BMW Cooling System Parts & Accessories for BMW 5 Series E39 (1996-2003)

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The cooling system is arguably the weakest point in numerous BMWs. If you drive an aging BMW or plan on taking your car to the track like we do, we recommend beefing up your cooling system before going to the track. Generally, the main components in your cooling system that are prone to failure include the following: expansion tank, factory hoses, water pump, thermostat, fan (especially if your vehicle comes factory with a clutch fan), and radiator. Factory BMW expansion tanks are plastic and prone to either breaking off at connection points or combusting. As factory rubber hoses age they either crack or break over time - we offer silicone cooling hose upgrades for most applications to avoid future failures. If you have an older vehicle, your water pump likely comes from the factory with a plastic impeller - we offer upgraded water pumps with metal impellers that are far more reliable. Newer model BMWs utilize electric water pumps - BMW spent millions of dollars engineering these water pumps, but they fail so often that we recommend replacing at 60,000 mile service intervals to avoid being stranded on the side of the road. In terms of thermostats, we offer various upgraded thermostats for racing applications. If your BMW utilizes a clutch fan from the factory, we have several options available in terms of universal electric fans - we recommend replacing these to avoid sending brittle plastic fan blades through your hood. For radiators, we recommend swapping out your radiator for one that does not use plastic connection points like your factory radiator.

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Turner Motorsport HD Aluminum Coolant Expansion Tank Kit - M50/M52/S5...
For vehicles produced before 09/1998
10X Entries Into Our F80 M3 Sweepstakes
Turner Motorsport - Corporate Logo
T#:9998526
Part#: 008348LA01BKT
Ships on Oct 13, 2026
Sale - Save 20% $ 423.99

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06-14-2026

$ 339.19 USD
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$ 339.19 USD
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Our Turner Motorsport's full aluminum expansion tank was designed and engineered in house to help with the weak point in your E36 cooling system. The coolant expansion tank goes through heat cycles over and over again from regular driving, it is important that your expansion tank is doing its job to retain coolant to keep your engine operating temperatures down and keep your engine bay clean. Not only is this a major upgrade but also a great maintenance item to replace. Our expansion tank was designed to fit the OEM hoses for an easy install and comes with all the upgraded items you will need for a clean install,

If your E36 needs a new expansion tank, make sure this is the last expansion tank you ever need to buy. Our coolant expansion tank has a full aluminum construction and wrinkle black powder coat for durability. Expansion tank kit comes with all the accessories you need to replace your expansion tank once, and never have to worry about it again.

Aluminum Coolant Expansion Tank Features:

- Maintains stock coolant capacity and expansion volume

- Designed to maintain OE coolant elevation, preventing air pockets

- Baffled tank ensures that air pockets cannot be introduced during aggressive driving and provides accurate coolant level reading

- Carefully designed bleed passage prevents the introduction of air as the engine cools

- Turner engraved internal fill level

- TIG welded 5052 aluminum construction

- All bungs are machined to fit factory hose ends

Kit contents:

Turner Aluminum Expansion Tank
Coolant level sensor
Expansion tank cap
Heavy duty bleeder screw
Flared coolant pressure release line
Hardware for installation

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Thermostat Replacement Kit - E39 M5
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:554086
Part#: 11537835558KT7
Ships in 4 Business Days
$ 170.99

This product was last offered at the strikethrough price on
04-21-2026

$ 158.99 USD
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$ 158.99 USD
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When it comes time to replace your thermostat, be sure you have everything you need. This kit includes everything you need to replace your thermostat, including the thermostat.

Kit includes:

  • Behr thermostat with gasket
  • Thermostat mounting hardware
  • 1 Gal Genuine BMW coolant

 

This thermostat fits the following BMWs: 
1998-2004 E39 BMW M5 

 

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Basic Cooling System Service Kit - E39 540i (09/1998+)
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:557233
Part#: E39540BCKT2
Ships in 7 Business Days
Sale - Save 13% $ 389.99

This product was last offered at the strikethrough price on
05-03-2026

$ 340.78 USD
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Sale - Save 13%
$ 389.99

This product was last offered at the strikethrough price on
05-03-2026

$ 340.78 USD
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Just like the rest of your vehicle's major systems, the cooling system must also be addressed periodically to ensure proper cooling and component reliability. Plastic and rubber components become brittle and prone to splitting or cracking after long periods of heating and cooling cycles, especially in colder climates! The coolant itself can degrade or become contaminated, leading to potential corrosion or freezing issues. Finally, thermostats and sensors can fail completely, preventing proper cooling and/or coolant temperature readings to become inaccurate.

To make sure you are not left stranded on the side of the road with an overheated engine, we have put together this Basic Cooling System Service kit. This kit contains all of the most-likely-to-fail components, giving you peace of mind knowing your engine will continue to run cool for another 60,000+ miles.

See kit contents below for all included components.

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Packaged by Turner - Corporate Logo
T#:557232
Part#: E39M5XBCKT
Ships in 1-2 days
Sale - Save 12% $ 352.99

This product was last offered at the strikethrough price on
05-03-2026

$ 311.82 USD
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Sale - Save 12%
$ 352.99

This product was last offered at the strikethrough price on
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$ 311.82 USD
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Just like the rest of your vehicle's major systems, the cooling system must also be addressed periodically to ensure proper cooling and component reliability. Plastic and rubber components become brittle and prone to splitting or cracking after long periods of heating and cooling cycles, especially in colder climates! The coolant itself can degrade or become contaminated, leading to potential corrosion or freezing issues. Finally, thermostats and sensors can fail completely, preventing proper cooling and/or coolant temperature readings to become inaccurate.

To make sure you are not left stranded on the side of the road with an overheated engine, we have put together this Basic Cooling System Service kit. This kit contains all of the most-likely-to-fail components, giving you peace of mind knowing your engine will continue to run cool for another 60,000+ miles.

See kit contents below for all included components.

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Packaged by Turner - Corporate Logo
T#:557221
Part#: E39528BCKT
Ships in 5 Business Days
Sale - Save 14% $ 259.99

This product was last offered at the strikethrough price on
05-03-2026

$ 222.61 USD
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Sale - Save 14%
$ 259.99

This product was last offered at the strikethrough price on
05-03-2026

$ 222.61 USD
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Just like the rest of your vehicle's major systems, the cooling system must also be addressed periodically to ensure proper cooling and component reliability. Plastic and rubber components become brittle and prone to splitting or cracking after long periods of heating and cooling cycles, especially in colder climates! The coolant itself can degrade or become contaminated, leading to potential corrosion or freezing issues. Finally, thermostats and sensors can fail completely, preventing proper cooling and/or coolant temperature readings to become inaccurate.

