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:

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

Add to Wish List

Qty

$ 298.35 USD

Add to Wish List

Brand new radiator equivalent to OE

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

Add to Wish List

Qty

$ 388.99 USD

Add to Wish List

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.

Show More Show Less

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

Add to Wish List

Qty

$ 687.60 USD

Add to Wish List

Replace your leaking radiator

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

Add to Wish List

Qty

$ 267.99 USD

Add to Wish List

Replace your leaking radiator

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

Add to Wish List

Qty

$ 151.99 USD

Add to Wish List

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

Add to Wish List

Starting at $ 249.99 USD

Add to Wish List

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

Show More Show Less

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

Add to Wish List

Qty

$ 454.11 USD

Add to Wish List

Replace your faulty or worn radiator with this factory replacement

Radiator

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

T#:594798

Part#: 17117576827

Ships in 1-2 days

$ 415.99 USD

Add to Wish List

Qty

$ 415.99 USD

Add to Wish List

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

Add to Wish List

Qty

$ 374.99 USD

Add to Wish List

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.

Show More Show Less

Radiator

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

T#:594800

Part#: 17117605644

Ships on Jul 28, 2026

$ 362.99 USD

Add to Wish List

Qty

$ 362.99 USD

Add to Wish List

Replacement Radiator from Behr

VEMO Electronic Thermostat And Coolant Distribution Module - BMW B58T...

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

T#:52903296

Part#: V20-99-0005

Ships in 3 Business Days

$ 336.99 USD

Add to Wish List

Qty

$ 336.99 USD

Add to Wish List

An electronic thermostat that is controlled by the car's computer for optimal control over the engine and coolant temperature. Internal valves are opened and closed by the vehicle's DME/ECU to achieve specific temperature targets for optimal engine efficiency and performance.

Show More Show Less

VEMO Coolant Thermostat Assembly - BMW G20 G22/23 G30 B48 2.0L ...

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

T#:49578587

Part#: V20-99-1310

Special Order: No Guaranteed ETA

$ 182.99 USD

Add to Wish List

Qty

$ 182.99 USD

Add to Wish List

Modern BMW thermostats are electronically controlled, allowing the DME/ECU to directly regulate coolant flow throughout the engine and its components. This system enables the thermostat to operate based on a broader range of temperature inputs, such as coolant, cylinder head, engine block, and oil temperatures, for more refined control of engine warm-up and temperature across diverse conditions. Unlike traditional thermostats, which simply open or close to permit coolant flow, this system uses a rotary valve for more dynamic control. The rotary valve adjusts to various positions, allowing for partial or full coolant flow to designated passageways as needed. This precision control helps your BMW's engine reach optimal temperatures quickly and ensures efficient heat management under various driving conditions.

Show More Show Less

VEMO Electric Radiator Fan & Shroud - 600W - BMW F22/23 F3X

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

T#:41052829

Part#: 17428641964

Special Order: No Guaranteed ETA

$ 407.99

This product was last offered at the strikethrough price on
01-29-2026

$ 388.99 USD

Add to Wish List

Qty

$ 388.99 USD

Add to Wish List

The auxiliary fan in your vehicle serves an extremely important role. When your car reaches temperatures that may be hazardous to your engine, the auxiliary fan moves air through the radiator to provide better cooling. Usually activated during times of stationary vehicle operation, it supplements the air usually driven through the radiator by driving down the road. If your vehicle is getting too hot during traffic or at stop lights, your auxiliary fans are probably faulty. Replace yours to restore the factory cooling in your vehicle and prevent catastrophic damage to your engine. Even if your fans are still operational but the blades are damaged or cracked, replacement is the only solution.

Show More Show Less

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

Add to Wish List

Qty

$ 265.99 USD

Add to Wish List

OE replacement radiator

Select Vehicle

Category

Home

Cooling

Brand

View All Brands

Price

Special Offers

New (2)

Shipping

Free Shipping on orders $49+ (5)