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BMW Cooling System Parts & Accessories for BMW E39 M5 S62 5.0L

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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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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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Auxiliary Fan Switch O-Ring

2X Entries Into Our F80 M3 Sweepstakes

T#:377077

Part#: 13621433077S

In Stock

$ 0.88 USD

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$ 0.88 USD

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Now you can just replace the o-ring instead of the whole switch

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

T#:33603

Part#: 11281435115

Ships in 1-2 days

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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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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OEM Nissens Air Conditioning Pusher Fan - E39 BMW 528i 540i M5 (up to...

For vehicles with production date up to 09/1998

For vehicles with production date up to 09/1998

T#:591464

Part#: 64548380780

Ships in 7 Business Days

$ 295.99 USD

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$ 295.99 USD

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This is the fan that turns on when the air conditioning is activated electronically. It’s not driven by the belt and it pushes air through the condenser. If it breaks, it might be an electrical issue that usually occurs in the motor within the fan, as it will fail to engage. There is also a chance that the blades might get damaged as well. No matter how your fan got damaged, be sure to replace it to keep air circulating evenly.

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Radiator Mounting Kit

T#:55317656

Part#: 1711173RMKT

Ships in 1-2 days

$ 59.16

This product was last offered at the strikethrough price on
08-24-2026

$ 59.02 USD

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$ 59.02 USD

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This Genuine BMW Radiator Mounting Kit provides the absolute best option for restoring the factory anchoring system on your chassis.

Bracket F Left Radiator Support - E38, E39

T#:70041

Part#: 41118125049

In Stock

6% off MSRP $ 15.99

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

$ 14.99 USD

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6% off MSRP

$ 15.99

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

$ 14.99 USD

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Genuine BMW Bracket F Left Radiator Support
This item fits the following BMW Chassis:
E39 M5,E38,E39

Genuine BMW Heater Hose - E39 540i

T#:368730

Part#: 64218391013

Ships in 1-2 days

2% off MSRP $ 88.99

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

$ 86.99 USD

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2% off MSRP

$ 88.99

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

$ 86.99 USD

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Bracket Pressure Pipe Airconditioner - E39, E53, E82, E88, E90, E91, ...

T#:152356

Part#: 64538369549

Ships in 4 Business Days

$ 6.99 USD

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$ 6.99 USD

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Genuine BMW Bracket Pressure Pipe Airconditioner
This item fits the following BMW Chassis:
E39 M5,E53 48IS,E39,E53 X5,E82,E85 Z4,E90,E92,E93

Genuine BMW Radiator - E52 Z8 E39 M5

T#:360738

Part#: 17111436062

Ships in 4 Business Days

6% off MSRP $ 756.99

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

$ 713.99 USD

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6% off MSRP

$ 756.99

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

$ 713.99 USD

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Hose Clamp - 40mm-60mm

10X Entries Into Our F80 M3 Sweepstakes

T#:5227

Part#: 040-60T

Ships in 5 Business Days

$ 3.99 USD

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$ 3.99 USD

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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.

Features:

9mm band width

6mm hex & slotted head

Smooth inside of band = optimal hose protection

OEM

430 Stainless steel band and housing with zinc plated steel screw

Asymmetric housing = even distribution of forces and prevents tilting of the clamp when tightening

Screw support = ease of assembly due to the safe guidance of the emerging band

Short housing saddle = even contact pressure = improved efficiency

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O-RING

T#:580584

Part#: C32348

Ships in 7 Business Days

$ 3.99

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

$ 2.99 USD

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$ 2.99 USD

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Lower Water Valve Bracket - E39

T#:71313

Part#: 41148200043

Ships in 7 Business Days

6% off MSRP $ 17.99

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

$ 16.99 USD

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6% off MSRP

$ 17.99

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

$ 16.99 USD

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Genuine BMW Lower Water Valve/Add.Water Pump Bracket
This item fits the following BMW Chassis:
E39 M5,E39

Rubber Mount

2X Entries Into Our F80 M3 Sweepstakes

T#:362393

Part#: 17111737704

Ships on Oct 26, 2026

$ 7.99 USD

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$ 7.99 USD

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Rubber lower mount for your radiator

Electric Auxiliary Fan - E39 1999-2003

We Price Match - Give Us A Call or Chat!

T#:3121418

Part#: 64546921395

Special Order: No Guaranteed ETA

$ 397.99 USD

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$ 397.99 USD

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This electric auxiliary fan for BMW E39 525i 528i 530i 540i M5 1999-2003 mounts in front of the radiator and is designed to push air through the A/C Condenser and main radiator. It provides additional cooling for when the car is in traffic. It is a common failure item. If your engine temps are creeping up or if your A/C isn't blowing cold this could be the cause.

This item fits the following BMWs:
1999-2003 E39 BMW 525i 528i 530i 540i M5

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Auxillary Fan Switch

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

T#:4934936

Part#: 3148210000

Ships on Oct 19, 2026

$ 18.99 USD

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$ 18.99 USD

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The auxiliary fan switch activates the auxiliary cooling fan to provide additional cooling under high heat loads, and when the car is stationary. Also known as the coolant temperature sending unit, comes with related o-ring

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Fluid Level Sensor

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

T#:5973204

Part#: 17117546548

Ships on Oct 19, 2026

$ 13.99 USD

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$ 13.99 USD

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MEYLE-ORIGINAL: True to OE fluid level sensor. Used in multiple locations. Wulf Gaertner Autoparts AG manufactures and markets automotive spare parts under its MEYLE brand. Since its foundation in 1958, Wulf Gaertner Autoparts has been an owner-operated, unlisted family business on the aftermarket scene. Since 1995, Wulf Gaertner Autoparts AG has been manufacturing and trading under its MEYLE brand. They pride themselves on top-grade quality-tested spare parts for passenger cars, vans and commercial vehicles. Comparable OE Cross Reference - 17117546548

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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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Rein Coolant Hose - E39

2X Entries Into Our F80 M3 Sweepstakes

T#:379777

Part#: 64218391003

Special Order: No Guaranteed ETA

$ 31.99 USD

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$ 31.99 USD

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

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O-Ring - Coolant Pipe - BMW

2X Entries Into Our F80 M3 Sweepstakes

T#:14949060

Part#: 11411304178

Back Ordered

$ 3.99

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

$ 2.99 USD

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$ 2.99 USD

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Over time, o-rings will wear and eventually fail, leading to leaks and other issues. Avoid this by replacing them with new examples!

Auxiliary Fan Switch

2X Entries Into Our F80 M3 Sweepstakes

T#:376847

Part#: 13621433077

Back Ordered

$ 10.99 USD

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$ 10.99 USD

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Comes with related o-ring

URO Air Temperature Sensor - BMW X5 M5 525i 528i 530i 540i

2X Entries Into Our F80 M3 Sweepstakes

T#:592644

Part#: 64118391392

Back Ordered

$ 7.99 USD

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$ 7.99 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.

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Gates Coolant Hose - E39

T#:596352

Part#: 64218387521

Back Ordered

$ 64.99 USD

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$ 64.99 USD

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