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BMW Cooling System Parts & Accessories for BMW 8 Series E31 (1991-1997)

Clear BMW chassis

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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Genuine BMW Coolant Temperature Sensor - E31 850Ci 850CSi E32 750iL ...

T#:42618

Part#: 13621707366

Special Order: No Guaranteed ETA

6% off MSRP $ 240.99

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

$ 226.99 USD

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6% off MSRP

$ 240.99

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

$ 226.99 USD

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Genuine BMW Temperature Sensor, Water - 3-Pol-2500-Ohm

Fits BMW Engines including:
M70,S70

Engine Coolant Thermostat Housing - E31, E32

T#:35887

Part#: 11531710493

Ships in 6 Business Days

3% off MSRP $ 74.99

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

$ 72.99 USD

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3% off MSRP

$ 74.99

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

$ 72.99 USD

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Genuine BMW COVER
Fits BMW Engines including:
M70,S70

Meyle Radiator Fan Clutch - E31, E32, E34, E38, E39

5X Entries Into Our F80 M3 Sweepstakes
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T#:591319

Part#: 11527502804

In Stock

$ 101.99 USD

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$ 101.99 USD

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OEM replacement

Genuine BMW Coolant Transfer Pipe

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

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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

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

Fits BMW Engines including:
M62

Wahler Thermostat - E31, E32

T#:579650

Part#: 4516.85

Back Ordered

$ 34.99 USD

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$ 34.99 USD

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Stop your overheating problem.

Genuine BMW Idler Pulley Bolt - E53 X5 M62 E31 840Ci E38 740i 740iL ...

T#:33603

Part#: 11281435115

Ships in 1 day

8% off MSRP $ 12.99

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

$ 11.99 USD

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8% off MSRP

$ 12.99

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

$ 11.99 USD

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Genuine BMW Fillister-Head Screw - M8X80
This item fits the following BMW Chassis:
E39 M5,E38,E39,E53 X5 X5

Fits BMW Engines including:
M62,S62

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Meyle Expansion Tank Cap

5X Entries Into Our F80 M3 Sweepstakes
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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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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.

Coolant Temperature Sensor - E36, E34, E32, E38, E31

T#:7172

Part#: 12621747281

In Stock

$ 13.99 USD

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$ 13.99 USD

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This is the engine coolant temperature sensor that is mounted into the cylinder head.

Genuine BMW Isa Screw - 07129905494

T#:28891

Part#: 07129905494

In Stock

5% off MSRP $ 7.74

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

$ 7.33 USD

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5% off MSRP

$ 7.74

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

$ 7.33 USD

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Genuine water pump hardware. M6x16-8.8. 6 of these screws are found in association with the water pump

Bremmen Coolant Bleeder Screw - BMW E30 E36 E38 E39 E46 E83 E90 Z4 ...

10X Entries Into Our F80 M3 Sweepstakes

T#:640140

Part#: 17111712788

Ships on Jan 8, 2027

Sale - Save 39% $ 3.99

This product was last offered at the strikethrough price on
09-02-2026

$ 2.44 USD

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Sale - Save 39%

$ 3.99

This product was last offered at the strikethrough price on
09-02-2026

$ 2.44 USD

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Plastic bleeder screw for cooling system is used to bleed air that would otherwise create an air pocket and lead to overheating. Includes o-ring seal.

Gasket Ring

A18X22

T#:6495

Part#: 07119963300

In Stock

$ 1.99 USD

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$ 1.99 USD

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GENUINE BMW GASKET RING 07119963300

Rein Expansion Tank Hose - E31, E38, E39

2X Entries Into Our F80 M3 Sweepstakes

T#:375756

Part#: 11531741404

In Stock

$ 8.45 USD

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$ 8.45 USD

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Connects the expansion tank to the radiator

URO Coolant Temperature Sensor - BMW M44 M52 M62 M73 M54 S62 S50 S52 ...

