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#: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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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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    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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    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

    Genuine BMW - Corporate Logo
    T#:360668
    Part#: 11531436386
    In Stock
    3% off MSRP $ 200.99

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

    $ 193.99 USD
    Free Shipping
    3% off MSRP
    $ 200.99

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

    $ 193.99 USD
    Free Shipping

    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. 

    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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    Genuine BMW - Corporate Logo
    T#:15154
    Part#: 17217505823
    Ships in 6 Business Days
    3% off MSRP $ 381.99

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

    $ 371.99 USD
    Free Shipping
    3% off MSRP
    $ 381.99

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

    $ 371.99 USD
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    Part of any cooling system overhaul on the 540i or 740i/iL should include a service for the automatic transmission heat exchanger (cooler). This block takes coolant from the radiator and uses it to cool the oil for the transmission. A blocked or faulty transmission cooler can lead to major transmission faults, harder or hesitating shifts, or even complete transmission failure. We recommend getting 2 new o-rings while replacing the the heat exchanger. il As part of every cooling system service we recommend cleaning or replacing the heat exchanger itself and the replacement of the hoses leading to it (see separate product).

    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:
    1999-2003 E39 BMW 540i
    1999-2001 E38 BMW 740i 740il
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    Genuine BMW Water Pipe - E38 740i 740iL E39 540i
    For vehicles with production date from 09/1998
    Genuine BMW - Corporate Logo
    T#:367678
    Part#: 11531711384
    In Stock
    3% off MSRP $ 85.99

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

    $ 82.99 USD
    Free Shipping
    3% off MSRP
    $ 85.99

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

    $ 82.99 USD
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    Genuine BMW - Corporate Logo
    T#:360664
    Part#: 11527502804
    Ships in 3 Business Days
    3% off MSRP $ 401.99

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

    $ 388.99 USD
    Free Shipping
    3% off MSRP
    $ 401.99

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

    $ 388.99 USD
    Free Shipping
    Genuine BMW - Corporate Logo
    T#:360748
    Part#: 17111741167
    In Stock
    2% off MSRP $ 164.99

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

    $ 160.99 USD
    Free Shipping
    2% off MSRP
    $ 164.99

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

    $ 160.99 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 OE BMW tank will give you a long life-span and will put your worries to rest of possible failure and coolant loss.

    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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    Genuine BMW Water Pump for M62 4.4/4.6/4.8L Engine
    For vehicles with production date from 09/1998
    Genuine BMW - Corporate Logo
    T#:360655
    Part#: 11510393336
    Ships in 1 day
    6% off MSRP $ 500.99

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

    $ 470.99 USD
    Free Shipping
    6% off MSRP
    $ 500.99

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

    $ 470.99 USD
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    Ensure optimal engine performance with Turner Motorsport's High-Quality Water Pump for your BMW. This crucial component maintains smooth coolant circulation, preventing overheating issues. Replacing the water pump is essential to safeguard engine internals and prevent costly repairs.

    Key Benefits:

    • Prevents overheating problems.
    • Safeguards engine internals.
    • Common issue addressed in German vehicles.
    • Vital for preventing unnecessary repair trips.
    • Guards against rapid coolant temperature rise.
    • Averts potential head gasket or piston ring failure.
    • Ideal preventative maintenance during timing belt replacement.

    Don't risk engine damage; choose Turner Motorsport's Water Pump for reliable coolant circulation and engine protection.

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    Genuine BMW - Corporate Logo
    T#:6866
    Part#: 11511742045
    Ships in 1 day
    1% off MSRP $ 91.99

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

    $ 90.99 USD
    Free Shipping
    1% off MSRP
    $ 91.99

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

    $ 90.99 USD
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    Genuine BMW Pulley - D=112mm
    This item fits the following BMW Chassis:
    E38,E39,E53 X5

    Fits BMW Engines including:
    M62

    Genuine BMW Coolant Crossover Pipe
    For vehicles with a production date from 09/1998
    Genuine BMW - Corporate Logo
    T#:35866
    Part#: 11531437493
    Ships in 6 Business Days
    3% off MSRP $ 358.99

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

    $ 347.99 USD
    Free Shipping
    3% off MSRP
    $ 358.99

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

    $ 347.99 USD
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    Genuine BMW Cooling System Accumulator -
    This item fits the following BMW Chassis:
    E38,E39,E53 X5

    Fits BMW Engines including:
    M62

    Genuine BMW - Corporate Logo
    T#:35891
    Part#: 11531711885
    Ships in 3 Business Days
    4% off MSRP $ 141.99

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

    $ 136.99 USD
    Free Shipping
    4% off MSRP
    $ 141.99

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

    $ 136.99 USD
    Free Shipping


    Genuine BMW Coolant Pipe, Return Line -
    This item fits the following BMW Chassis:
    E38

    Fits BMW Engines including:
    M73N



    Genuine BMW - Corporate Logo
    T#:367679
    Part#: 11531711877
    Ships in 6 Business Days
    $ 77.99 USD
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    $ 77.99 USD
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    Meyle Water Pump - M62
    5X Entries Into Our F80 M3 Sweepstakes
    We Price Match - Give Us A Call or Chat!
    Meyle - Corporate Logo
    T#:579328
    Part#: 11510393336
    Ships on Oct 22, 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.
    Show More Show Less
    Genuine BMW - Corporate Logo
    T#:35937
    Part#: 11531741202
    Special Order: No Guaranteed ETA
    6% off MSRP $ 100.99

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

    $ 94.99 USD
    Free Shipping
    6% off MSRP
    $ 100.99

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

    $ 94.99 USD
    Free Shipping


    Genuine BMW Pipe -
    This item fits the following BMW Chassis:
    E38,E39,E53 X5

    Fits BMW Engines including:
    M62


    Genuine BMW Thermostat With Housing - E39 540i
    For vehicles with production date up to 09/1998
    Genuine BMW - Corporate Logo
    T#:360671
    Part#: 11531437526
    Ships in 1 day
    3% off MSRP $ 200.99

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

    $ 193.99 USD
    Free Shipping
    3% off MSRP
    $ 200.99

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

    $ 193.99 USD
    Free Shipping

    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 item fits the following BMWs: 
    up to 09/1999  E38 BMW  740i 740il
    up to 09/1999  E39 BMW  540i

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    Genuine BMW - Level 2 Cooling System Kit - M62TU E39, E38
    For vehicles with production date from 09/1998
    Genuine BMW - Corporate Logo
    T#:374432
    Part#: 17111741167KT1
    Ships in 1 day
    $ 1,099.99

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

    $ 1,098.99 USD
    Free Shipping
    $ 1,098.99 USD
    Free Shipping
    Genuine BMW - Level 1 Thermostat Replacement Kit- M62TU
    For vehicles with production date from 09/1998
    Genuine BMW - Corporate Logo
    T#:374624
    Part#: 11531436386KT
    Ships in 1 day
    $ 236.99 USD
    Free Shipping
    $ 236.99 USD
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    Genuine BMW- Level 2 Cooling System Refresh Kit - M62 E39, E38 ...
    For vehicles with production date up to 09/1998
    Genuine BMW - Corporate Logo
    T#:374431
    Part#: 17111741167KT
    Ships in 1 day
    $ 1,060.99 USD
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    $ 1,060.99 USD
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