BMW Cooling System Parts & Accessories for BMW 7 Series E38 (1995-2001)

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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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Packaged by Turner - Corporate Logo
T#:338704
Part#: TMS14417
Ships on Sep 16, 2026
Sale - Save 7% $ 773.99

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

Starting at $ 723.61 USD
Sale - Save 7%
$ 773.99

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

Starting at $ 723.61 USD
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 540i with the M62TU VAN0S 4.4-liter engine. 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. Our bundled package includes the following:
  • OEM Behr radiator (select for manual or automatic transmission)
  • OEM water pump (choose either the metal or composite impeller)
  • OE BMW coolant temp sensor (located in the water pump housing)
  • OEM Behr thermostat with housing and sensor
  • OEM Behr expansion tank with cap
  • OE BMW upper and lower radiator hoses with expansion tank hose
    Optional items (which can be added below):
    - OE BMW antifreeze
    - Add a new coolant level sensor (known for failing / throwing "check coolant" messages)
    - Replace the heat exchanger coolant lines for the automatic transmission
    - Add a new fan clutch

    Buy as a package and save $$$!

    This cooling system overhaul kit fits the following BMWs:
    1999-2003 E39 BMW 540i
    1999-2001 E38 BMW 740i 740il
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    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 $ 132.98 USD
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    Starting at $ 132.98 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#: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
    Free Shipping
    Sale - Save 5%
    $ 171.99

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

    Starting at $ 163.48 USD
    Free Shipping
    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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    Packaged by Turner - Corporate Logo
    T#:30463918
    Part#: 11510393340KT3
    Ships in 2 Business Days
    $ 266.99 USD
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    $ 266.99 USD
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    Maintain your BMW's cooling system and avoid costly repairs with our all-inclusive Water Pump and Thermostat Replacement Kit, expertly crafted by enthusiasts at Turner Motorsport. Designed specifically for your BMW model, this kit ensures proper engine operation at optimal temperatures, preventing overheating and extending engine life.

    Key Benefits:

    Comprehensive Kit: Simplify your cooling system overhaul with all necessary components in one package. High-Quality Parts: Each component meets or exceeds OEM standards, ensuring reliable performance and longevity. Optimal Cooling Performance: Regular water pump and thermostat replacement every 60,000 miles maintains peak cooling efficiency. Enhanced Reliability: Premium components like the Wahler Thermostat and Graf Water Pump ensure durable, long-lasting performance. Why Choose This Kit:

    Maximize Cooling System Performance: Replacing your water pump and thermostat simultaneously ensures your BMW’s cooling system operates efficiently. Protect Your Engine: Properly flushing and refilling your cooling system with Genuine BMW coolant guarantees optimal freeze protection and corrosion resistance. Convenient and Cost-Effective: Combining all essential parts in one kit simplifies maintenance and ensures a thorough, lasting repair. Planning a cooling system overhaul? Opt for this comprehensive thermostat and water pump replacement kit for a lasting repair.

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    Packaged by Turner - Corporate Logo
    T#:15777315
    Part#: 11141742042-KT
    Ships on Sep 16, 2026
    $ 464.99

    This product was last offered at the strikethrough price on
    04-06-2026

    $ 458.99 USD
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    $ 458.99 USD
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    Valley pan gaskets are a common failure on the M62 motors, Symptoms can include a smell of coolant regularly or a mysterious loss of coolant with no identifiable leaks. This kit contains the basics need to be replaced when doing a valley pan gasket. The included Geba water pump has a metal impeller to replace the failure prone plastic OEM impeller. It is always a good idea to replace the accessory belts when ever they need to be removed to ensure proper tension and belt integrity. Kit includes Valley pan with rubber gasket: updated valley pan alleviates the core of the issue - the design! Valley pan securing hardware Valley pan heat shield Water pipe o-rings Water cross over gaskets Throttle body gasket Geba water pump with gasket Intake gaskets Accessory belt A/C belt
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    OEM Coolant Return Pipe from Water Pump Hose to Transmission Cooler T...
    2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    Rein - Corporate Logo
    T#:6945
    Part#: 11531711384
    In Stock at Vendor
    $ 68.99 USD
    Free Shipping
    $ 68.99 USD
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    This is the cooling system return hose that goes from the automatic transmission cooling thermostat to the hose that comes off the lower water pump outlet.1999-2003 E39 BMW 540i
    1999-2001 E38 BMW 740i 740il
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    Coolant Temperature Sensor
    Located on the water pump housing
    Meistersatz - Corporate Logo
    T#:379617
    Part#: 13621703993
    In Stock
    $ 25.99 USD
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    $ 25.99 USD
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    BMW Engine Water Hose 11531711877
    2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    Rein - Corporate Logo
    T#:6947
    Part#: 11531711877
    In Stock
    $ 71.99 USD
    Free Shipping
    $ 71.99 USD
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    GENUINE BMW ENGINE WATER HOSE 11531711877.--