Located on the water pump housing

2X Entries Into Our F80 M3 Sweepstakes

T#:639497

Part#: 13621703993

In Stock

$ 12.99 USD

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$ 12.99 USD

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URO Parts is one of the leading manufacturers of high quality direct replacement aftermarket components, covering a wide range of makes and models. All of their replacement parts are manufactured to ISO 9000 certification standards, so you can expect long lasting performance from URO Parts. 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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Rein Coolant Bleeder Screw CHW1575 - Priced Each

2X Entries Into Our F80 M3 Sweepstakes

T#:591955

Part#: 17111712788

In Stock

$ 4.99 USD

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$ 4.99 USD

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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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BMW Expanding Rivet

T#:7436

Part#: 17111712963

In Stock

$ 1.99 USD

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$ 1.99 USD

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The most common use for this rivet is to secure the radiator fan shroud to the radiator. This rivet can also be used on a wide variety of other applications as well.

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.

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FAE Coolant Temperature Sensor - E31, E36, E38, E39, E52, E53, Z3 ...

Located on the water pump housing

T#:374002

Part#: 13621703993

Ships in 5 Business Days

$ 15.99 USD

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$ 15.99 USD

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Monitors coolant temperature

BMW Antifreeze Coolant - 1 Liter Bottle

T#:11526

Part#: 82142209769

In Stock

$ 10.60

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

$ 10.57 USD

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$ 10.57 USD

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This 1 liter bottle is perfect for topping of the coolant in your BMW. This is The use of Original BMW Anti-Freeze/Coolant will ensure sufficient cooling in summer and protection against freeze-ups in winter. BMW Antifreeze/Coolant will also guard your vehicle's various engine components against corrosion. BMW Anti-Freeze/ Coolant will prevent excessive silicate gel precipitation, which may cause plugging of the cooling system and lead to more extensive repairs.

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Genuine BMW Coolant Bleeder Screw 17111712788

T#:7432

Part#: 17111712788

In Stock

$ 5.94 USD

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$ 5.94 USD

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This is the Genuine BMW Coolant bleeder screw. We recommend a heavy duty Aluminum replacement from ECS Tuning if you do not want to replace this part again when it fails.

Genuine BMW Vent Screw
This item fits the following BMW Chassis:
E36 M3,E46 M3,E85 Z4M,E53 48IS,E30,E34,E36,E38,E39,E46,E53 X5 X5,E83 X3,E85 Z4,E86 Z4,E90

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BMW Brass Coolant Bleeder Screw - Priced Each

2X Entries Into Our F80 M3 Sweepstakes

T#:587673

Part#: 17111712788PRM

In Stock

$ 5.35 USD

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$ 5.35 USD

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Having an operational bleeder screw for your coolant system assures that when service is performed, all air pockets are removed. Having air pockets in your coolant system prevents your system from functioning properly. Your heat may not work as well and there is the potential for engine overheating if the air pocket is trapped behind the thermostat. Be sure that all of the air is bled out of your system with a new bleeder screw.

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OEM Rein Expansion Tank Cap - BMW E32 E34 E36 E38 E39 E46 & More ...

2X Entries Into Our F80 M3 Sweepstakes

T#:340541

Part#: 17111742231

Ships on Oct 19, 2026

$ 17.99

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

$ 14.99 USD

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$ 14.99 USD

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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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Coolant Temperature Sender

T#:586992

Part#: 12621747281

Ships in 1 Business Day

$ 23.99

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

$ 19.99 USD

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$ 19.99 USD

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OEM Behr Coolant Expansion Tank Cap 2.0 Bar - E36 E46 E34 E39 E32 E38...

T#:2766

Part#: 17111742231

In Stock

$ 20.99

This product was last offered at the strikethrough price on
09-10-2026

$ 19.99 USD

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$ 19.99 USD

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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.

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

This item fits the following BMWs:
1990-1991 E30 BMW 318i 318is 318ic
1992-1998 E36 BMW 318i 318is 318ic 323is 323ic 325i 325is 325ic 328i 328is M3
1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi M3
1989-1995 E34 BMW 530i 535i 540i M5
1991-1995 E34 BMW 525i
1997-2003 E39 BMW 525i 528i 530i 540i M5
1989-1994 E32 BMW 735i 735il 740i 740il 750il
1995-2001 E38 BMW 740i 740il 750il
2002-2008 E65 BMW 745i 745li 750i 750li 760i 760li
1990-1998 E31 BMW 840i 840ci 850i 850ci 850csi
2004-2011 E83 BMW X3 2.5i X3 3.0i X3 3.0si
2000-2006 E53 BMW X5 30.0i X5 4.4i X5 4.6is X5 4.8is
1996-2002 Z3 BMW Z3 1.9 Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i M Coupe M Roadster
2003-2008 E85 BMW Z4 2.5i Z4 3.0i Z4 3.0si M Roadster M Coupe
2000-2003 E52 BMW Z8 Z8 Alpina
2007+ E90 BMW 335i & 335xi

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Febi Coolant Level Sensor - E31, E38, E39

We Price Match - Give Us A Call or Chat!

