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
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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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    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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    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#:338704
    Part#: TMS14417
    Ships in 10 Business Days
    Sale - Save 6% $ 773.99

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    05-03-2026

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    This product was last offered at the strikethrough price on
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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 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#:30463918
    Part#: 11510393340KT3
    Ships in 1-2 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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    Valley Pan Service Kit - Level 2
    10X Entries Into Our F80 M3 Sweepstakes
    Packaged by Turner - Corporate Logo
    T#:15777315
    Part#: 11141742042-KT
    Ships in 10 Business Days
    $ 458.99

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

    $ 456.99 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 Style Hose Clamps
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    Turner Motorsport - Corporate Logo
    T#:338927
    Part#: HOSE-CLAMPS
    In Stock
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    Hose clamps for radiator hoses, coolant hoses, vacuum hoses, or intake hoses. These hose clamps are the same style as your OEM hoses with a smooth inside band to prevent cutting into the hose material.
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    ECS Tuning Aluminum Coolant Bleeder Screw
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    ECS - Corporate Logo
    T#:363070
    Part#: 003530ECS01A
    In Stock
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    Replace the flimsy plastic bleeder screw used in the coolant expansion tank or in one of the cooling system hoses with this high quality, durable, aluminum bleeder screw. The stock plastic screw can deform over time due to heat or even regular use. We have even seen the head of the screw snap off, leaving the threaded body stuck in the expansion tank. This aluminum screw will help to prevent sudden failure of the bleeder screw, which can result in immediate overheating of the car.

    ECS Tuning's Aluminum Coolant Bleeder Screw replaces Genuine BMW Part Number 17111712788

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    Race German - Corporate Logo
    T#:6827887
    Part#: RGCTSAM12
    In Stock
    $ 35.99 USD
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    Race German has devoted themselves to providing quality products for late model BMWs that cover both street and track applications. Race German has now grown their catalog to a wide variety of models and products geared towards keeping your car looking and running nice. For those looking to install an aftermarket coolant temp gauge, Race German has the perfect accessory for you! This adapter is machined out of aluminum and splices into your upper radiator hose. Perfect for use with Race German's E30 temperature gauge but has compatibility with a wire variety of other cars as well! Features: Tapped for M12x1.5 sized sensor 38mm diameter outlets which fit most BMW hoses Includes 2x hose clamps **Does not include temp sensor
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    Race German - Corporate Logo
    T#:6827888
    Part#: RGCTSA1/8NPT
    In Stock
    $ 35.99 USD
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    Race German has devoted themselves to providing quality products for late model BMWs that cover both street and track applications. Race German has now grown their catalog to a wide variety of models and products geared towards keeping your car looking and running nice. For those looking to install an aftermarket coolant temp gauge, Race German has the perfect accessory for you! This adapter is machined out of aluminum and splices into your upper radiator hose. Perfect for use with Race German's E30 temperature gauge but has compatibility with a wire variety of other cars as well! Features: Tapped for 1/8NPT sized sensor 38mm diameter outlets which fit most BMW hoses Includes 2x hose clamps **Does not include temp sensor
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    70-78mm - T-Bolt Hose Clamp - Priced each
    10X Entries Into Our F80 M3 Sweepstakes
    ECS - Corporate Logo
    T#:380416
    Part#: 003402ECS07A-03
    In Stock
    Sale - Save 25% $ 31.99

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    $ 23.99 USD
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    Ensure a tight and leak-free seal in your BMW's cooling, vacuum, or intake systems by installing a new adjustable hose clamp. Over time, clamps can deform or lose their tightness due to aging or frequent removal, potentially causing leaks in your coolant or vacuum hoses. Avoid the risk of leaks by replacing old clamps with new hardware, offering peace of mind against coolant and vacuum system issues.

    Key benefits of the adjustable hose clamp include:

    • Maintaining a secure and leak-free seal in your BMW's systems.
    • Preventing coolant or vacuum leaks that can affect performance.
    • Adjustable size from 70mm to 78mm for versatile applications.

    Upgrade your hose clamps to ensure optimal performance and reliability in your BMW's systems.

