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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.

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Behr Radiator - E36

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:1196128

Part#: 17111723784

In Stock at Vendor

$ 298.35 USD

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$ 298.35 USD

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Brand new radiator equivalent to OE

Automatic Transmission Cooler - E36 Z3 E34

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:2069

Part#: 17201728770

Ships in 1 Business Day

$ 207.15

This product was last offered at the strikethrough price on
05-11-2026

$ 201.97 USD

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$ 201.97 USD

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This transmission fluid/oil cooler fits E36 318i 318is 318ti 323i 323is 325i 325is 328i 328is M3, E34 525i 530i 1993-1995 and Z3 1.9 2.3 2.5i 2.8 3.0i with automatic transmission.

This oil cooler fits the following BMWs:
1992-1998 E36 BMW 318i 318is 318ti 323is 325i 325is 328i 328is M3
1993-1995 E34 BMW 525i 525i Wagon
1994-1995 E34 BMW 530i 530i Wagon
1996-2002 Z3 BMW Z3 1.9 Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0ibr>

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Radiator

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:591360

Part#: 17111728905

In Stock at Vendor

$ 399.99

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

$ 388.99 USD

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$ 388.99 USD

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Behr Replacement Radiator - More than likely, you are going to replace the radiator in your vehicle at least once. The joints where the cores meet the end tanks tend to get weak and are the first place to spring a leak. Impacts to the fins themselves can cause holes to form. Corrosion and clogging from the inside can make cooling less than effective and compromise coolant flow.

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Hella Radiator - Manual - E34

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:363371

Part#: 17111737760

In Stock at Vendor

$ 687.60 USD

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$ 687.60 USD

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Replace your leaking radiator

Motorsport Thermostat - 60C - Complete with Housing - M54 / M52tu ...

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:1171

Part#: TMS1171

Ships in 8 Business Days

$ 415.45 USD

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$ 415.45 USD

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This is a genuine BMW Motorsport part, designed specifically for BMW racing applications. We use this exact thermostat setup in our Championship-winning E46 330i race car. It is designed to be used on all M54 and M52TU double-VAN0S engines, as used in the 1999-2000 E46 323/328 and 2001-2005 E46 325/330. This 60 degree C (140 defrees F) thermostat comes complete with plastic thermostat housing. It does not use the plug and wiring for the stock DME so this should only be used with an aftermarket engine management system (Motec, Bosch, etc).

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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BMW Motorsports Water Pump w/ Upgraded Aluminum Impeller - E9X M3 ...

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:5574

Part#: 11518331044

Special Order: No Guaranteed ETA

$ 999.99 USD

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$ 999.99 USD

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Upgrade from the plastic impeller on the stock water pump to this aluminum impeller pump originally developed by BMW for the M3 GT4. This aluminum water pump was designed to stand up to the abuse of racing but can be used on a standard street car.

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Behr Radiator - E60, E61, E63, E64

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:579569

Part#: 376755591

Back Ordered

$ 267.99 USD

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$ 267.99 USD

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Replace your leaking radiator

ACM Auxiliary Fan Assembly - Suction - E36, Z3

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:371894

Part#: 64508372039

Back Ordered

$ 166.99 USD

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$ 166.99 USD

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Mounted behind the radiator

Motorsport Thermostat - 55 (NO LONGER AVAILABLE)

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:337991

Part#: 11531417215

Back Ordered

Starting at $ 232.98 USD

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Starting at $ 232.98 USD

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E46M3 Motorsport Thermostat 55C (Also fits Euro E36 M3 engine) A Genuine BMW part this thermostat opens at a much lower temperature than stock to keep your S54 engine (or Euro S50/S52 engine) running cooler in race applications.

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REMOTE RADIATOR

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:33047035

Part#: 17117634565

In Stock at Vendor

$ 156.99

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

$ 151.99 USD

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$ 151.99 USD

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E46 323/325/328/330 Manual, Z4 OEM Behr Radiator

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:338021

Part#: 17119071518

In Stock at Vendor

Starting at $ 249.99 USD

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Starting at $ 249.99 USD

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This is a BEHR brand (OEM supplier to BMW) replacement radiator for all 1999-2006 E46 3 series (non-M), including 323i, 323Ci, 328i, 328Ci, 325i, 325Ci, 330i, 330Ci, and Z4 2.5 and 3.0. Compare to BMW list price of $318! Save big, while still getting the highest quality radiator available for your BMW.

This radiator fits the follow BMWs: :
Only for Manual Transmission
1999-5/2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi - Not for cars with M56 engine

2003-2006 E85 BMW Z4 2.5i Z4 3.0i - M54 engine
2006-2008 E85 BMW Z4 M Roadster M Coupe

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Mounting Part

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:5095677

Part#: 64113422668

In Stock at Vendor

$ 25.99 USD

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$ 25.99 USD

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Behr Radiator Replacement

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For Automatic Vehicles only

T#:591355

Part#: 17117519211

In Stock at Vendor

$ 454.11 USD

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$ 454.11 USD

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Replace your faulty or worn radiator with this factory replacement

ACM Air Conditioning Fan - E39

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:374495

Part#: 64548380780

Ships in 1-2 days

$ 229.99

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

$ 223.99 USD

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$ 223.99 USD

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Also known as "pusher fan"

Radiator

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:594798

Part#: 17117576827

Ships in 1-2 days

$ 415.99 USD

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$ 415.99 USD

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Replacement Radiator from Behr Hella

Radiator

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:594801

Part#: 17117570094

Ships on Jul 28, 2026

$ 374.99 USD

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$ 374.99 USD

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More than likely, you are going to replace the radiator in your vehicle at least once. The joints at where the cores meet the ends tend to get weak and are the first place to spring a leak. Impacts to the fins themselves can cause holes to form. Corrosion and clogging from the inside can make it less than effective. Replace your leaking unit with a factory replacement and get that jug of coolant out of your back seat.

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Radiator

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:594800

Part#: 17117605644

Ships on Jul 28, 2026

$ 362.99 USD

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$ 362.99 USD

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Replacement Radiator from Behr

Behr Radiator - E34

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:1195792

Part#: 17111723467

Back Ordered

$ 273.99

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

$ 265.99 USD

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$ 265.99 USD

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OE replacement radiator

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