T#:341632

Part#: 61318360876

Ships in 1-2 days

$ 14.99 USD

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$ 14.99 USD

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Monitors the coolant level in the expansion tank

Genuine BMW Hose Clamp 07129952104

T#:6533

Part#: 07129952104

In Stock

$ 3.99 USD

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Qty

$ 3.99 USD

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GENUINE BMW HOSE CLAMP 07129952104

Water Temperature Sensor

Located in the water accumilator

2X Entries Into Our F80 M3 Sweepstakes

T#:372926

Part#: 12621288158

Ships in 1 Business Day

$ 6.99 USD

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$ 6.99 USD

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Replace the sensor to get your gauge working properly again.

Coolant Temperature Sender - 2 Pin

Located in the water accumulator

T#:379619

Part#: 12621747281

Ships in 3 Business Days

$ 8.99 USD

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$ 8.99 USD

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Meistersatz Water Temperature Sensor - E31, E32, E34, E38

Located in the water accumilator

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 Level Switch - E31 E38 E39 Z8

2X Entries Into Our F80 M3 Sweepstakes

T#:20203

Part#: 61318360876

In Stock

$ 12.99

This product was last offered at the strikethrough price on
04-10-2026

$ 10.99 USD

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$ 10.99 USD

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This is the radiator coolant level sensor that mounts into the bottom of the cooling system expansion tank. With more than 4,000 European vehicle replacement parts, URO is no stranger to the market. Superior metal stock and extremely strict quality control are at the forefront of URO’s agenda and it shows as they become the OE supplier for more and more car companies every single day.

With more than 4,000 European vehicle replacement parts, URO is no stranger to the market. Superior metal stock and extremely strict quality control are at the forefront of URO’s agenda and it shows as they become the OE supplier for more and more car companies every single day.

This item fits the following BMWs:
1999-2000 E39 BMW 528i 540i
2001-2003 E39 BMW 525i 530i 540i
1995-2001 E38 BMW 740i 740il 750il
1990-1998 E31 BMW 840i 840ci
2000-2003 E52 BMW Z8 Roadster

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Nissens Radiator - E31 E32 E34

T#:596366

Part#: 17112242138

Ships in 1 Business Day

$ 239.99

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

$ 232.99 USD

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$ 232.99 USD

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Water Temperature Sensor

T#:596874

Part#: 12621288158

Ships in 1 day

$ 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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Genuine BMW Thermostat Housing - M60

T#:367686

Part#: 11531720173

Ships in 1 day

3% off MSRP $ 29.99

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

$ 28.99 USD

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3% off MSRP

$ 29.99

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

$ 28.99 USD

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Adjust-Lever - E31, E38, E39, E53

T#:33632

Part#: 11281745904

Ships in 1 day

4% off MSRP $ 56.99

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

$ 54.99 USD

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4% off MSRP

$ 56.99

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

$ 54.99 USD

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

Fits BMW Engines including:
M62

Auxiliary Fan Assembly

T#:556566

Part#: 661230

Ships in 1 day

$ 166.99

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

$ 161.99 USD

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Qty

$ 161.99 USD

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Radiator Fan Clutch

10X Entries Into Our F80 M3 Sweepstakes

T#:56507828

Part#: 11527502804

Ships in 1-3 days

$ 85.99 USD

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Qty

$ 85.99 USD

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Hella Coolant Temperature Sender - E31, E32, E34, E36, E38

Located in the water accumulator

T#:580139

Part#: 9107471

Ships in 3 Business Days

$ 15.99 USD

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Qty

$ 15.99 USD

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2 pin

O-RING

T#:580584

Part#: C32348

Ships in 6 Business Days

$ 3.99

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

$ 2.99 USD

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Qty

$ 2.99 USD

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Radiator Bracket - Front - E31

