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BMW Cooling System Parts & Accessories for BMW 7 Series E32 (1988-1994)

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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 Mahle-Behr Thermostat - 80 Degree - E24, E28, E30, E32, E34, E36,...

T#:2199

Part#: 11531713040

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$ 36.00

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04-25-2026

$ 35.99 USD

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The thermostat regulates the temperature of your coolant. At a predetermined temperature the thermostat will open to let coolant flow to the radiator and be cooled by airflow or the fan. Over time the thermostat will become stuck open or closed, leading to a variety of issues. A closed thermostat will never allow the coolant to reach the radiator and be cooled. Hot coolant will continue to circulate through the engine and absorb even more heat until boiling and the system overheats. An open thermostat is not as bad but is still not ideal - the coolant is always cool, with the temp needle always reading in the cool range. This tells the ECU to richen the fuel mixture to bring the car up to normal operating temp. So your fuel mileage decreases and the car runs rich.

Replacing the thermostat is an easy but messy job. This thermostat includes the main o-ring (but a housing gasket may be required). Consider replacing the housing and any associated temp sensors while you're in there. The cooling system will need to be bled after.

Most of the engines from the mid-1980s through the 1990s use the same thermostat design and they are interchangeable among the different temperatures. This is the 80* thermostat, towards the lower end of the range. However, keep in mind that BMW spent a lot of time engineering the cooling system to work in all kinds of conditions and changing thermostat temperature is not recommended to fix any failures in the cooling system.

This thermostat fits the following BMWs:
1977-1983 E21 BMW 323i
1986-1991 E30 BMW 318is 318ic 325e 325es 325i 325ic 325is 325ix
1992-1999 E36 BMW 318i 318is 318ti 318ic 323is 323ic 325i 325is 325ic 328i 328is 328ic M3
1982-1988 E28 BMW 528e
1986-1988 E28 BMW 535i
1989-1995 E34 BMW 525i 535i
1997-1998 E39 BMW 528i
1986-1989 E24 BMW 635csi
1988-1994 E32 BMW 735i 735il
1997-2000 Z3 BMW Z3 2.8 M Roadster M Coupe

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Radiator Fan Clutch

2X Entries Into Our F80 M3 Sweepstakes

T#:373088

Part#: 11527831619

In Stock

$ 71.83 USD

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Direct replacement

Radiator Fan Switch

2X Entries Into Our F80 M3 Sweepstakes

T#:361996

Part#: 61311378073

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$ 26.44 USD

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Measures radiator air temperature enabling the fan to turn off or on

URO Fan Blade - BMW E3X

2X Entries Into Our F80 M3 Sweepstakes

T#:373133

Part#: 11521712110

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$ 33.99 USD

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Replace your fragile fan blades before they break and damage your radiator.

Coolant expansion tank

T#:399788

Part#: 17111719110

In Stock

$ 75.99

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

$ 65.99 USD

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$ 75.99

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

$ 65.99 USD

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Aluminum Water Pump Pulley - 104MM

2X Entries Into Our F80 M3 Sweepstakes

T#:374330

Part#: 11511736910

In Stock

Sale - Save 22% $ 32.99

This product was last offered at the strikethrough price on
05-14-2026

$ 25.78 USD

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Sale - Save 22%

$ 32.99

This product was last offered at the strikethrough price on
05-14-2026

$ 25.78 USD

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Direct replacement durable aluminum pulley

Cooling Fan Shroud

2X Entries Into Our F80 M3 Sweepstakes

T#:377317

Part#: 17111723977

Back Ordered

$ 52.99 USD

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$ 52.99 USD

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Replacement for missing or broken shrouds

Water Pump

2X Entries Into Our F80 M3 Sweepstakes

T#:372934

Part#: 11519070761

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$ 44.99 USD

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The water pump in your vehicle keeps all that coolant flowing freely. If it begins to fail, overheating problems are inevitable. Don't take a chance on doing damage to engine internals by not replacing your water pump.

