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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 Style Hose Clamps

T#:338927

Part#: HOSE-CLAMPS

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06-13-2026

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$ 3.99

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Hose clamps for radiator hoses, coolant hoses, vacuum hoses, or intake hoses. These hose clamps are the same style as your OEM hoses with a smooth inside band to prevent cutting into the hose material.

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Bav Auto Spill-Proof Coolant / Antifreeze Funnel

T#:580395

Part#: B8800082

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This product was last offered at the strikethrough price on
05-03-2026

$ 28.04 USD

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$ 32.99

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$ 28.04 USD

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Multiple adapters include to fit a variety of vehicles.

Bav Auto Fan Clutch Wrench - 32mm

T#:580348

Part#: B8800019

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05-03-2026

$ 23.99 USD

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$ 23.99 USD

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Used to remove your fan clutch

Radiator / Cooling System Pressure Tester- Bavarian Autosport ...

T#:580397

Part#: B8800084

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05-03-2026

$ 124.94 USD

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$ 146.99

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Bav Auto Fan Pulley Holder

T#:580358

Part#: B8800031

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05-03-2026

$ 20.39 USD

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Used to remove your fan clutch

Bav Auto Angled Hose Pinch Plier Set - 2pc

T#:580379

Part#: B8800058

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05-03-2026

$ 24.74 USD

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Angled jaws close, creating a complete seal every time you use them - the jaws are offset, making it possible to use in hard-to-reach locations. Made of glass-filled nylon for extra strength. These are perfect for use with brake lines, etc.

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Rein Radiator Hose - Upper - E32, E34

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T#:6960

Part#: 11531722682

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$ 63.99 USD

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$ 63.99 USD

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BMW ENGINE WATER HOSE 11531722682.--

This item fits the following BMWs:
BMW 5 Series -535i
BMW 7 Series - 735i, 735iL

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Thermostat - 80°C

T#:594727

Part#: 11531713040

Ships on Aug 6, 2026

$ 35.99 USD

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$ 35.99 USD

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The thermostat on your vehicle controls the flow of coolant based on temperature. When you just start your engine, the thermostat remains closed to accelerate the warm up process. After a few minutes, it opens up to allow the warm fluid to flow. If your vehicle is overheating but not blowing warm air from the heater, the problem is more than likely your thermostat.

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Water Pump

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T#:582577

Part#: 11519070761

Ships on Nov 30, 2026

$ 55.99 USD

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$ 55.99 USD

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Meyle Radiator Fan Clutch - E31, E32, E34, E38, E39

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T#:591319

Part#: 11527502804

Ships on Nov 30, 2026

$ 101.99 USD

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$ 101.99 USD

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OEM replacement

Sachs Radiator Fan Clutch - E34, E36, E39, E46, E53, Z3

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T#:591739

Part#: 11527505302

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$ 133.99

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

$ 129.99 USD

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$ 129.99 USD

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Common source of engine overheating

OEM Rein Expansion Tank Cap - BMW E32 E34 E36 E38 E39 E46 & More ...

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T#:340541

Part#: 17111742231

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$ 17.99 USD

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$ 17.99 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.

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Meyle Expansion Tank Cap

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T#:579357

Part#: 3148009004

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This product was last offered at the strikethrough price on
05-15-2026

$ 8.99 USD

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$ 14.99

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$ 8.99 USD

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Replace worn or missing pieces.

Coolant Temperature Sensor - E36, E34, E32, E38, E31

T#:7172

Part#: 12621747281

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$ 13.99 USD

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$ 13.99 USD

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This is the engine coolant temperature sensor that is mounted into the cylinder head.

Rein Thermostat O-Ring (60 X 3.5 mm) - E28 E30 E32 E34 E36 E39 Z3 E23...

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T#:591144

Part#: 11531265084

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$ 2.05 USD

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$ 2.05 USD

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This O-ring seals the thermostat to the cylinder head.

Rein Water Pump O-Ring (Small) - E32, E34, E38, E39

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T#:379680

Part#: 11531710055

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$ 2.03 USD

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$ 2.03 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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Rein Expansion Tank Hose - E12, E21, E23, E24, E28, E30, E32, E34 ...

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T#:19431

Part#: 17121712736

In Stock

$ 13.99 USD

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$ 13.99 USD

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VENT HOSE 17121712736 Manufactured by CRP

Rein Water Hose (Right Outlet) - E32 E34

Also use- (Qty.) (1) 17 21 1 723 943 O-Ring. ¦ Right

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T#:593082

Part#: 17221728944

Ships in 4 Business Days

$ 28.99 USD

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$ 28.99 USD

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Transmission Oil Cooler to Water Manifold

OEM Rein Coolant Hose - E32 E34

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T#:6970

Part#: 11531741405

Ships in 4 Business Days

$ 14.99 USD

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$ 14.99 USD

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Over time, coolant hoses begin to get brittle and are susceptible to cracking and splitting. Replace your cracked or leaking coolant hose to prevent further leaks and potentially catastrophic failure.

This item fits the following BMWs:
BMW 5 Series - 530i, 530i wagon /540i
BMW 7 Series - 740i, 740iL

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Water Temperature Sensor

T#:596874

Part#: 12621288158

Ships in 1-2 days

$ 44.99 USD

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$ 44.99 USD

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M14x1.5 Thread. Your vehicle is equipped with numerous gauges to allow you to have a better idea of what is going on under the hood. By monitoring these gauges, you can prevent premature engine damage due to low oil pressure or high coolant temperatures. If one isn't functional though, you are in the dark as far as that system goes. One of the most vital is coolant temperature. Replace the sensor to get your gauge working properly again.

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FAE Water Temperature Sensor - E31, E32, E34, E38

T#:7171

Part#: 12621288158

Ships on Aug 13, 2026

$ 16.99 USD

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$ 16.99 USD

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ENGINE ELECTRICAL TEMPERATURE SENSOR, WATER 12621288158

Coolant Thermostat - Includes Sealing Gasket

T#:54852031

Part#: 028 280 0004

Ships on Oct 30, 2026

$ 11.99 USD

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$ 11.99 USD

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This Meyle-Original replacement thermostat is a direct-fit solution designed to maintain a rock-solid, factory-correct 80°C operating temperature.

Rein Heater Hose - E32, E34

2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:20514

Part#: 64211390935

Back Ordered

$ 12.99 USD

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$ 12.99 USD

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HOSE F WATER VALVE AND LEFT 64211390935 Manufactured by CRP

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