To make sure you are not left stranded on the side of the road with an overheated engine, we have put together this Basic Cooling System Service kit. This kit contains all of the most-likely-to-fail components, giving you peace of mind knowing your engine will continue to run cool for another 60,000+ miles.

See kit contents below for all included components.

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Packaged by Turner - Corporate Logo
T#:338705
Part#: TMS16592
Ships in 3 Business Days
Sale - Save 5% $ 171.99

This product was last offered at the strikethrough price on
08-13-2026

Starting at $ 163.48 USD
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Starting at $ 163.48 USD
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The oil cooler/heat exchanger for the automatic transmission is one of the most overlooked sections of the 540i and 740i cooling system. The cooler (heat exchanger) is a part of the overall cooling system and uses coolant circulated from the regular cooling system to cool the transmission oil running through this small cooling block. Some of the hoses are shared with the rest of the cooling system as well. The E38/E39 heat exchanger is located along the driver's side frame rail and is accessed from the wheel well. We recommend servicing or cleaning the heat exchanger along with any cooling system overhaul. Or if you're having transmission faults (especially for temperature) you may want to clean the transmission cooler anyway and these hoses will be a nice finishing touch.

Replacing or cleaning the heat exchanger components could lead to better shifting of the automatic as the cooler itself can become clogged. If you're experiencing harder or hesitating shifts, and the internal transmission temperature is rising without being regulated, the components in this system are the likely cause. Staying on top of the cooling needs of the transmission will help prevent a very costly transmission repair in the future. These hoses are easily replaced and you can clean the heat exchanger easily with brake cleaner and some brushes.

Included in this handy package are:
  • 11531711381 - transmission cooling hose from water pump to radiator (with t-connector)
  • 11531711385 - transmission cooling hose from radiator to cooler
  • 11531711384 - transmission cooling hose from cooler to water pump
  • 11537511207 - transmission cooling hose from cooler to chassis
  • hose clamp
  • o-ring


    This hose set fits the following BMWs:
    1999-2003 E39 BMW 540i
    1999-2001 E38 BMW 740i 740il
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    Coolant Expansion Tank - E36/E39/Z3 6 cylinder 1992-1998
    10X Entries Into Our F80 M3 Sweepstakes
    Packaged by Turner - Corporate Logo
    T#:338018
    Part#: 17111723520
    Ships in 1 Business Day
    $ 99.99

    This product was last offered at the strikethrough price on
    09-15-2026

    Starting at $ 63.18 USD
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    Starting at $ 63.18 USD
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    This high quality BEHR brand expansion tank is used on M50, M52, S50 and S52 engines, and is a common failure item on all E36 3 series with 6 cylinder engines (325/328/323 and M3) 1992-1999, Z3 with 2.8 liter, MZ3 Roadster/Coupe (S52), and E39 528i from 1997-1998. BEHR was the original equipment supplier to BMW, so you know the BEHR made expansion tank will be the highest quality available. Be leary of competitors selling this part for less -- is it a BEHR? Probably not. We only carry the BEHR brand expansion tank as it is the only one we use in our own BMWs.

    If you are overhauling your coolant system, now is the time to consider preventative replacing this expansion tank. These are known to go bad, causing a leak which can leave you stranded. We have found that the expansion tanks should be replaced based on age as well as condition. Expansion tanks seem to have a lifespan of less than six years before they show signs of fatigue and wear. Pre-emptively replacing the expansion tank as part of an overall maintenance plan can prevent you from getting stranded from a sudden failure later on.

    Need a new coolant level sensor too? If your coolant level sender is bad, your on board computer will constantly display a "low coolant" message (unless your coolant is actually low...). If you're replacing your expansion tank, now is a great time to replace this failure prone sensor. If you want a new coolant level sensor, simply choose from the option below. Because there are different sensors for different year/model BMWs, please be as specific as possible when you give us your car info during checkout (model, year, production date). Thanks!


    This item fits the following BMWs:
    1992-1998 E36 BMW 323ic 325i 325is 325ic 328i 328is 328ic M3
    1997-1998 E39 BMW 528i
    1997-1998 Z3 BMW Z3 2.8
    1998-2000 Z3 BMW M Roadster M Coupe (S52)
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    Packaged by Turner - Corporate Logo
    T#:338714
    Part#: TMS14418
    Ships in 4 Business Days
    $ 1,201.99

    This product was last offered at the strikethrough price on
    06-05-2026

    Starting at $ 1,160.44 USD
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    Starting at $ 1,160.44 USD
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    This is a compete cooling system overhaul kit, which includes all the common cooling system failure parts bundled into a complete package. This cooling system package is for the 1999-2003 E39 M5 with the S62 engine.

    A failure in the cooling system can lead to overheating and catastrophic engine failure. Don't gamble your engine! By replacing these core items preventatively, such as the thermostat housing, radiator, and waterpump, you are defusing what could be a ticking cooling system time bomb. And if you've had a failure of one of these parts, now is the time to refresh your entire cooling system. Keep on top of the cooling needs of your engine for your own piece of mind. Potential buyers also see the upside of a properly maintained car with receipts. Our bundled package includes the following:
  • OEM Behr radiator
  • OEM Laso or OE BMW water pump with gasket
  • OE BMW coolant temp sensor (located in the water pump housing)
  • OEM Behr thermostat with o-ring
  • OE BMW o-rings for the inner coolant tubes
  • OE BMW expansion tank cap
  • OE BMW upper and lower radiator hoses with OE-style clamps
  • OE BMW expansion tank hose with OE-style clamps
    Optional items (which can be added below):
    - OE BMW antifreeze
    - Add a new coolant level sensor (known for failing / throwing "check coolant" messages)
    - Add a new plastic expansion tank (if it's never been changed it's a risk of a crack or leak)
    - Add a new fan clutch

    Buy as a package and save $$$!