    This item fits the following BMWs:
    BMW 7 Series - 750iL

    --.

    Coolant Expansion Tank
    2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    Rein - Corporate Logo
    T#:591959
    Part#: 17111741167
    Ships in 1 Business Day
    $ 69.99 USD
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    $ 69.99 USD
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    Plastic has a limited lifespan - replace every 80,000 miles

    Rein - Corporate Logo
    T#:46719191
    Part#: CHK0008P
    Ships in 3 Business Days
    $ 61.99 USD
    Free Shipping on orders $49 and up
    Keep your cooling system sealed, strong, and ready for anything with this Rein radiator hose kit—your all-in-one fix for cracked, leaking, or worn factory hoses. Years of heat, pressure, and age can cause rubber to weaken, split, or swell, setting the stage for coolant leaks and potential overheating. Rein hoses are engineered to meet or exceed OEM standards, built from premium, heat-resistant materials that can take on extreme temperatures and system pressures without faltering. Each hose features factory-correct bends, fittings, and diameters for an exact, hassle-free installation—no cutting or forcing required. Whether you’re tackling a full cooling system refresh or chasing down a small coolant leak, this Rein kit provides everything needed to restore confidence and performance under the hood. Why choose this Rein radiator hose kit: Factory-level precision – Direct-fit replacements that deliver OEM-quality reliability. Built to last – Resists cracking, swelling, and chemical damage from daily heat cycling. Confidence restored – Prevents coolant loss, overheating, and on-road breakdowns. All-in-one upgrade – Includes upper and lower hoses for a complete system refresh. If keeping your BMW’s cooling system running tight and trouble-free is the goal, Rein brings the dependable quality and fitment you can count on—engineered to perform just like factory, mile after mile.
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    Meyle Water Pump - M62
    We Price Match - Give Us A Call or Chat!
    Meyle - Corporate Logo
    T#:579328
    Part#: 11510393336
    Ships on Dec 24, 2026
    $ 106.99 USD
    Free Shipping
    $ 106.99 USD
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    Don't take your car's cooling system for granted. A waterpump failure can cost you an engine, which is why preventatively replacing your BMWs waterpump and refreshing the cooling system every 60,000 miles. The water pump is a weak point is the cooling system. Replacing your waterpump will go a long way for keeping your car on the road and operating properly.
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    Meyle Radiator Fan Clutch - E31, E32, E34, E38, E39
    We Price Match - Give Us A Call or Chat!
    Meyle - Corporate Logo
    T#:591319
    Part#: 11527502804
    Ships on Dec 24, 2026
    $ 101.99 USD
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    OEM replacement


    Rein Coolant Bleeder Screw CHW1575 - Priced Each
    2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    Rein - Corporate Logo
    T#:591955
    Part#: 17111712788
    In Stock
    $ 4.99 USD
    Free Shipping on orders $49 and up
    Coolant Bleeder Screw is a critical component for maintaining your BMW’s cooling system. Designed to release trapped air from the coolant lines, this screw ensures efficient coolant flow and prevents overheating. Specifically engineered for BMW models, it enhances the overall performance and longevity of your engine by maintaining proper temperature regulation. Comes with O-Ring.
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    OE Rein Lower Radiator Hose - E39 540i, E38 740i/IL 1996-1998 ...
    2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    Rein - Corporate Logo
    T#:374352
    Part#: 11531741409
    In Stock
    $ 17.99 USD
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    This item fits the following BMWs:    
    1997-1998   E39 BMW   540i  
    1996-1998   E38 BMW   740i 740il 
    Rein Expansion Tank Hose - E31, E38, E39
    2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    Rein - Corporate Logo
    T#:375756
    Part#: 11531741404
    In Stock
    $ 8.45 USD
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    Connects the expansion tank to the radiator