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    OEM Nissens Radiator - E39 540i M5 E38 740/750 (09/1998+), E52 Z8 & Z...
    For vehicles with automatic transmission and production date from 09/1998
    Nissens - Corporate Logo
    T#:380578
    Part#: 17111436063
    In Stock
    $ 188.99 USD
    $ 188.99 USD
    This radiator is made by Nissens, an original equipment supplier to BMW. The cooling system is a weak point on most BMWs, causing many BMWs to develop issues in as few as 50,000 miles. Overheating your engine can and usually will result in large repair bills and sometimes a warps the cylinder head(s), requiring intensive repair or full replacement. Prevent potential failure by replacing your radiator early, keeping your BMW happy and cool. This is the brand we use exclusively on our own BMWs, and think you should as well! 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!
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    OEM Nissens Radiator - E38 740/750, E34 528i 540i (up to 09/1998) ...
    For vehicles with production date up to 09/1998
    Nissens - Corporate Logo
    T#:362934
    Part#: 17111702969
    In Stock
    $ 252.99 USD
    $ 252.99 USD
    This radiator is made by Nissens, an original equipment supplier to BMW. The cooling system is a weak point on most BMWs, causing many BMWs to develop issues in as few as 50,000 miles. Overheating your engine can and usually will result in large repair bills and sometimes a warps the cylinder head(s), requiring intensive repair or full replacement. Prevent potential failure by replacing your radiator early, keeping your BMW happy and cool. This is the brand we use exclusively on our own BMWs, and think you should as well! 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!
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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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    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
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    $ 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
    5X Entries Into Our F80 M3 Sweepstakes
    We Price Match - Give Us A Call or Chat!
    Meyle - Corporate Logo
    T#:591319
    Part#: 11527502804
    In Stock
    $ 101.99 USD
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    OEM replacement

    Band Hose Clamp | 12-20mm 3/8"/9mm
    10X Entries Into Our F80 M3 Sweepstakes
    ECS - Corporate Logo
    T#:304266
    Part#: 003402ECS06A-03
    In Stock
    Sale - Save 25% $ 4.99

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    $ 3.74 USD
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    $ 4.99

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    Secure hoses in your BMW effortlessly with the ECS 3/8" / 9mm Band Hose Clamp (12-20mm). Specifically designed for BMW models, this clamp ensures a snug fit and reliable hold for hoses measuring between 12mm to 20mm. Crafted with durable materials, these clamps provide exceptional resistance against leaks and are ideal for various automotive applications. Upgrade your BMW's hose security with these reliable ECS hose clamps.
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    40-60mm 3/8"/9mm Band Hose Clamp
    10X Entries Into Our F80 M3 Sweepstakes
    ECS - Corporate Logo
    T#:341280
    Part#: 003402ECS06A-08
    In Stock
    Sale - Save 25% $ 3.99

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

    $ 2.99 USD
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    ECS Tuning 304 Stainless Steel Hose Clamps

    Revolutionize your car maintenance with ECS Tuning's premium 304 stainless steel hose clamps. Eliminate dealership delays and inflated prices! These German-style clamps utilize T-bolts for hassle-free diameter adjustment. With various band widths available, these durable clamps ensure reliability without the hefty cost. Experience dealership-quality products at affordable rates, exclusively at ECS Tuning.

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    3/8"/9mm Band Hose Clamp - 50-70mm
    10X Entries Into Our F80 M3 Sweepstakes
    ECS - Corporate Logo
    T#:341684
    Part#: 003402ECS06A-12
    In Stock
    Sale - Save 25% $ 6.99

    This product was last offered at the strikethrough price on
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    $ 5.24 USD
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    Elevate your BMW maintenance with ECS Tuning's 304 stainless steel hose clamps, offering convenience and top-quality performance at an affordable price. Designed with various band widths and German-style T-bolts for adjustable sizing, these hose clamps ensure a secure fit for your specific diameter needs. Skip the dealership wait and excessive pricing; ECS Tuning provides reliable, dealership-quality hose clamps without the premium cost, ensuring your car receives the care it deserves.
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    90-110mm 3/8"/9mm Band Hose Clamp
    10X Entries Into Our F80 M3 Sweepstakes
    ECS - Corporate Logo
    T#:341281
    Part#: 003402ECS06A-13
    In Stock
    Sale - Save 40% $ 6.99