    This cooling system overhaul kit fits the following BMWs:
    1999-2003 E39 BMW M5
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    Water Pump - E39 540i E38 740i/il E53 X5 4.4i 4.6is
    10X Entries Into Our F80 M3 Sweepstakes
    Packaged by Turner - Corporate Logo
    T#:348558
    Part#: 11510393336DK
    Ships in 3 Business Days
    $ 192.99

    This product was last offered at the strikethrough price on
    07-15-2026

    Starting at $ 182.98 USD
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    Starting at $ 182.98 USD
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    Don't take your car's cooling system for granted!One of the biggest weak points is the cooling system. Replacing your water pump will go a long way for keeping your car on the road and operating properly. This water pump fits BMW 1999-2001 E38 740i/740iL, 1999-2003 E39 540i, 1999-2003 E53 X5 4.4i and 4.6is with M62TU 4.4L (4.6L for the 4.6is) engine.

    Choose from a water pump with a metal or composite impeller.
    This water pump comes complete with housing profile gasket and o-rings.

    This item fits the following BMWs:
    1999-2003  E39 BMW  540i 540i touring
    1999-2001  E38 BMW  740i 740il
    2000-2003  E53 BMW  X5 4.4i X5 4.6is
    2000-2003  E52 BMW  Z8 Alpina
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    Packaged by Turner - Corporate Logo
    T#:554073
    Part#: 11537509227KT3
    Back Ordered
    $ 114.99

    This product was last offered at the strikethrough price on
    09-16-2026

    $ 103.99 USD
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    $ 103.99 USD
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    When it comes time to replace your thermostat, be sure you have everything you need. This kit includes everything you need to replace your thermostat, including the thermostat.

    Kit includes:

    • Mahle-Behr thermostat with gasket
    • Thermostat mounting hardware
    • 1 liter of coolant

    Applications:
    1999-2003 E39 528i, 525i, 530i sedan, touring wagon (M52TU engine, M54 engine)
    1999-2005 E46 323, 328, 325, 330 sedan, coupe, cabrio, touring wagon (M52TU engine, M54 engine)
    2004-2005 E60 525i, 530i sedan, touring wagon (M54 engine)
    2001-2006 E53 X5 3.0 (M54 engine)
    2004-2006 E83 X3 2.5i X3 3.0i (M54 engine)
    1999-2002 Z3 2.3. Z3 2.5i, 2.8 Z3 3.0i (M54 engine)
    2003-2005 Z4 2.5i, Z4 3.0 (M54 engine)

     

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    Packaged by Turner - Corporate Logo
    T#:557230
    Part#: E39540BCKT
    Ships in 2 Business Days
    Sale - Save 11% $ 449.99

    This product was last offered at the strikethrough price on
    04-21-2026

    $ 398.70 USD
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    Sale - Save 11%
    $ 449.99

    This product was last offered at the strikethrough price on
    04-21-2026

    $ 398.70 USD
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    Just like the rest of your vehicle's major systems, the cooling system must also be addressed periodically to ensure proper cooling and component reliability. Plastic and rubber components become brittle and prone to splitting or cracking after long periods of heating and cooling cycles, especially in colder climates! The coolant itself can degrade or become contaminated, leading to potential corrosion or freezing issues. Finally, thermostats and sensors can fail completely, preventing proper cooling and/or coolant temperature readings to become inaccurate.

    To make sure you are not left stranded on the side of the road with an overheated engine, we have put together this Basic Cooling System Service kit. This kit contains all of the most-likely-to-fail components, giving you peace of mind knowing your engine will continue to run cool for another 60,000+ miles.

    See kit contents below for all included components.

    Show More Show Less
    Packaged by Turner - Corporate Logo
    T#:338700
    Part#: TMS14414
    Ships in 1-2 days
    $ 598.99

    This product was last offered at the strikethrough price on
    09-16-2026

    Starting at $ 587.60 USD
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    Starting at $ 587.60 USD
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    This is a compete cooling system overhaul kit, which includes all the common M52 cooling system failure parts bundled into a complete package. This cooling system package is for the 1997-1998 528i with the M52 engine with either the manual or automatic transmission.

    Much of the E39 cooling system is shared with the 3-series cars of the same era. Which means the potential for serious cooling system and engine-related failures. Several of the primary cooling components are prone to failure within 60k miles (or less in many cases). A failure in the cooling system can lead to overheating and catastrophic engine failure. Don't gamble your engine! By replacing these core items preventatively, such as the radiator & waterpump, you are defusing what could be a ticking cooling system time bomb. And if you've had a failure of one of these parts, now is the time to refresh your cooling system. Our kit includes one OEM Behr radiator, an Original BMW water pump (with updated composite impeller), thermostat, radiator cap, and new radiator hoses.

    Basic Kit Contents:
    17111702969, radiator (OEM Behr)
    11517527799, water pump (OE BMW)
    11537511580, 88�C thermostat (OEM Behr/Hella)
    11531740832, upper radiator hose (OEM Rein/CRP)
    11531740481, lower radiator hose (OEM Rein/CRP)
    17111427156, expansion tank hose (OEM Rein/CRP)
    17111742231, expansion tank cap (OEM Behr/Hella)

    Cooling Kit Options:
    E39 Water Pump Options
    (click to expand)
    OE BMW with composite impeller. The original BMW water pumps had plastic impellers which degraded and failed. The latest design uses composites that are much better and will not corrode. Compared to a metal impeller, the composite is lighter so it's more efficient and it will not wear out the bearings. We don't even offer the metal impeller pumps with this kit because the BMW composite one is so much better.
    Stewart high performance. The ultimate in M50 water pumps! It features a stainless steel impeller, heavy-duty bearings, a better o-ring seal, and flows 20% more than the stock pump. If indestructible is what you're looking for, this is the pump to go with. It also comes with a lifetime warranty for piece of mind.
    E39 Expansion Tank
    (click to expand)
    The original expansion tank is prone to cracks and leakage. Again - it's made from a weak plastic. The material has improved over the years but the only option remains an OEM plastic tank. It's a good idea to replace it if you're doing a whole overhaul. Don't re-use the original tank if you're going to the trouble of replacing everything else!
    E39 Thermostat Housing
    (click to expand)
    The original BMW plastic thermostat housing is brittle and does not seal well. We only sell it under protest. Instead we've been selling this aluminum housing for the last 20+ years. The aluminum does not have the same shortcomings as the plastic one. We made this item an option in case you already have the aluminum housing.

    Use the options below to build your cooling package.