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Expansion Tank Hose

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T#:373093

Part#: 11531711002

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$ 41.99 USD

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Connects between the thermostat and the lower expansion tank then to the heater core

OEM Mahle-Behr Thermostat - E32 750il E31 850i

T#:2246

Part#: 11531729720

Ships on Oct 21, 2026

$ 52.99 USD

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Don't take chances! Proper maintenance is required to keep your BMW performing at peak levels. The thermostat basically controls when your car will overheat. This thermostat fits BMW E32 750il and E31 850i with M70 engine.

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:
1989-1994 E32 BMW 750il
1991-1995 E31 BMW 850i with M70 engine

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Coolant Hose

2X Entries Into Our F80 M3 Sweepstakes

T#:373098

Part#: 64218390710

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$ 21.99 USD

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Connects to coolant recovery tank

Radiator Hose - Upper

2X Entries Into Our F80 M3 Sweepstakes

T#:373022

Part#: 11531722682

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$ 28.05 USD

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$ 28.05 USD

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Over the years and with exposure to extremely hot coolant, the coolant hoses in your vehicle can take a beating. Being made of reinforced rubber, these hoses can fail in a number of ways. Splitting at a hose clamp, swelling, cracking, and breaking are just a few of the ways this hose can leave you stranded. Replace it at the first sign of wear to keep your coolant in your engine.

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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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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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Radiator Mount Support - Upper

2X Entries Into Our F80 M3 Sweepstakes

T#:377277

Part#: 17111712911

In Stock

$ 1.67 USD

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$ 1.67 USD

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Secures the upper radiator bracket to core support.

URO Water Pump O-Ring (Small) - BMW M60 M62 S62 M70 S70

2X Entries Into Our F80 M3 Sweepstakes

T#:377294

Part#: 11531710055

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$ 1.01 USD

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When it comes time to replace the water pump, be sure to replace all the O-Rings associated with it to ensure that your car stays leak free. If you are experiencing leaking issues, be sure to inspect these rings, as they might have worn down. This specific ring is used when replacing water pump on cooling pipe to the water accumulator. There are two per car.

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Expansion Tank Hose

2X Entries Into Our F80 M3 Sweepstakes

T#:50066848

Part#: 17121712736

In Stock

$ 12.79

This product was last offered at the strikethrough price on
08-31-2026

$ 10.99 USD

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$ 12.79

This product was last offered at the strikethrough price on
08-31-2026

$ 10.99 USD

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Coolant overflow hose designed to route excess coolant to and from the expansion tank, helping regulate system pressure and maintain proper coolant levels. Manufactured for correct fit and flow, it ensures reliable expansion tank operation and leak-free performance.

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Water Temperature Sensor

2X Entries Into Our F80 M3 Sweepstakes

T#:372926

Part#: 12621288158

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$ 6.99 USD

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$ 6.99 USD

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Replace the sensor to get your gauge working properly again.

URO Rubber Mount - Radiator - E30 E32 E34 E36 Z3

Lower

2X Entries Into Our F80 M3 Sweepstakes

T#:591951

Part#: 17111178412

Ships in 1 Business Day

$ 3.12 USD

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$ 3.12 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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URO Coolant Hose - BMW E34 E32

2X Entries Into Our F80 M3 Sweepstakes

T#:373028

Part#: 64211390934

Ships in 1 Business Day

$ 6.99 USD

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Connects the accumulator to the water valve

Coolant Hose

2X Entries Into Our F80 M3 Sweepstakes

T#:373138

Part#: 11531266459

Ships in 1 Business Day

$ 3.99 USD

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$ 3.99 USD

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Water pump to thermostat housing

Heater Hose

2X Entries Into Our F80 M3 Sweepstakes

T#:373063

Part#: 64211384763

Ships in 1 Business Day

$ 8.99

This product was last offered at the strikethrough price on
04-10-2026

$ 6.99 USD

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$ 6.99 USD

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Water valve to water pump

Radiator Hose - Upper

2X Entries Into Our F80 M3 Sweepstakes

T#:373024

Part#: 11531741405

Ships in 1 Business Day

$ 8.99 USD

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$ 8.99 USD

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Hose from radiator to water pump

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