    This product was last offered at the strikethrough price on
    05-02-2026

    $ 4.19 USD
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    ECS Tuning 304 Stainless Steel Hose Clamps

    Once again, ECS Tuning has found a way to make life easier for working on your car. Need new hose clamps but don't want to wait to order it from the dealership or pay more than you should for a hose clamp? That's where we come in! These are full 304 stainless steel hose clamps with various band widths for your convenience. They are German style using T-bolts to adjust in size to your required diameter. Never pay dealer pricing again, but still get the quality you love here at ECS Tuning.

    • Made from high-quality 304 stainless steel for durability
    • German-style design with T-bolts allows for easy size adjustment
    • Various band widths for versatile use
    • Avoid dealership pricing without compromising on quality
    • Perfect for BMW enthusiasts seeking affordable yet reliable hose clamps
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    77-85mm - 3/4" Band Hose Clamp
    10X Entries Into Our F80 M3 Sweepstakes
    ECS - Corporate Logo
    T#:377877
    Part#: 003402ECS07A-05
    In Stock
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    This product was last offered at the strikethrough price on
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    $ 19.49 USD
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    Upgrade your BMW's hose clamps with the 77-85mm - 3/4" Band Hose Clamp from Turner Motorsport. These full 304 stainless steel clamps offer convenience and quality without the dealership price tag. German-style T-bolts allow for easy adjustment to your required diameter, ensuring a secure fit every time.

    • Made of durable 304 stainless steel for long-lasting performance
    • German-style T-bolt design for easy size adjustment
    • Convenient band widths for versatile applications
    • Quality alternative to dealership pricing
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    Meyle Expansion Tank Cap
    5X Entries Into Our F80 M3 Sweepstakes
    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
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    Replace worn or missing pieces.

    1/2"/12mm Band Hose Clamp - 25-40mm - Priced Each
    10X Entries Into Our F80 M3 Sweepstakes
    ECS - Corporate Logo
    T#:385425
    Part#: 003402ECS05A-06
    In Stock
    Sale - Save 25% $ 4.99

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

    $ 3.74 USD
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    $ 4.99

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    Upgrade Your BMW Maintenance with Stainless Steel Hose Clamps from ECS Tuning

    ECS Tuning introduces premium full stainless steel hose clamps, offering superior quality and convenience for your BMW maintenance. Avoid dealership delays and overpricing by choosing from a selection of band widths, ensuring you receive top-quality hose clamps without overpaying.

    Key Benefits:

    • Premium full stainless steel hose clamps
    • Various band widths for enhanced convenience
    • High-quality alternative to dealership pricing
    • Readily available stock eliminates waiting time
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    70-90mm 3/8"/9mm Band Hose Clamp
    10X Entries Into Our F80 M3 Sweepstakes
    ECS - Corporate Logo
    T#:363017
    Part#: 003402ECS06A-11
    In Stock
    Sale - Save 25% $ 6.99

    This product was last offered at the strikethrough price on
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    $ 5.24 USD
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    Upgrade your BMW with ECS Tuning's Stainless Steel Hose Clamps, designed for convenience and durability. With various band widths and German-style T-bolts, these clamps offer easy adjustment to your required diameter. Say goodbye to dealer pricing and enjoy the quality you love at ECS Tuning.

    • Full stainless steel construction
    • Various band widths available
    • German-style T-bolts for easy adjustment
    • Convenient solution for hose clamp replacement
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    60-80mm 1/2"/12mm Band Hose Clamp
    10X Entries Into Our F80 M3 Sweepstakes
    ECS - Corporate Logo
    T#:377836
    Part#: 003402ECS05A-10
    In Stock
    Sale - Save 25% $ 6.99

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

    $ 5.24 USD
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    ECS Tuning Stainless Steel Hose Clamps for BMW

    Upgrade your BMW's hose clamps with ECS Tuning Stainless Steel Hose Clamps, designed for convenience and durability. Say goodbye to long waits and overpriced dealership clamps. With various band widths available, these stainless steel clamps ensure a secure fit for your vehicle's hoses.