    This cooling system overhaul kit fits the following BMWs:
    1997-1998 E39 BMW 528i
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    Thermostat Replacement Kit - E39 540i 1996-1998
    10X Entries Into Our F80 M3 Sweepstakes
    Packaged by Turner - Corporate Logo
    T#:554083
    Part#: 11531437526KT2
    Ships in 2 Business Days
    Sale - Save 2% $ 189.99

    This product was last offered at the strikethrough price on
    05-29-2026

    $ 186.20 USD
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    Sale - Save 2%
    $ 189.99

    This product was last offered at the strikethrough price on
    05-29-2026

    $ 186.20 USD
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    When it comes time to replace your thermostat, be sure you have everything you need. This kit includes everything you need to replace your thermostat, including the thermostat.

    Kit includes:

    • Behr thermostat with O-ring
    • Thermostat mounting hardware
    • 1 Gallon BMW coolant

     

    This item fits the following BMWs: 

    1997-1998  E39 BMW  540i

     

     

    When it comes time to replace your thermostat, be sure you have everything you need. This kit includes everything you need to replace your thermostat, including the thermostat.

    Kit includes:

    • Behr thermostat with O-ring
    • Thermostat mounting hardware
    • 1 Gallon BMW coolant
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    Thermostat Replacement Kit - E39 540i 1999-2003
    10X Entries Into Our F80 M3 Sweepstakes
    Packaged by Turner - Corporate Logo
    T#:554085
    Part#: 11531436386KT3
    In Stock
    Sale - Save 24% $ 119.99

    This product was last offered at the strikethrough price on
    05-03-2026

    $ 91.11 USD
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    Sale - Save 24%
    $ 119.99

    This product was last offered at the strikethrough price on
    05-03-2026

    $ 91.11 USD
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    When it comes time to replace your thermostat, be sure you have everything you need. This kit includes everything you need to replace your thermostat, including the thermostat.

    Kit includes:

    • Rein thermostat
    • Thermostat mounting hardware
    • 1 liter of coolant

     

    This item fits the following BMWs: 
    1999-2003  E39 BMW  540i 
     

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    Packaged by Turner - Corporate Logo
    T#:338706
    Part#: TMS14416
    Back Ordered
    Sale - Save 4% $ 660.99

    This product was last offered at the strikethrough price on
    06-13-2026

    Starting at $ 634.13 USD
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    Sale - Save 4%
    $ 660.99

    This product was last offered at the strikethrough price on
    06-13-2026

    Starting at $ 634.13 USD
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    This is a compete cooling system overhaul kit, which includes all the common cooling system failure parts bundled into a complete package. This cooling system package is for the 1997-1998 540i with the M62 4.4-liter engine (non-VAN0S). This package applies to cars equipped with either the manual or automatic transmission (select the appropriate parts in the menu below).

    A failure in the cooling system can lead to overheating and catastrophic engine failure. Don't gamble your engine! By replacing these core items preventatively, such as the thermostat housing, radiator, and waterpump, you are defusing what could be a ticking cooling system time bomb. And if you've had a failure of one of these parts, now is the time to refresh your entire cooling system.

    Basic Kit Contents:
    1711702969, radiator (OEM Behr)
    11510393340, water pump (OEM)
    13621703993, coolant temp sensor (located in the water pump housing)
    11531437526, thermostat with housing and sensor (OEM Behr/Hella)
    11531745595, upper radiator hose (OEM)
    11531741409, lower radiator hose (OEM)
    11531741404, expansion tank hose (OEM)
    17111741167, expansion tank (OEM Behr)
    17111742231, expansion tank cap (OEM Behr)

    Cooling Kit Options:
    540 Water Pump Options
    (click to expand)
    There are three versions of the water pump for the early 1997-1998 540i: OEM plastic impeller, updated metal impeller, and the more recently updated composite impeller. We recommend either the metal or composite impeller. These are what we use the most in our shop and what our technicians are comfortable with. On more recent models, BMW has used the composite impeller as original. There doesn't seem to be evidence of the plastic failing on this design (it did on the E36 3-series) but we feel most comfortable with the other options. Both the metal and composite manufacturers are OEM for BMW.

    Use the options below to build your cooling package.

    Buy as a package and save $$$!

    This cooling system overhaul kit fits the following BMWs:
    1997-1998 E39 BMW 540i
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    Packaged by Turner - Corporate Logo
    T#:338701
    Part#: TMS14415
    Back Ordered
    $ 708.99

    This product was last offered at the strikethrough price on
    07-15-2026

    Starting at $ 688.50 USD
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    Starting at $ 688.50 USD
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    This is a compete cooling system overhaul kit, which includes all the common cooling system failure parts bundled into a complete package. This cooling system package is for the 1999-2000 528i with the M52TU engine and the 2001-2003 525i and 530i with the M54 engine. This package applies to cars equipped with either the manual or automatic transmission.

    Much of the later E39 cooling system is strong and reliable and doesn't suffer the same types of problems associated with earlier E39 and E36 systems. But there is still the potential for serious cooling system and engine-related failures. Several of the primary cooling components are prone to failure within 80k miles (or less in many cases). A failure in the cooling system can lead to overheating and catastrophic engine failure. Don't gamble your engine! By replacing these core items preventatively, such as the thermostat housing, radiator, and waterpump, you are defusing what could be a ticking cooling system time bomb. And if you've had a failure of one of these parts, now is the time to refresh your entire cooling system. Our kit includes an OEM Behr radiator, an Original BMW water pump (with updated composite impeller), thermostat with housing, radiator cap, and new radiator hoses.

    Optional items (which can be added below):
    - Original BMW antifreeze
    - Upgrade the water pump to a Stewart EMP High Performance pump
    - Add a new coolant expansion tank (known for cracking)
    - Add a new coolant level sensor (known for failing / throwing "check coolant" messages)
    - Add a new coolant temp sensor (located in lower radiator hose and the seal ring may cause leaks if re-used)

    This cooling system overhaul kit fits the following BMWs:
    1999-2003 E39 BMW 525i 528i 530i
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    Stewart Components - Corporate Logo
    T#:3780
    Part#: 888010330
    Ships in 2 Business Days
    $ 219.99

    This product was last offered at the strikethrough price on
    06-15-2026

    $ 204.99 USD
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    $ 204.99 USD
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    This high performance water pump is a direct replacement pump designed to fit a wide range of BMW engines with no modifications. That includes accepting the Factory Fan Clutch. The front of the BMW High Performance Water Pump is stock appearing giving it that classic BMW look while the back is all business. Features up to 20% increase of water flow over stock pump, and it TWICE as efficient as factory pump, much less parasitic drag than other pumps, stainless steel impeller, heavy duty bearing, high quality water seal. Manufactured by EMP / Stewart Components. THIS PUMP COMES WITH A LIMITED LIFETIME WARRANTY