    Rein Water Pump O-Ring (Small) - E32, E34, E38, E39
    2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    Rein - Corporate Logo
    T#:379680
    Part#: 11531710055
    In Stock
    $ 2.03 USD
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    When it comes time to replace the water pump, be sure to replace all the O-Rings associated with it to ensure that your car stays leak free. If you are experiencing leaking issues, be sure to inspect these rings, as they might have worn down. This specific ring is used when replacing water pump on cooling pipe to the water accumulator. There are two per car.
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    OEM Rein Expansion Tank Cap - BMW E32 E34 E36 E38 E39 E46 & More ...
    2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    Rein - Corporate Logo
    T#:340541
    Part#: 17111742231
    Ships in 1 Business Day
    $ 17.99 USD
    Free Shipping on orders $49 and up
    This radiator expansion tank cap is used most BMW's from 1991-2006. It is a common failure item. When this item fails, it cannot hold pressure which results in your BMW overheating. If you are overhauling your coolant system, now is the time to consider preventative replacing this cap. It is also referred to as the coolant reservoir cap.
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    Meyle Expansion Tank Cap
    We Price Match - Give Us A Call or Chat!
    Meyle - Corporate Logo
    T#:579357
    Part#: 3148009004
    In Stock
    Sale - Save 40% $ 14.99

    This product was last offered at the strikethrough price on
    05-15-2026

    $ 8.99 USD
    Free Shipping on orders $49 and up
    Sale - Save 40%
    $ 14.99

    This product was last offered at the strikethrough price on
    05-15-2026

    $ 8.99 USD
    Free Shipping on orders $49 and up
    Replace worn or missing pieces.

    Meistersatz - Corporate Logo
    T#:379615
    Part#: 12621288158
    Ships in 3 Business Days
    $ 7.99 USD
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    $ 7.99 USD
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    M14x1.5 Thread
    Coolant Temperature Sender - 2 Pin
    Located in the water accumulator Located in the cylinder head
    Meistersatz - Corporate Logo
    T#:379619
    Part#: 12621747281
    Ships in 3 Business Days
    $ 8.99 USD
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    $ 8.99 USD
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    Rein O-RING 14.4X3.0 - E38, E39
    2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    Rein - Corporate Logo
    T#:379805
    Part#: 11537501777
    Ships in 3 Business Days
    $ 6.99 USD
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    $ 6.99 USD
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    Rein Coolant Return line - E38
    2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    Rein - Corporate Logo
    T#:591958
    Part#: 17111737708
    Ships in 3 Business Days
    $ 9.17

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

    $ 9.06 USD
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    $ 9.06 USD
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    From expansion tank to radiator
    Coolant hose
    2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    Rein - Corporate Logo
    T#:592665
    Part#: 64218391121
    Ships in 3 Business Days
    $ 14.99 USD
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    Coolant hose
    2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    Rein - Corporate Logo
    T#:593459
    Part#: 64218390355
    Ships in 3 Business Days
    $ 13.99 USD
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    OEM Rein Heating Core Return Hose - E38 740i/il
    2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    Rein - Corporate Logo
    T#:375753
    Part#: 64218390319
    Ships in 1 Business Day
    $ 7.63 USD
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    Attaches to the water pipe on the back of the engine block to the secondary water pump. Over time, coolant hoses begin to get brittle and are susceptible to cracking and splitting. Replace your cracked or leaking coolant hose to prevent further leaks and potentially catastrophic failure.
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    Rein Radiator Hose - Upper - E38
    2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    Rein - Corporate Logo
    T#:591793
    Part#: 11531741408
    Ships in 1 Business Day
    $ 13.99 USD
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    Hose from radiator to water pump
    OEM Rein Coolant Line - E38
    2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    Rein - Corporate Logo
    T#:379758
    Part#: 64218377662
    Ships in 3 Business Days
    $ 15.99 USD
    Free Shipping on orders $49 and up
    Runs from the right heater core to the water valve. Over time, coolant hoses begin to get brittle and are susceptible to cracking and splitting. Replace your cracked or leaking coolant hose to prevent further leaks and potentially catastrophic failure.
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    Rein Thermostat Assembly E38 740iL
    2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    Rein - Corporate Logo
    T#:34114233
    Part#: 11531437526
    Ships in 1 Business Day
    $ 68.99 USD
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    Regulates Engine coolant temperature. Comes with aluminum housing, O-ring, and sensor.

