Find Parts That Fit Your Vehicle

Home
Cooling

BMW Cooling System Parts & Accessories

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.

Sub-Categories

Sort By:

Bav Auto Thermostat With Aluminum Housing - M52TU M54

10X Entries Into Our F80 M3 Sweepstakes

T#:12544802

Part#: 11531437040

In Stock

Sale - Save 19% $ 104.99

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

$ 84.99 USD

Add to Wish List

Qty

Sale - Save 19%

$ 104.99

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

$ 84.99 USD

Add to Wish List

The plastic thermostat cover in your BMW is a known point of failure. Throughout years of repeated contact with hot coolant, the plastic can crack and cause massive coolant leaks and potential overheating. Eliminate one of the weak links in your cooling system with a replacement aluminum thermostat housing. By installing this aluminum unit, you have no worries as far as plastic housing cracks go

Show More Show Less

Bav Auto Coolant Expansion Tank - E36 E39 Z3 M50 M52 S50 S52 ...

10X Entries Into Our F80 M3 Sweepstakes

T#:638094

Part#: 17111723520

In Stock

Sale - Save 20% $ 39.99

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

$ 31.99 USD

Add to Wish List

Qty

Sale - Save 20%

$ 39.99

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

$ 31.99 USD

Add to Wish List

Replace your old expansion tank to prevent potential failure or leaks. Includes a brand new coolant level sensor. From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.

Show More Show Less

Bav Auto Coolant Expansion Tank - E53 X5, E46, E83 X3

10X Entries Into Our F80 M3 Sweepstakes

T#:640496

Part#: 17137787039

In Stock

Sale - Save 18% $ 61.99

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

$ 50.99 USD

Add to Wish List

Qty

Sale - Save 18%

$ 61.99

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

$ 50.99 USD

Add to Wish List

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. From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.

Show More Show Less

Bav Auto Water Pump - BMW N54 N55

10X Entries Into Our F80 M3 Sweepstakes

T#:637476

Part#: 11517632426

In Stock

Sale - Save 17% $ 397.99

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

$ 330.99 USD

Add to Wish List

Qty

Sale - Save 17%

$ 397.99

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

$ 330.99 USD

Add to Wish List

Water pumps are a critical component of your cooling system. A failed water pump will stop the flow of coolant in your vehicle, leading to overheating and eventual engine damage. Replace your faulty or aging water pump with a high-quality Bav Auto unit. Replacement for BMW part # 11517632426 and 11517563659. From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.

Show More Show Less

Bav Auto Heater Inlet Pipe - E46 E39 E53 E83 E85 Z3

10X Entries Into Our F80 M3 Sweepstakes

T#:638080

Part#: 11531705210

In Stock

Sale - Save 20% $ 40.99

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

$ 32.79 USD

Add to Wish List

Qty

Sale - Save 20%

$ 40.99

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

$ 32.79 USD

Add to Wish List

This is the plastic heater inlet pipe that connects the cylinder head to the heater inlet on cars with the M52 or M54 engine. The plastic on this hose becomes brittle over time and eventually leads to failure. Replace yours with a brand new Bav Auto Heater inlet pipe to prevent catastrophic failure.

Show More Show Less

Bavarian Autosport Water Pipe - E46 E39 Z4 Z3 (M52TU, M54)

10X Entries Into Our F80 M3 Sweepstakes

T#:638085

Part#: 11537502525

In Stock

Sale - Save 20% $ 50.99

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

$ 40.79 USD

Add to Wish List

Qty

Sale - Save 20%

$ 50.99

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

$ 40.79 USD

Add to Wish List

This plastic water pipe is positioned directly underneath your intake manifold. Due to its plastic construction, it is notorious for catastrophic failure. Rapid cooling loss and overheating are both direct results of this failure, posing permanent and lasting damage to the engine.

Replace your cracked/broken coolant pipe with this high-quality Bavarian Autosport component to ensure long-term reliability and perfect fitment.

From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.

Show More Show Less

Bav Auto Expansion Tank Mounting Plate - E46 Non-M w/ Manual Trans ...

10X Entries Into Our F80 M3 Sweepstakes

T#:638088

Part#: 17111436250

In Stock

Sale - Save 20% $ 44.99

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

$ 35.99 USD

Add to Wish List

Qty

Sale - Save 20%

$ 44.99

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

$ 35.99 USD

Add to Wish List

This Bav Auto part is the mounting bracket from the radiator to the expansion tank on an E46 3 series with a Manual Transmission. From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.