    Benefits:

    • Convenient replacement for worn-out hose clamps
    • Made of durable stainless steel for long-lasting performance
    • Available in various band widths for versatile use
    • Affordable alternative to dealership pricing
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    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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    Vaico - Corporate Logo
    T#:595257
    Part#: 11531711384
    Ships in 1 Business Day
    $ 129.99

    This product was last offered at the strikethrough price on
    05-08-2026

    $ 125.99 USD
    $ 125.99 USD
    This hose connects the radiator outlet hose to the transmission heat exchanger
    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

    Beru - Corporate Logo
    T#:596874
    Part#: 12621288158
    Ships in 1-2 days
    $ 44.99 USD
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    $ 44.99 USD
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    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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    Hose Clamp 2 5/16" - 3 1/4" - priced each
    10X Entries Into Our F80 M3 Sweepstakes
    ECS - Corporate Logo
    T#:376806
    Part#: 54155K23
    Ships in 1-2 days
    $ 4.99 USD
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    Hose Clamp 2 5/16" - 3 1/4"

    Ensure secure hose connections with the Hose Clamp 2 5/16" - 3 1/4", a versatile and reliable solution for various applications. Crafted from durable materials, this clamp offers superior strength and corrosion resistance. Its adjustable design allows for a snug fit, reducing the risk of leaks and ensuring optimal performance. Upgrade your hose connections with the precision and reliability of the Hose Clamp 2 5/16" - 3 1/4".

    • Versatile and reliable solution for various applications
    • Superior strength and corrosion resistance
    • Adjustable design for a snug fit
    • Reduces risk of leaks for optimal performance
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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 4 Business Days
    $ 15.99 USD
    Free Shipping on orders $49 and up
    $ 15.99 USD
    Free Shipping on orders $49 and up
    2 pin

    2 Pin Connector
    10X Entries Into Our F80 M3 Sweepstakes
    ECS - Corporate Logo
    T#:33412932
    Part#: 61132359999
    In Stock
    Sale - Save 25% $ 10.99

    This product was last offered at the strikethrough price on
    06-14-2026

    $ 8.24 USD
    Free Shipping on orders $49 and up
    Sale - Save 25%
    $ 10.99

    This product was last offered at the strikethrough price on
    06-14-2026

    $ 8.24 USD
    Free Shipping on orders $49 and up

    Includes connector housing with terminals and seals. Commonly used for the coolant level sensor.

    ECS Tuning replacement harness connectors include all necessary pins and wire seals for a complete harness repair. Whether you have a broken harness connector or need a complete wiring repair, we have the components you need.

    Each connector includes an additional terminal in case one becomes lost or damaged during installation.

    *OEM cross reference PN# 61132359999 - Commonly used for the coolant level sensor.

    Please reference the original part number from the existing connector to confirm fitment, before ordering.

    Suggested tools:

    Suggested crimping pliers: T#387193
    Wire De-pin tools:
    12pc De-Pin Tool Set - T#386379
    23pc De-Pin Tool Set - T#641943

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    Coolant Temperature Sensor
    Located on water pump housing
    5X Entries Into Our F80 M3 Sweepstakes
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    Meyle - Corporate Logo
    T#:594615
    Part#: 13621703993
    Ships on Oct 22, 2026
    $ 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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    Coolant Level Sensor
    5X Entries Into Our F80 M3 Sweepstakes
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    Meyle - Corporate Logo
    T#:594511
    Part#: 61318360876
    Ships on Oct 22, 2026
    $ 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.

    Auxillary Fan Switch
    5X Entries Into Our F80 M3 Sweepstakes
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    Meyle - Corporate Logo
    T#:4934936
    Part#: 3148210000
    Ships on Oct 22, 2026
    $ 18.99 USD
    Free Shipping on orders $49 and up
    $ 18.99 USD
    Free Shipping on orders $49 and up
    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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