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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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Water Pump and Seal - Saleri

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T#:581204

Part#: PA659

Ships in 1 Business Day

$ 60.99 USD

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$ 60.99 USD

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Mechanical Water Pump

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T#:30164633

Part#: 11518638026

In Stock

$ 195.99

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

$ 192.99 USD

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$ 192.99 USD

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Behr Radiator - E36

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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

Saleri Water Pump With Support Bracket

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T#:47439411

Part#: 11517644809

In Stock

$ 201.99

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

$ 195.99 USD

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$ 195.99 USD

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Radiator

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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

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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

Behr Radiator - E60, E61, E63, E64

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T#:579569

Part#: 376755591

Back Ordered

$ 267.99 USD

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$ 267.99 USD

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Replace your leaking radiator

Water Pump and Gasket - Saleri

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T#:581201

Part#: PA1425

Ships in 1 Business Day

$ 79.56

This product was last offered at the strikethrough price on
04-25-2026

$ 77.88 USD

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$ 77.88 USD

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Ensure the smooth flow of coolant and prevent overheating issues in your Mini by replacing the water pump. Engineered to keep coolant circulating efficiently, this component is crucial for preventing potential damage to your engine. Water pump failure is a common problem in many German vehicles and can result in severe consequences, including overheating, head gasket, or piston ring failure. Consider replacing the water pump preventatively during any timing belt replacement, as it's a critical maintenance item.

Prevents overheating issues and engine damage
Common problem in German vehicles
Vital for maintaining proper coolant circulation
Considerate preventative maintenance during timing belt replacements
Ensure compatibility with thermostats and coolant for a comprehensive replacement

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MINI R52 R53 Water Pump With O-Ring

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T#:28836399

Part#: 11517520123

Ships in 1 Business Day

$ 178.99

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

$ 171.99 USD

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$ 171.99 USD

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MINI R52 R53 Water Pump With O-Ring

Upgrade your Mini's cooling system with the MINI R52 R53 Water Pump With O-Ring. Engineered for reliability and performance, this water pump ensures efficient coolant circulation to maintain optimal engine temperature. Say goodbye to overheating issues and enjoy a smooth and worry-free driving experience with this high-quality water pump.

Specifically designed for MINI R52 R53 models
Includes O-ring for secure sealing
Ensures efficient coolant circulation
Prevents engine overheating
Provides reliable and worry-free performance

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REMOTE RADIATOR

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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

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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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Behr Radiator Replacement

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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

Saleri Electric Water Pump - N20

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T#:47439419

Part#: 11515A81BE9

Ships in 1-2 days

$ 551.99

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

$ 535.99 USD

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$ 535.99 USD

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Radiator

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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

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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

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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

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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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