Show More Show Less

Water Pump - N52 3.0L

10X Entries Into Our F80 M3 Sweepstakes

T#:599823

Part#: 11517586925

In Stock

Sale - Save 10% $ 299.99

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

$ 269.99 USD

Add to Wish List

Qty

Sale - Save 10%

$ 299.99

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

$ 269.99 USD

Add to Wish List

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. This water pump fits many 2006 and newer BMW 6 cylinder engines, specifically all the BMWs with the N51, N52, N53 engines. You will also need to purchase replacement aluminum screws Part #11510392553 From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty. This water pump fits the following BMWs: 2008-20xx E82 128i 2006-2006 E90 325i sedan, 330i sedan, 325xi sedan, 330xi sedan 2007-2012 E90 328i sedan, 328xi sedan, 328i xDrive sedan 2007-2012 E92 328i coupe, 328xi coupe, 328i xDrive coupe 2007-2012 E93 328i Convertible 2006-2006 E60 525i, 525xi, 530i, 530xi 2007-2010 E60 528i, 528xi, 528i xDrive 2007-2010 E83 X3 3.0i X3 3.0si 2007-20xx E70 X5 3.0si X5 xDrive30i 2006-2008 E85 Z4 3.0si 2009-20xx E89 Z4 sDrive30i

Show More Show Less

Thermostat Assembly

10X Entries Into Our F80 M3 Sweepstakes

T#:15511823

Part#: 11537598865

In Stock

Sale - Save 10% $ 78.99

This product was last offered at the strikethrough price on
08-11-2026

$ 71.09 USD

Add to Wish List

Qty

Sale - Save 10%

$ 78.99

This product was last offered at the strikethrough price on
08-11-2026

$ 71.09 USD

Add to Wish List

Replace your thermostat housing at any signs of leaks or premature failure. Includes housing. Does not include a housing gasket.

BMW N47 N55 Expansion Tank

10X Entries Into Our F80 M3 Sweepstakes

T#:17704781

Part#: 17137642160

In Stock

Sale - Save 20% $ 98.99

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

$ 79.19 USD

Add to Wish List

Qty

Sale - Save 20%

$ 98.99

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

$ 79.19 USD

Add to Wish List

BMW N47 N55 Expansion Tank from Turner Motorsport is a high-quality replacement designed to address issues with cracked or damaged coolant expansion tanks. Engineered for durability and performance, this expansion tank ensures reliable cooling system function.

Durable Construction: Built to withstand high temperatures and pressure, ensuring long-term reliability.
Direct Replacement: Engineered as a precise fit for BMW N47 and N55 engines, making installation straightforward and hassle-free.
Enhanced Cooling Efficiency: Maintains optimal coolant levels and pressure for effective engine cooling.
High-Quality Materials: Manufactured from premium materials to resist cracking and leaks.

Show More Show Less

BMW N20 2.0L Thermostat With Housing

10X Entries Into Our F80 M3 Sweepstakes

T#:18003828

Part#: 11538635689

In Stock

Sale - Save 15% $ 67.99

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

$ 57.99 USD

Add to Wish List

Qty

Sale - Save 15%

$ 67.99

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

$ 57.99 USD

Add to Wish List

BMW N20 2.0L Thermostat With Housing ensures optimal engine performance by maintaining the correct operating temperature. This crucial component regulates coolant flow, preventing issues related to overheating or inadequate cooling. The thermostat plays a vital role in your BMW’s temperature gauge, influencing engine efficiency and longevity.

Precision Temperature Control: Maintains the engine within the ideal temperature range for optimal performance and efficiency.
Complete Assembly: Includes the thermostat and housing, offering a convenient and comprehensive solution for replacements.
Reliable Operation: Helps prevent common issues such as overheating or running too cool by regulating coolant flow effectively.
Enhanced Engine Life: Ensures the engine operates under ideal conditions, extending its lifespan and improving overall performance.
High-Quality Construction: Designed to meet or exceed OEM specifications, providing durability and reliable performance.

Upgrade your BMW with the N20 2.0L Thermostat With Housing to ensure reliable temperature management and enhanced engine performance.

Show More Show Less

Bav Auto Expansion Tank Mounting Plate - E46 Non-M w/ Auto Trans ...

10X Entries Into Our F80 M3 Sweepstakes

T#:638089

Part#: 17111436251

In Stock

Sale - Save 20% $ 45.99

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

$ 36.79 USD

Add to Wish List

Qty

Sale - Save 20%

$ 45.99

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

$ 36.79 USD

Add to Wish List

This Bav Auto part is the mounting bracket from the radiator to the expansion tank on E46 3 series and E85/E86 Z4 with an Automatic Transmission. From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.

