BMW Cooling System Parts & Accessories for BMW E34 M5 S38 3.5L

Clear BMW chassis

Please ensure your correct model is selected

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:

Mahle-Behr - Corporate Logo
T#:340540
Part#: 11527831619
Ships in 1 Business Day
$ 298.99

This product was last offered at the strikethrough price on
08-17-2026

$ 256.99 USD
Free Shipping
$ 256.99 USD
Free Shipping

This OEM Hella/Mahle-Behr engine fan clutch fits BMW E46 M3, Z3 M Roadster, M Coupe 2001-2002, E34 535i & M5, and E32 735i 735il. Made to the same or higher standards of quality as the genuine part, ensuring proper fan control and cooling. Failed fan clutches can result in overheating due to the fan not spinning fast enough to deal with excess heat or can cause poor engine performance when a clutch has locked up causing the fan to be fully engaged permanently.

Hella is a premium manufacturer that supplies automotive parts to numerous car brands across the world. Everything from electrical to mechanical genuine parts have been made and supplied directly to BMW before the vehicles ever leave the production floor. Their high quality, long lasting parts have made them a trusted brand chosen to help keep your BMW on the road for many years to come.

As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts.  All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!

This item fits the following BMWs:
2001-2006 E46 BMW M3
1989-1993 E34 BMW 535i M5
1988-1992 E32 BMW 735i 735il
2001-2002 Z3 BMW M Roadster M Roadster

Show More Show Less
Genuine BMW Coolant Temperature Sensor
For vehicles with production date up to 10/1992
Genuine BMW - Corporate Logo
T#:376804
Part#: 13621709967
Ships in 2 Business Days
6% off MSRP $ 82.99

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

$ 77.99 USD
Free Shipping
6% off MSRP
$ 82.99

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

$ 77.99 USD
Free Shipping
Genuine BMW - Corporate Logo
T#:360697
Part#: 11537835558
In Stock
3% off MSRP $ 147.99

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

$ 142.99 USD
Free Shipping
3% off MSRP
$ 147.99

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

$ 142.99 USD
Free Shipping

Genuine BMW - Corporate Logo
T#:360662
Part#: 11521712058
Back Ordered
3% off MSRP $ 104.99

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

$ 101.99 USD
Free Shipping
3% off MSRP
$ 104.99

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

$ 101.99 USD
Free Shipping

Genuine BMW - Corporate Logo
T#:367918
Part#: 17121712736
In Stock
Sale - Save 8% $ 77.99

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

$ 71.66 USD
Free Shipping
Sale - Save 8%
$ 77.99

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

$ 71.66 USD
Free Shipping
Genuine BMW - Corporate Logo
T#:338205
Part#: 64118390063
Ships in 1-2 days
Starting at $ 304.99 USD
Free Shipping
Starting at $ 304.99 USD
Free Shipping
The auxiliary water pump helps to move coolant through the heating system. Sometime the unit can develop leaks or the pump itself may fail.

When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

This item fits the following BMWs:
3/1990-1995 E34 BMW 525i 530i 535i 540i M5
1988-1994 E32 BMW 735i 735il 740i 740il 750il
1990-1999 E31 BMW 840i 840ci 850i 850ci 850csi
Show More Show Less

Genuine BMW - Corporate Logo
T#:367654
Part#: 11527831619
Ships in 1-2 days
3% off MSRP $ 401.99

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

$ 388.99 USD
Free Shipping
3% off MSRP
$ 401.99

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

$ 388.99 USD
Free Shipping

Ensure optimal engine cooling for your BMW with this Fan Clutch, designed to adapt the fan speed based on the engine's rotational speed. Perfect for city driving and traffic, this fan clutch minimizes rotational load and drag when cooling is not critical.

  • Compatible with various BMW models
  • Adjusts fan speed based on engine rotational speed
  • Ideal for city driving and traffic conditions
  • Reduces rotational load and drag when cooling is not critical
  • Enhances engine cooling efficiency
  • Suitable for vehicles with mechanical fans
  • Easy solution for vehicles running hot in traffic

Upgrade your BMW's cooling system with this Fan Clutch, ensuring a cool and efficient engine performance, especially during city driving and traffic stops.

Show More Show Less
Genuine BMW - Corporate Logo
T#:466229
Part#: 64118372524
Ships in 1-2 days
4% off MSRP $ 111.99

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

$ 107.99 USD
Free Shipping
4% off MSRP
$ 111.99

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

$ 107.99 USD
Free Shipping

Genuine BMW - Corporate Logo
T#:19462
Part#: 17112227101
Ships in 2 Business Days
3% off MSRP $ 108.99

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

$ 105.99 USD
Free Shipping
3% off MSRP
$ 108.99

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

$ 105.99 USD
Free Shipping


Genuine BMW Fan Shroud - A=610mm
This item fits the following BMW Chassis:
E34 M5,E34

Fits BMW Engines including:
M30,S38


Genuine BMW - Corporate Logo
T#:45798
Part#: 17112227091
Ships in 1-2 days
5% off MSRP $ 215.99

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

$ 205.99 USD
Free Shipping
5% off MSRP
$ 215.99

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

$ 205.99 USD
Free Shipping
This Genuine BMW radiator expansion tank / cooling system reservoir is a direct replacement for the factory unit. If your expansion tank is leaking or cracked replace it today with this original BMW replacement part. Expansion tank cap and coolant level sensor sold separately.

When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

This item fits the following BMWs:
1991-1993 E34 BMW M5 3.6 liter
Show More Show Less
Genuine BMW - Corporate Logo
T#:62712
Part#: 34321160492
Special Order: No Guaranteed ETA
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
Free Shipping
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
Free Shipping


Genuine BMW Expansion Tank - Girling
This item fits the following BMW Chassis:
E34 M5,E34

Genuine BMW - Corporate Logo
T#:368718
Part#: 64211384763
Ships in 5 Business Days
3% off MSRP $ 109.99

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

$ 106.99 USD
Free Shipping
3% off MSRP
$ 109.99

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

$ 106.99 USD
Free Shipping