    OE Rein Upper Radiator Hose - E39 540i, E38 740i/IL 1996-1998 ...
    2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    Rein - Corporate Logo
    T#:6976
    Part#: 11531745595
    Ships in 3 Business Days
    $ 16.99 USD
    Free Shipping on orders $49 and up
    ENGINE WATER HOSE 11531745595.--

    This item fits the following BMWs:
    BMW 5 Series - 540i, 540i Wagon
    BMW 7 Series - 740i, 740iL

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    OEM Rein Coolant Supply Hose - E38 740i/il
    2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    Rein - Corporate Logo
    T#:379736
    Part#: 64218371386
    Ships in 1 Business Day
    $ 10.99 USD
    Free Shipping on orders $49 and up
    Runs from the water valve to the Right heater core inlet. Over time, coolant hoses begin to get brittle and are susceptible to cracking and splitting. Replace your cracked or leaking coolant hose to prevent further leaks and potentially catastrophic failure.
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    OEM Rein Coolant Hose - E38 E39 M62 4.4L
    For vehicles with production date from 09/1998
    2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    Rein - Corporate Logo
    T#:375752
    Part#: 11537511207
    Ships in 3 Business Days
    $ 25.83

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

    $ 19.34 USD
    Free Shipping on orders $49 and up
    $ 19.34 USD
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    Over time, coolant hoses begin to get brittle and are susceptible to cracking and splitting. Replace your cracked or leaking coolant hose to prevent further leaks and potentially catastrophic failure.
    Beru - Corporate Logo
    T#:596874
    Part#: 12621288158
    Ships in 1-2 days
    $ 44.99 USD
    Free Shipping on orders $49 and up
    $ 44.99 USD
    Free Shipping on orders $49 and up
    M14x1.5 Thread. Your vehicle is equipped with numerous gauges to allow you to have a better idea of what is going on under the hood. By monitoring these gauges, you can prevent premature engine damage due to low oil pressure or high coolant temperatures. If one isn't functional though, you are in the dark as far as that system goes. One of the most vital is coolant temperature. Replace the sensor to get your gauge working properly again.
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    Hella Coolant Temperature Sender - E31, E32, E34, E36, E38
    Located in the water accumulator Located in the cylinder head
    Hella - Corporate Logo
    T#:580139
    Part#: 9107471
    Ships in 3 Business Days
    $ 15.99 USD
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    $ 15.99 USD
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    2 pin

    Rein Coolant Overflow Hose
    2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    Rein - Corporate Logo
    T#:19458
    Part#: 17111427156
    Ships on Sep 1, 2026
    $ 5.99 USD
    Free Shipping on orders $49 and up

    Rein Coolant Overflow Hose is designed to meet the highest standards of performance and durability for your vehicle's cooling system. This high-quality hose ensures the proper transfer of excess coolant from the engine to the overflow reservoir, preventing overheating and ensuring optimal engine performance. Manufactured from reinforced rubber materials, the Rein Coolant Overflow Hose guarantees long-lasting reliability and precise fitment for various vehicle makes and models. It’s the perfect upgrade or replacement for worn-out hoses in any cooling system.

    Available through Turner Motorsport, this coolant overflow hose is rigorously tested to withstand extreme temperatures, pressures, and daily use. If you’re looking to maintain or improve your car's cooling efficiency, the Rein Coolant Overflow Hose is an essential component.

    • Precision engineered for a perfect fit
    • Manufactured from durable, reinforced rubber
    • Designed to withstand high temperatures and pressures
    • Improves cooling system efficiency and prevents overheating
    • Easy installation with OE-spec dimensions
    • Available at Turner Motorsport, trusted for automotive parts

    Enhance your vehicle's performance and reliability by replacing your old coolant hose with the Rein Coolant Overflow Hose today.