Show More Show Less

Bav Auto Coolant Expansion Tank - BMW E90 335d M57 3.0L

10X Entries Into Our F80 M3 Sweepstakes

T#:640493

Part#: 17138570079

In Stock

Sale - Save 20% $ 78.99

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

$ 63.19 USD

Add to Wish List

Qty

Sale - Save 20%

$ 78.99

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

$ 63.19 USD

Add to Wish List

Replace your damaged expansion tank to prevent coolant loss or potential overheating issues. From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.

Show More Show Less

Water Pump - N20 N26

10X Entries Into Our F80 M3 Sweepstakes

T#:29666093

Part#: 11518635089

In Stock

Sale - Save 20% $ 343.99

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

$ 275.19 USD

Add to Wish List

Qty

Sale - Save 20%

$ 343.99

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

$ 275.19 USD

Add to Wish List

A failing water pump can show early warning signs like coolant leaks or a whining noise from the engine bay—but with electric water pumps, failure can be sudden, often with no warning beyond rapid overheating.

If you suspect your water pump is on its way out, prompt replacement is critical to avoid engine damage. Stay alert to any changes in cooling system performance.

Note: Aluminum mounting bolts are single-use and must be replaced during installation.

Show More Show Less

BMW N20 2.0L Turbo Supply Cooling Line

10X Entries Into Our F80 M3 Sweepstakes

T#:17704760

Part#: 11538663516

In Stock

Sale - Save 20% $ 46.99

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

$ 37.59 USD

Add to Wish List

Qty

Sale - Save 20%

$ 46.99

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

$ 37.59 USD

Add to Wish List

BMW N20 2.0L Turbo Supply Cooling Line is a crucial component designed to ensure optimal cooling for the turbocharger in BMW vehicles equipped with the N20 2.0L turbo engine. This high-quality cooling line maintains proper coolant flow to the turbo, preventing overheating and ensuring reliable performance.

Optimal Cooling: Effectively cools the turbocharger to prevent overheating and maintain performance.
Durable Construction: Built with high-quality materials for long-lasting reliability.
Precise Fitment: Designed specifically for BMW N20 2.0L turbo engines.
Enhanced Performance: Helps in sustaining the turbo's efficiency and longevity.
Easy Installation: Direct replacement part for a hassle-free installation.

Maintain the efficiency and longevity of your BMW’s turbocharger with this essential cooling line, designed for superior performance and durability.

Show More Show Less

URO Thermostat - E60, E61, E82, E83, E88, E90, E91, E92, E93, Z4 ...

2X Entries Into Our F80 M3 Sweepstakes

T#:591812

Part#: 11537549476

In Stock

Sale - Save 5% $ 74.99

This product was last offered at the strikethrough price on
09-29-2026

$ 71.24 USD

Add to Wish List

Qty

Sale - Save 5%

$ 74.99

This product was last offered at the strikethrough price on
09-29-2026

$ 71.24 USD

Add to Wish List

Restore proper function to your cooling system

Bav Auto Coolant Expansion Tank - With Level Sensor - E70 X5, E71 X6 ...

10X Entries Into Our F80 M3 Sweepstakes

T#:638093

Part#: 17138621092

In Stock

Sale - Save 20% $ 60.99

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

$ 48.79 USD

Add to Wish List

Qty

Sale - Save 20%

$ 60.99

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

$ 48.79 USD

Add to Wish List

Replace your old expansion tank to prevent potential failure or leaks. Includes a brand new coolant level sensor.

Thermostat With Housing

10X Entries Into Our F80 M3 Sweepstakes

T#:18003829

Part#: 11517805811

In Stock

Sale - Save 20% $ 58.99

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

$ 47.19 USD

Add to Wish List

Qty

Sale - Save 20%

$ 58.99

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

$ 47.19 USD

Add to Wish List

Aluminum Water Pump Pulley - 104MM

2X Entries Into Our F80 M3 Sweepstakes

T#:374330

Part#: 11511736910

In Stock

Sale - Save 22% $ 32.99

This product was last offered at the strikethrough price on
05-14-2026

$ 25.78 USD

Add to Wish List

Qty

Sale - Save 22%

$ 32.99

This product was last offered at the strikethrough price on
05-14-2026

$ 25.78 USD

Add to Wish List

Direct replacement durable aluminum pulley

N62 Engine Collapsible Cooling Pipe - E60 E63 E65 E53 E70

2X Entries Into Our F80 M3 Sweepstakes

T#:338249

Part#: 11141439975R

In Stock

Sale - Save 10% $ 300.99

This product was last offered at the strikethrough price on
09-22-2026

Starting at $ 270.99 USD

Add to Wish List

Sale - Save 10%

$ 300.99

This product was last offered at the strikethrough price on
09-22-2026

Starting at $ 270.99 USD

Add to Wish List

Has your BMW's with the N62 V8 engine developed a coolant leak at the front of the engine from the timing cover weep hole? If so the it is likely that the coolant transfer pipe seal, located below the intake manifold has developed a leak. Normally, replacing the seal on this pipe would require almost 40 hours of labor and involve removing the entire engine from the car, then removing the cylinder heads, and timing covers. With this new collapsible pipe this repair can be accomplished in under 10 hours! This solution will save you or your mechanic from a bunch of headaches and get your V8 back on the road leak free!