T#:45753

Part#: 17111723256

Ships in 5 Business Days

$ 14.99 USD

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Qty

$ 14.99 USD

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Genuine BMW BRACKET F.RADIATOR
Fits BMW Engines including:
M60,M62,M70,M73,S70

Genuine BMW Pipe - 11531733350

T#:35921

Part#: 11531733350

Ships in 6 Business Days

3% off MSRP $ 382.99

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

$ 370.99 USD

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Qty

3% off MSRP

$ 382.99

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

$ 370.99 USD

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Your coolant system plays a vital role in keeping your engine running at optimal temps and if any component fails or is wearing, it could lead to catastrophic failure! Keep your coolant system in prime shape and replace wearing components!

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Expansion Tank - E31

Ate

T#:63355

Part#: 34331160304

Ships in 6 Business Days

3% off MSRP $ 211.99

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

$ 204.99 USD

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Qty

3% off MSRP

$ 211.99

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

$ 204.99 USD

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Genuine BMW Expansion Tank - Ate

Victor Reinz Water Pump Gasket - E31, E32, E34, E38, E39, E53 ...

T#:376106

Part#: 11511731372

Ships in 6 Business Days

$ 7.99

This product was last offered at the strikethrough price on
07-23-2026

$ 7.13 USD

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$ 7.13 USD

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Should be replaced each time the water pump is removed

Cooling Fan Assembly

We Price Match - Give Us A Call or Chat!

T#:31291056

Part#: 64541392913

Ships on Oct 19, 2026

$ 161.99 USD

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$ 161.99 USD

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FAE Water Temperature Sensor - E31, E32, E34, E38

Located in the water accumilator

T#:7171

Part#: 12621288158

Ships on Oct 26, 2026

$ 16.99 USD

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$ 16.99 USD

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ENGINE ELECTRICAL TEMPERATURE SENSOR, WATER 12621288158

Elring Thermostat Gasket - BMW M60 M62 M70 S70

2X Entries Into Our F80 M3 Sweepstakes

T#:45005599

Part#: 818.437

Special Order: No Guaranteed ETA

$ 2.99 USD

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$ 2.99 USD

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This rubber gasket seals the junction between the thermostat and water pump Measurements: 4.0x76.5mm

Febi Radiator Fan Clutch - E31, E32, E34, E38, E39

We Price Match - Give Us A Call or Chat!

T#:341629

Part#: 11527502804

Special Order: No Guaranteed ETA

$ 109.99 USD

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$ 109.99 USD

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Quality aftermarket replacement

Febi Coolant Expansion Tank - E31, E38, E39

We Price Match - Give Us A Call or Chat!

T#:381841

Part#: 17111741167

Special Order: No Guaranteed ETA

$ 90.99 USD

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Qty

$ 90.99 USD

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Replace your cracked or faded expansion tank.

Febi Expansion Tank Hose - E31, E38, E39

We Price Match - Give Us A Call or Chat!

T#:6969

Part#: 11531741404

Special Order: No Guaranteed ETA

$ 22.99 USD

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$ 22.99 USD

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ENGINE WATER HOSE 11531741404

Coolant Temperature Sensor

Located on water pump housing

5X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

T#:594615

Part#: 13621703993

Ships on Oct 19, 2026

$ 18.99 USD

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$ 18.99 USD

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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
We Price Match - Give Us A Call or Chat!

T#:594511

Part#: 61318360876

Ships on Oct 19, 2026

$ 27.99 USD

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$ 27.99 USD

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Monitors the coolant level in the expansion tank. This sensor is critical in keeping tabs of your cooling systems health.

BMW Coolant Expansion Tank With Cap

2X Entries Into Our F80 M3 Sweepstakes

T#:46616009

Part#: EPK0013

In Stock at Vendor

$ 71.99 USD

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Qty

$ 71.99 USD

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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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Febi Coolant Temperature Sender - E31, E32, E34, E36, E38

Located in the water accumulator

We Price Match - Give Us A Call or Chat!

T#:382428

Part#: 12621747281

In Stock

$ 20.99 USD

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Qty

$ 20.99 USD

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