    Fits all US Spec M50/52/54 and S50/52 6 cylinder engines including:
    E36 chassis 1992-1999 325,328, 323 and M3
    E46 chassis 1999-2005 323,325,328 &330
    E34 chassis 1991-1995 525i
    E39 chassis 1997-2003 525i, 528i & 530i
    E53 X5 SAV 1999-2003 6 cylinder models
    Z3 2.8 and 3.0 6 cylinder engines.
    Z4 (Not M) including Z4 2.5 & 3.0
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    E36/E46/Z3/Z4 ECS Tuning Aluminum Water Pump Pulley - Black
    Standard replacement for vehicles with production date from 09/1998. Provides a bolt-on...
    10X Entries Into Our F80 M3 Sweepstakes
    ECS - Corporate Logo
    T#:363707
    Part#: 001977ECS03A
    In Stock
    Sale - Save 5% $ 104.99

    This product was last offered at the strikethrough price on
    06-13-2026

    $ 99.74 USD
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    Sale - Save 5%
    $ 104.99

    This product was last offered at the strikethrough price on
    06-13-2026

    $ 99.74 USD
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    Most of the pulleys on your BMW engine are plastic, which become brittle and frail over time and from engine bay heat. A failed pulley could leave you stranded which is why it is vital to inspect the pulleys during routine maintenance. This is an aluminum version of the stock water pump pulley used on the M50/M52/M52TU/M54 engine in the E36, E46, Z3, Z4, and other models. It uses the same hardware and the original belt as the stock plastic pulley. But the aluminum will last much longer.
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    Coolant Vacuum Purge & Refill Tool Set
    10X Entries Into Our F80 M3 Sweepstakes
    Schwaben - Corporate Logo
    T#:402498
    Part#: 024948SCH01A
    In Stock
    Sale - Save 22% $ 115.99

    This product was last offered at the strikethrough price on
    05-03-2026

    $ 89.99 USD
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    Sale - Save 22%
    $ 115.99

    This product was last offered at the strikethrough price on
    05-03-2026

    $ 89.99 USD
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    The Schwaben Coolant Vacuum Fill Tool ensures no air pockets get into your cooling system while you're replacing your coolant - intended for use to refill your cooling system, not for removal. Can be used with Schwaben fluid extractors or with shop air - standard air compressor with a minimum rating of 90 PSI (6.2 bar). Includes all fittings and adapters necessary for use, with a molded storage case to keep your Schwaben Vacuum Fill Tool pristine for future use.
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    Mishimoto - Corporate Logo
    T#:363510
    Part#: MMFANCNTLUPROBE
    In Stock
    9% off MSRP $ 98.00

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 88.99 USD
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    9% off MSRP
    $ 98.00

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 88.99 USD
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    Take Control of Your Engine Cooling Fan with Mishimoto's Manual Fan Controller Kit

    Ensure your engine runs at the perfect temperature by using this versatile manual fan controller system, compatible with all 12v fan-equipped vehicles. With adjustable activation temperature settings ranging from 150°F to 240°F, you have precise control over your engine's cooling fan. The kit includes a probe-style temperature sensor and a generous 7 feet of wire, making it suitable for installation in vehicles of various sizes.

    For added convenience, the system is equipped with a built-in A/C override feature, ensuring your cooling system works seamlessly. It's designed to work with one or two electric fans drawing a combined 25 amps or less. The package includes all the essential wiring connectors and hardware needed for a trouble-free installation.

    With a lifetime warranty from Mishimoto, you can trust in the quality and durability of this manual fan controller kit.

    WARNING! Prop 65 may apply to this product. Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968) is a California law that applies to all companies selling products in California.

    Prop 65 requires any listed chemical present above very low levels that are known to cause cancer, birth defects, or other reproductive harm. For more information about California Prop 65 warnings, visit www.P65Warnings.ca.gov.

    WARNING! Prog 65 may apply to this product.Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968) is a California law that applies to call companies selling products in California. Prop 65 requires any listed chemical present above very low levels that are known to cause cancer, birth defects, or other reproductive harm.For more information about California Prop 65 warning see: www.P65Warnings.ca.gov.
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    Thermostat With Housing - 90C
    For vehicles with a production date from 09/1998
    10X Entries Into Our F80 M3 Sweepstakes
    Bremmen Parts - Corporate Logo
    T#:598978
    Part#: 11531436386
    In Stock
    Sale - Save 20% $ 93.99

    This product was last offered at the strikethrough price on
    05-03-2026

    $ 75.06 USD
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    Sale - Save 20%
    $ 93.99

    This product was last offered at the strikethrough price on
    05-03-2026

    $ 75.06 USD
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    A thermostat that opens sooner promotes better cooling in your vehicle. Running a lower temperature thermostat will keep everything much cooler. Keeping the engine cooler will help reduce and improve the life of the seals in your engine, saving you time and money, while also help increase engine performance. A tune might be required to gain the most from this modification, as well as to get your car's ECU accustomed to seeing lower temperatures.
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    URO Radiator Fan Clutch
    2X Entries Into Our F80 M3 Sweepstakes
    URO - Corporate Logo
    T#:362006
    Part#: 11527505302
    In Stock
    $ 72.99 USD
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    $ 72.99 USD
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    Common source of engine overheating
    Mishimoto - Corporate Logo
    T#:363170
    Part#: MMFAN16
    In Stock
    $ 115.99 USD
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    $ 115.99 USD
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    Genuine BMW - Corporate Logo
    T#:360688
    Part#: 11537502525
    In Stock
    $ 90.99 USD
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    $ 90.99 USD
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    Replace your cracked/broken coolant pipe with this Genuine BMW pipe to ensure long term reliability and perfect fitment.


    Spal - Corporate Logo
    T#:598892
    Part#: 185FH
    Back Ordered
    11% off MSRP $ 193.99

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 171.99 USD
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    11% off MSRP
    $ 193.99

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 171.99 USD
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    SPAL® electric fan wiring harness kits are a must-have when installing electric fans. Designed to safely integrate with OEM wiring, the SPAL kits feature a waterproof relay along with printed wires which aid in installation. The wiring kits also feature stainless steel switches with optional switched override capability, fuse holder, and wiring connectors. Features: Makes installation of your new fan a breeze Designed to safely integrate with OEM wiring Feature a waterproof 10/40 amp relay with printed wires for easy installation Kit features a 3/8” NPT thermos-switch and a 3/8” to ½” NPT adapter Harness is designed for 12V systems only
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    Spal - Corporate Logo
    T#:583648
    Part#: 30100400
    In Stock
    $ 111.99 USD
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    $ 111.99 USD
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    Low profile design makes an easy fit when clearance is an issue. 1300 CFM.
    Genuine BMW - Corporate Logo
    T#:14567
    Part#: 11531406766
    Ships in 3 Business Days
    $ 70.99 USD
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    $ 70.99 USD
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    Replacement upper radiator hose for the E39 M5. This is a Genuine BMW part.