With more than 100 years in the industry, Elring is one of the oldest names in the European autoparts segment. Delivering OE-quality you can rest assured the job will be done right the first time.

video: N62 Cooling Pipe Replacement

Supplement Gasket Kit Parts List

(click to expand)

BMW p/nQtyDescription

115317100481Rear Engine Block O-ring,

115175077171Heat Pipe w O-ring

115175085351Water Pump Gasket

115114399761Valley Pan Pipe Pump

111475072781Valley Pan w Gasket

116175211812Intake Manifold Gasket

071199035962Camshaft Adjuster O-ring

123114399881Alternator Feed Pipe

750il gasket kit deletes 11617521181 and 07119903596 and adds - 8 - 11617537999 profile gaskets

This item fits the following BMWs:
2004-2010 E60 BMW 545i 550i
2004-2010 E63 BMW 645ci 650i
2002-2008 E65 BMW 745i 745li 750i 750li
2004-2006 E53 BMW X5 4.4i X5 4.8is
2007-2013 E70 BMW X5 4.8i xDrive48i

Show More Show Less

Bav Auto Expansion Tank Cap - E36 E46 E34 E39 E32 E38 E65 X3 X5 Z4 ...

10X Entries Into Our F80 M3 Sweepstakes

T#:640208

Part#: 17117639022

In Stock

Sale - Save 15% $ 13.99

This product was last offered at the strikethrough price on
06-03-2026

$ 11.89 USD

Add to Wish List

Qty

Sale - Save 15%

$ 13.99

This product was last offered at the strikethrough price on
06-03-2026

$ 11.89 USD

Add to Wish List

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. From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.

Show More Show Less

Water Connection Pipe

10X Entries Into Our F80 M3 Sweepstakes

T#:15511839

Part#: 17111707817

In Stock

Sale - Save 20% $ 18.99

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

$ 15.19 USD

Add to Wish List

Qty

Sale - Save 20%

$ 18.99

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

$ 15.19 USD

Add to Wish List

Connects the radiator to the expansion tank

Bav Auto Coolant Level Sensor - BMW E36 E39 M50/52 S50/52

10X Entries Into Our F80 M3 Sweepstakes

T#:639793

Part#: 61318360855

In Stock

Sale - Save 19% $ 20.99

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

$ 16.99 USD

Add to Wish List

Qty

Sale - Save 19%

$ 20.99

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

$ 16.99 USD

Add to Wish List

This is the sensor / sending unit that notifies the computer if your coolant level is low. When this fails, it can give a false indication of low coolant -- or worse, not inform you of a low coolant situation that could potentially cause overheating. From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.

Show More Show Less

Bav Auto Coolant Temperature Sensor - M52/S52, M62, M73, M54, S62 ...

10X Entries Into Our F80 M3 Sweepstakes

T#:639828

Part#: 13621703993

Ships on Oct 20, 2026

Sale - Save 20% $ 20.99

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

$ 16.79 USD

Add to Wish List

Qty

Sale - Save 20%

$ 20.99

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

$ 16.79 USD

Add to Wish List

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. From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.

Show More Show Less

Bav Auto Temperature Sensor - BMW E39 E46 E9X E60 F01/02

10X Entries Into Our F80 M3 Sweepstakes

T#:639833

Part#: 13621433076

In Stock

Sale - Save 20% $ 14.99

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

$ 11.99 USD

Add to Wish List

Qty

Sale - Save 20%

$ 14.99

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

$ 11.99 USD

Add to Wish List

This is the coolant temperature sensor used in many BMW models from the late-1990s to the mid-2010s. 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. From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.

Show More Show Less

Bav Auto Coolant Expansion Tank - E60 E61 E63 E64 M54 N52 N62 ...

10X Entries Into Our F80 M3 Sweepstakes

T#:640491

Part#: 17137542986

Special Order: No Guaranteed ETA

Sale - Save 10% $ 54.99

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

$ 49.49 USD

Add to Wish List

Qty

Sale - Save 10%

$ 54.99

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

$ 49.49 USD

Add to Wish List

This Bav Auto cooling system expansion tank/coolant reservoir is a direct replacement for the factory unit. Replace your cracked or leaking radiator expansion tank today. From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.

Show More Show Less

Select Vehicle

Purpose

Category

Home

Cooling

Brand

View All Brands

Price

Special Offers

Shipping