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    Auxillary Fan Switch
    We Price Match - Give Us A Call or Chat!
    Meyle - Corporate Logo
    T#:4934936
    Part#: 3148210000
    Special Order: No Guaranteed ETA
    $ 18.99 USD
    Free Shipping on orders $49 and up
    $ 18.99 USD
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    The auxiliary fan switch activates the auxiliary cooling fan to provide additional cooling under high heat loads, and when the car is stationary. Also known as the coolant temperature sending unit, comes with related o-ring
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    Coolant Level Sensor
    We Price Match - Give Us A Call or Chat!
    Meyle - Corporate Logo
    T#:594511
    Part#: 61318360876
    Special Order: No Guaranteed ETA
    $ 27.99 USD
    Free Shipping on orders $49 and up
    Monitors the coolant level in the expansion tank. This sensor is critical in keeping tabs of your cooling systems health.


    Coolant Temperature Sensor
    Located on water pump housing
    We Price Match - Give Us A Call or Chat!
    Meyle - Corporate Logo
    T#:594615
    Part#: 13621703993
    Special Order: No Guaranteed ETA
    $ 18.99 USD
    Free Shipping on orders $49 and up
    $ 18.99 USD
    Free Shipping on orders $49 and up
    This is the coolant temperature sensor used in many BMW models from the mid-1990s to the mid-2000s. The engine computer relies on the coolant temp to set the fuel mapping for the engine. As the car warms up the computer changes the fuel mixture. If your car is running a bit rich (too much fuel) it could be because this sensor is failing and not sending the correct info to the computer.

    This sensor is located in a variety of places depending on the engine. But it's one of those easy replacement items 'while you're in there' when doing a water pump or thermostat replacement.

    This coolant temp sensor fits the following BMWs:
    1996-1999 E36 BMW 323is 323ic 328i 328is 328ic M3, located in cylinder head
    1999-2003 E39 BMW 540i, located on side of water pump
    1999-2001 E38 BMW 740i 740il, located on side of water pump
    1995-1996 E38 BMW 750il, located on side of water pump
    1990-1999 E31 BMW 850i 850ci, located on side of water pump
    2000-2006 E53 BMW X5 3.0i, located in cylinder head
    2000-2006 E53 BMW X5 4.4i/4.6is/4.8is, located on side of water pump
    1997-2002 Z3 BMW Z3 2.5i Z3 3.0i, located in cylinder head
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    Rein - Corporate Logo
    T#:46616009
    Part#: EPK0013
    Back Ordered
    $ 71.99 USD
    Free Shipping on orders $49 and up
    The coolant expansion tank in your vehicle gives additional fluid a place to go after expansion and contraction from temperature change. Because it is subjected to such drastic changes on a regular basis, it can often crack or break. You want to keep all the coolant in your vehicle in the cooling system. If your tank has experienced damage such as cracking, nipples breaking off, or mounting point damage, you will need to replace it. This replacement will fit perfectly and provide the same heating and cooling characteristics as an original unit. When replacing, be sure to have some extra coolant. Check ECS Tuning's website for a wide variety of coolants specifically designed for your car. Most German vehicles require specialized coolant. Be sure to pick up the proper coolant when refilling to avoid damage or premature corrosion.
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    OEM Radiator Water Valve Hose - Left - E38 740
    2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    Rein - Corporate Logo
    T#:11094
    Part#: 64218391122
    Back Ordered
    $ 6.54 USD
    Free Shipping on orders $49 and up

    This is the hose that runs from the left radiator to the water valve. Over time, coolant hoses begin to get brittle and are susceptible to cracking and splitting. Replace your cracked or leaking coolant hose to prevent further leaks and potentially catastrophic failure.

     

    This item fits the following BMWs: 
    1999-2001 E38 BMW 740i 740il

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    Expansion Tank Hose
    2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    Rein - Corporate Logo
    T#:379785
    Part#: 17111737819
    Back Ordered
    $ 26.99 USD
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    Connects the expansion tank to the radiator