    This item fits the following BMWs:
    1999-2003 E39 BMW M5

    Mahle-Behr - Corporate Logo
    T#:340539
    Part#: 11527505302
    Ships in 2 Business Days
    $ 238.99

    This product was last offered at the strikethrough price on
    08-26-2026

    $ 230.99 USD
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    $ 230.99 USD
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    This clutch engages the belt-driven engine fan when the engine is warm/hot, and dis-engages the fan when cold/cool. These commonly fail, causing the engine fan to not spin fast enough (or at all) when your car is stopped in traffic, causing engine to overheat.

    This fan clutch fits many 6 cylinder BMWs, including the following::

    1992-1998  E36 BMW  323is 323ic 325i 325is 325ic 328i 328is 328ic M3
    1999-2005  E46 BMW  323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi - Automatic Transmission
    1991-1995  E34 BMW  525i 535i M5
    1997-2003  E39 BMW  525i 528i 530i
    1988-1994  E32 BMW  735i 735il
    1997-2002  Z3 BMW  Z3 1.9 Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i
    1998-2000  Z3 BMW  M Roadster M Coupe (s52)
    2000-2006  E53 BMW  X5 3.0i
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    Bav Auto Tools - Corporate Logo
    T#:580397
    Part#: B8800084
    In Stock
    Sale - Save 15% $ 146.99

    This product was last offered at the strikethrough price on
    05-03-2026

    $ 124.94 USD
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    Sale - Save 15%
    $ 146.99

    This product was last offered at the strikethrough price on
    05-03-2026

    $ 124.94 USD
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    Genuine BMW - Corporate Logo
    T#:14568
    Part#: 11531407812
    Ships in 1 day
    $ 88.99 USD
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    $ 88.99 USD
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    Replacement lower radiator hose for E39 M5. A Genuine BMW part.

    This item fits the following BMWs:
    1999-2003 E39 BMW M5

    Laso - Corporate Logo
    T#:348907
    Part#: 11511407113
    Ships in 5 Business Days
    $ 509.99 USD
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    $ 509.99 USD
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    The water pump in your vehicle pumps coolant throughout the cooling system, keeping your engine temperature within operating range as well as pushing coolant through the heater core to provide heat to the occupants. When it begins to fail, overheating problems are inevitable. Don't take a chance on doing damage to engine internals by overlooking the service and replacement of your water pump.
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    CSF High Performance Aluminum Radiator - E39 540i M5 - Manual Transmi...
    For vehicles with manual transmission and production date from 09/1998
    2X Entries Into Our F80 M3 Sweepstakes
    CSF - Corporate Logo
    T#:401086
    Part#: 7064
    In Stock
    $ 689.00 USD
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    $ 689.00 USD
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    CSF is one of the premier cooling product specialists available on the market thanks to designs such as their High Performance Aluminum Radiators. Using a single pass designed core, this radiator gives you all the cooling you could ever need. Paired with these radiators are CNC machined brackets and corrosion resistant hardware that allow final installation to have a same as stock fitment! This enables you to have much higher cooling without having to cut away any metal or delete any important components just for the sake of lower coolant temperatures. 

    Features:

    • Two-row, triple-pass design radiator core
    • CNC machined mounting brackets
    • All needed hardware included
    • Hand polished aluminum with a mirror-like finish
    • Stock fitment prevents modification to engine bay

    Fits the following BMWs:
    09/1998+ E39 BMW 540i, M5 with a manual transmission

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    Genuine BMW - Corporate Logo
    T#:360689
    Part#: 11537509227
    Ships in 1-2 days
    3% off MSRP $ 174.45

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 169.69 USD
    Free Shipping
    3% off MSRP
    $ 174.45

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 169.69 USD
    Free Shipping

    Redline - Corporate Logo
    T#:640437
    Part#: 81205
    In Stock
    $ 68.99 USD
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    $ 68.99 USD
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    Red Line SuperCool Concentrate fortified with WaterWetter is a concentrated antifreeze/coolant designed to maximize the performance of your cooling system with superior protection against cavitation corrosion/erosion. Using SuperCool Concentrate diluted with distilled water protects the entire cooling system keeping new components like new for 5 years/150,000 miles and prevents further damage to older components. Red Line’s proprietary coolant additive formula enhances the fluid’s ability to transfer heat, reducing operating temperatures by up to 20*F and prolonging the life of the entire cooling system. Red Line's SuperCool is an OAT coolant that is a Nitrate and Silicate Free product with its own proprietary corrosion technology to offer superior protection for aluminum engines found in all European vehicles, performance vehicles, as well as other applications. SuperCool will not void the factory warranty either. It can be used to top off the existing coolant of any BMW and will not cause any ill-effects on the cooling system because it is silicate and nitrate free. It is still better to flush it out and switch completely to SuperCool to get all the full benefits of the product in performance and protection.
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    Mishimoto - Corporate Logo
    T#:8933504
    Part#: MMOCULBK
    In Stock
    $ 536.99 USD
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    $ 536.99 USD
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    Ensure your BMW's engine performs at its peak with the installation of this highly efficient oil cooler from Mishimoto. Even in ideal driving conditions, elevated oil temperatures can lead to decreased pressure and compromised engine lubrication. This comprehensive kit includes four feet of stainless braided line, adapter fittings, and an oil filter sandwich adapter, all meticulously designed to reduce oil temperatures and uphold optimal driving circumstances.

    • Rows: 19
    • Overall Dimensions: 13" x 5.5" x 2"
    • Core Dimensions: 11.25" x 5.5" x 2"
    • Braided Hoses: 4ft .75 inch & 4ft 9 inch
    • Braided Hose Fittings: -10AN
    • Sandwich Plate Fittings: -10AN

    Please take into consideration that this product may be subject to Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968). Proposition 65 is a California law that applies to companies selling products in California and necessitates the disclosure of chemicals known to cause cancer, birth defects, or other reproductive harm when present at levels exceeding specified thresholds. For further information regarding California Prop 65 warnings, visit www.P65Warnings.ca.gov.

