BMW Cooling System Parts & Accessories for BMW 3 Series E30 (1984-1991)

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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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Bav Auto Spill-Proof Coolant / Antifreeze Funnel
Bav Auto Spill-Proof Coolant / Antifreeze Funnel
Bav Auto Tools - Corporate Logo
T#:580395
Part#: B8800082
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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
Bav Auto Fan Clutch Wrench - 32mm
Bav Auto Tools - Corporate Logo
T#:580348
Part#: B8800019
In Stock
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$ 23.99 USD
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Used to remove your fan clutch
Radiator / Cooling System Pressure Tester- Bavarian Autosport
Radiator / Cooling System Pressure Tester- Bavarian Autosport ...
Bav Auto Tools - Corporate Logo
T#:580397
Part#: B8800084
In Stock
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05-03-2026

$ 124.94 USD
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Bav Auto Fan Pulley Holder
Bav Auto Fan Pulley Holder
Bav Auto Tools - Corporate Logo
T#:580358
Part#: B8800031
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$ 20.39 USD
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Used to remove your fan clutch
Geba Water Pump (Metal Impeller) - E30 325e/I 88-91, E34 525i 89-90, E28 528e 1988
Geba Water Pump (Metal Impeller) - E30 325e/I 88-91, E34 525i 89-90, ...
Geba - Corporate Logo
T#:3451
Part#: 11511719836
Ships in 4 Business Days
$ 72.99

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

$ 70.99 USD
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$ 70.99 USD
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This water pump fits BMWs with the M20 6 cylinder engine.

Geba builds all of their pumps to exceed factory specifications by using a metal impeller. This offers a huge improvement over stock and a massive increase in reliability. Servicing all major European models, Geba has you covered when it comes time for a new water pump.

This water pump fits the following BMWs:
1988-1991 E30 BMW 325e 325es 325i 325ic 325is 325ix
1988 E28 BMW 528e
1989-1990 E34 BMW 525i
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Water Pump - E30/E36/Z3 318i/is/ic/Z3 1.9 with M42/M44 engine
Water Pump - E30/E36/Z3 318i/is/ic/Z3 1.9 with M42/M44 engine ...
Geba - Corporate Logo
T#:6022
Part#: 11510393338
Ships in 3 Business Days
$ 96.37

This product was last offered at the strikethrough price on
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$ 94.99 USD
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$ 94.99 USD
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Don't take your car's cooling system for granted!One of the biggest weak points is the cooling system. Replacing your waterpump will go a long way for keeping your car on the road and operating properly.

Geba builds all of their pumps to exceed factory specifications by using a metal impeller. This offers a huge improvement over stock and a massive increase in reliability. Servicing all major European models, Geba has you covered when it comes time for a new water pump.

This item fits the following BMWs:
1990-1991 E30 BMW 318i 318is 318ic
1992-1998 E36 BMW 318i 318is 318ti 318ic
1996-1998 Z3 BMW Z3 1.9

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Bav Auto Angled Hose Pinch Plier Set - 2pc
Bav Auto Angled Hose Pinch Plier Set - 2pc
Bav Auto Tools - Corporate Logo
T#:580379
Part#: B8800058
In Stock
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This product was last offered at the strikethrough price on
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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Thermostat - 80°C
Thermostat - 80°C
Mahle - Corporate Logo
T#:594727
Part#: 11531713040
Ships on Aug 5, 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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O-RING
O-RING
Victor Reinz - Corporate Logo
T#:580584
Part#: C32348
Ships in 3 Business Days
$ 3.99

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

$ 2.99 USD
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$ 2.99 USD
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Victor Reinz Coolant Pipe Gasket
Victor Reinz Coolant Pipe Gasket
Victor Reinz - Corporate Logo
T#:19371
Part#: 11121726721
Back Ordered
$ 3.05 USD
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$ 3.05 USD
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GASKET ASBESTOS FREE 11121726721 Manufactured by Reinz

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