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    Genuine BMW - Corporate Logo
    T#:1030
    Part#: 11517509985
    In Stock
    11% off MSRP $ 192.54

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 172.26 USD
    Free Shipping
    11% off MSRP
    $ 192.54

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 172.26 USD
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    This Original BMW water pump is the latest updated design with a composite impeller. The composite material (similar to Kevlar) is much stronger than the problematic plastic impeller from past water pumps. And it's lighter than the aftermarket metal impellers so that means less strain on the bearing. For an OE/OEM replacement, we have found that this is the highest quality and longest lasting waterpump available.

    When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

    This waterpump fits the following BMWs:
    1999-2006 E46 3 series - 323i, 323Ci, 328i, 328Ci, 325i, 325Ci, 330i, 330Ci
    1999-2003 E39 5 series - 528i, 525i, 530i
    1999-2002 Z3 Roadster/Coupe - Z3 2.8, Z3 2.5, Z3 3.0
    2004-2006+ X3 SAV - X3 2.5 & 3.0
    2000-2006 X5 SAV - X5 3.0
    2003-2005 Z4 Roadster/Coupe - Z4 2.5 & Z4 3.0
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    Mishimoto - Corporate Logo
    T#:637390
    Part#: MMFAN-16C
    In Stock
    $ 117.99 USD
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    $ 117.99 USD
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    This curved blade fan can be used as an upgrade to the OEM fan for more efficient cooling or fitment issues with aftermarket products. With its slim design, the fan can easily be installed flush against a radiator. For universal installation, use Mishimoto universal fan mount kit, T#363171. Features: High-flow curved blade fan provides 1850 cfm of airflow Universal fitment Compact design with a diameter of 16" and an overall thickness of only 3.2" provides increased engine bay space Mishimoto Lifetime Warranty WARNING! Prop 65 may apply to this product. Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968) is a California law that applies to call companies selling products in California. Prop 65 requires any listed chemical present above very low levels that are known to cause cancer, birth defects, or other reproductive harm. For more information about California Prop 65 warning see: www.P65Warnings.ca.gov.
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    Mishimoto - Corporate Logo
    T#:640347
    Part#: MMTS-E46-99V2
    Ships in 4 Business Days
    $ 135.99 USD
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    $ 135.99 USD
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    Spal - Corporate Logo
    T#:376582
    Part#: 30102049
    Ships on Oct 14, 2026
    $ 207.99 USD
    Free Shipping
    $ 207.99 USD
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    For BMW owners seeking enhanced airflow or tighter engine compartment clearance, Turner Motorsport presents a Universal Fan. Ideal for applications like aftermarket turbo setups, this fan ensures optimal cooling performance. Please note that this fan is universal and may require modification to fit your specific application. Crafted in Italy, this fan boasts dimensions of 16.30in x 15.75in x 3.47in and provides an airflow of 2024 CFM.

    • Enhanced airflow for improved engine cooling
    • Ideal for applications with tight tolerances, such as aftermarket turbo setups
    • Universal design allows for versatile installation
    • Crafted in Italy for quality assurance
    • Compact size with powerful airflow capacity
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    Mahle-Behr - Corporate Logo
    T#:341098
    Part#: 11537509227
    Ships in 2 Business Days
    $ 104.39

    This product was last offered at the strikethrough price on
    08-14-2026

    $ 104.28 USD
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    $ 104.28 USD
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    Replacement stock MAP thermostat with plastic housing and gasket for E46, E39, E60, X5, Z4 - M54 engine, M52TU engine. Your car may still operate fine according the instrument display but the electrically-operated thermostat may be going bad. This new thermostat includes the thermostat gasket, ready to install in your BMW.

    Hailing from Stuttgart, Mahle-Behr specializes in automotive cooling systems. From air conditioning to engine cooling M-B has you covered with OE-quality replacement parts.

    Applications:
    1999-2003 E39 528i, 525i, 530i sedan, touring wagon (M52TU engine, M54 engine)
    1999-2005 E46 323, 328, 325, 330 sedan, coupe, cabrio, touring wagon (M52TU engine, M54 engine)
    2004-2005 E60 525i, 530i sedan, touring wagon (M54 engine)
    2001-2006 E53 X5 3.0 (M54 engine)
    2004-2006 E83 X3 2.5i X3 3.0i (M54 engine)
    1999-2002 Z3 2.3. Z3 2.5i, 2.8 Z3 3.0i (M54 engine)
    2003-2005 Z4 2.5i, Z4 3.0 (M54 engine)

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    Spal - Corporate Logo
    T#:598821
    Part#: 30101516
    Ships in 3 Business Days
    11% off MSRP $ 168.99

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 149.99 USD
    Free Shipping
    11% off MSRP
    $ 168.99

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 149.99 USD
    Free Shipping
    1469 CFM. High performance puller fan with straight blades. This is a universal fan for applications that require more air flow or for engine compartments that have tight tolerances such as an aftermarket turbo set up that needs more clearance. This fan is universal and you must make it fit your application. It is not a direct bolt on. Made in Italy. Size: 16.3in x 15.75in x 2.48in Airflow (CFM): 1469
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    Genuine BMW - Corporate Logo
    T#:7391
    Part#: 17101438457
    Ships in 1 day
    3% off MSRP $ 156.99

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 152.99 USD
    Free Shipping
    3% off MSRP
    $ 156.99

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 152.99 USD
    Free Shipping
    This Genuine BMW radiator fan shroud channels air through the radiator to provide maximum cooling. A cracked or damaged fan shroud will reduce the cooling efficiency.

    When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

    This item fits the following BMWs:
    1997-2003 E39 BMW 525i 528i 530i
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    CSF OE Style Radiator - E39 525/528/530/540
    For vehicles with production date from 09/1998 - Fits Auto or Manual Models For vehicles with production date from 09/1998 and a manual transmission Fits Auto or Manual Models
    2X Entries Into Our F80 M3 Sweepstakes
    CSF - Corporate Logo
    T#:638785
    Part#: 2919
    Ships in 3 Business Days
    $ 94.99 USD
    Free Shipping
    $ 94.99 USD
    Free Shipping
    CSF radiators are designed and built to High-Performance Standards & sold worldwide for over 50 years - over 30 Million Units Sold! CSF's radiators are carefully engineered and Wind Tunnel tested for Cooling Performance Validation. CSF has over 10,000 different models of radiators that they manufacture and supply for all the leading brands of vehicles on the road.
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    Genuine BMW - Corporate Logo
    T#:360663
    Part#: 11521712110
    In Stock
    3% off MSRP $ 104.99

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 101.99 USD
    Free Shipping
    3% off MSRP
    $ 104.99

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 101.99 USD
    Free Shipping

    CSF OE Style Radiator - E39 528i (up to 09/1998)
    For vehicles with production date up to 09/1998
    2X Entries Into Our F80 M3 Sweepstakes
    CSF - Corporate Logo
    T#:638786
    Part#: 2918
    In Stock
    $ 113.99 USD
    Free Shipping
    $ 113.99 USD
    Free Shipping
    CSF radiators are designed and built to High-Performance Standards & sold worldwide for over 50 years - over 30 Million Units Sold! CSF's radiators are carefully engineered and Wind Tunnel tested for Cooling Performance Validation. CSF has over 10,000 different models of radiators that they manufacture and supply for all the leading brands of vehicles on the road.
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    Mahle-Behr - Corporate Logo
    T#:1341
    Part#: 17111436062
    Ships in 2 Business Days
    $ 327.54

    This product was last offered at the strikethrough price on
    08-14-2026

    $ 277.71 USD
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    $ 277.71 USD
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    OEM BEHR brand replacement radiator for all E39 M5, as produced in 2000, 2001, 2002 and 2003. This radiator is made by BEHR, an original equipment supplier to BMW. BEHR radiators are what we use our own BMWs and customer installs. We've found the BEHR radiator has the highest lifespan, least amount of manufacturing defects, and best continued cooling performance on the E39 M5. Simply put, you do not want anything else in your M5 but a BEHR brand radiator.

    Hailing from Stuttgart, Mahle-Behr specializes in automotive cooling systems. From air conditioning to engine cooling M-B has you covered with OE-quality replacement parts.​

    This BEHR radiator fits the following BMWs:
    2000-2003 E39 M5 sedan
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    Mahle-Behr - Corporate Logo
    T#:341080
    Part#: 11531436386
    In Stock
    $ 173.99 USD
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    $ 173.99 USD
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    Don't take chances! Proper maintenance is required to keep your BMW performing at peak levels. The thermostat basically controls when your car will overheat. The sensor on the housing is also used by the engine computer to set the fuel mapping on the engine. A faulty sensor or thermostat will lead to the engine running rich (too much fuel). This thermostat fits BMW E39 540i 99-03 E38 740i 99-01 X5 4.4i 4.6is 99-2003 with M62 engine.

    Hailing from Stuttgart, Mahle-Behr specializes in automotive cooling systems. From air conditioning to engine cooling M-B has you covered with OE-quality replacement parts.

    This item fits the following BMWs:
    1999-2001  E38 BMW  740i 740il
    1999-2003  E39 BMW  540i
    1999-2003  E53 BMW  X5 4.4i X5 4.6is
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    URO Premium Aluminum Water Pipe - BMW M52TU M54
    2X Entries Into Our F80 M3 Sweepstakes
    URO Premium - Corporate Logo
    T#:587659
    Part#: 11537502525PRM
    Ships in 2 Business Days
    $ 71.99 USD
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    $ 71.99 USD
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    This plastic coolant water pipe connects the expansion tank return hose with the engine block


    Mishimoto - Corporate Logo
    T#:1256484
    Part#: MMOCULTBK
    Ships in 4 Business Days
    $ 599.99 USD
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    $ 599.99 USD
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    Introducing Mishimoto's Universal Oil Cooler (19 row with Thermostat)

    In pursuit of optimal engine lubrication, even under ideal driving conditions, is paramount for BMW owners. Elevated oil temperatures can compromise oil pressure and hinder efficient lubrication. Turner Motorsport's new oil cooler offers a solution to maintain cool oil temperatures, ensuring your engine functions at its best. This comprehensive kit includes four feet of stainless braided line, adapter fittings, and an oil filter sandwich adapter.

    Key Features:

    • Effective Heat Dissipation: The oil cooler efficiently dissipates heat, keeping oil temperatures within the optimal range for peak engine performance.
    • Comprehensive Kit: This kit includes four feet of stainless braided line, adapter fittings, and an oil filter sandwich adapter, providing everything you need for a seamless installation.
    • Precise Temperature Control: Equipped with a thermostat for fine temperature and flow control, ensuring the ideal oil temperature is maintained.
    • Proposition 65 Compliant: This product complies with Proposition 65, a California law that ensures product safety.

    Elevate your BMW's engine performance and protect it from the effects of elevated oil temperatures. Turner Motorsport has the solution you need.

    WARNING! Prop 65 may apply to this product.

    Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968) is a California law that applies to all companies selling products in California. Prop 65 requires any listed chemical present above very low levels that are known to cause cancer, birth defects, or other reproductive harm.

    For more information about California Prop 65 warning, see: www.P65Warnings.ca.gov.

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    Mahle-Behr - Corporate Logo
    T#:361568
    Part#: 17111741167
    Ships in 2 Business Days
    $ 100.99

    This product was last offered at the strikethrough price on
    05-07-2026

    $ 88.99 USD
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    $ 88.99 USD
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    This radiator expansion tank (coolant reservoir) is used on E39 540i from 1997-2003 and E38 740i 740il 750il from 1995-2001. It is a common failure item. We have found that the expansion tanks should be replaced based on age as well as condition. Expansion tanks seem to have a lifespan of less than six years before they show signs of fatigue and wear. Pre-emptively replacing the expansion tank as part of an overall maintenance plan can prevent you from getting stranded from a sudden failure later on. This OEM Hella tank will give you a long life-span and will put your worries to rest of possible failure and coolant loss.

    Hella is a premium manufacturer that supplies automotive parts to numerous car brands across the world. Everything from electrical to mechanical genuine parts have been made and supplied directly to BMW before the vehicles ever leave the production floor. Their high quality, long lasting parts have made them a trusted brand chosen to help keep your BMW on the road for many years to come.

    As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts.  All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!

    This item fits the following BMWs:
    1997-2003 E39 BMW 540i, 540i wagon
    1995-2001 E38 BMW 740i 740il 750il
    1990-1998 E31 BMW 840i 840ci 850i 850ci
    2000-2003 E52 BMW Z8

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