BMW Cooling System Parts & Accessories for BMW 5 Series E34 (1987-1995)

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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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Water Pump - M50, M52, M52TU, and M54 Engines with Metal Impeller
Water Pump - M50, M52, M52TU, and M54 Engines with Metal Impeller ...
Geba - Corporate Logo
T#:341052
Part#: 11517527910
In Stock
$ 67.99

This product was last offered at the strikethrough price on
04-21-2026

$ 62.99 USD
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$ 62.99 USD
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The early M50/M52 engines had a serious weak point: the water pump. BMW originally used a plastic impeller in the waterpump. This would degrade over time and eventually break apart. Your car overheats immediately. This water pump is an updated one with a metal impeller. BMW has since released a water pump with a composte impeller that does not have the same issues and is just as reliable as the metal impeller version. But for piece of mind, the metal impeller is tough to beat.

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 waterpump fits the following BMWs:
1999-2006  E46 BMW  323i, 323Ci, 328i, 328Ci, 325i, 325Ci, 325xi, 330i, 330Ci, 330xi
1997-2003  E39 BMW  528i, 525i, 530i
2004-2010  E83 BMW  X3 2.5i & 3.0i
2000-2006  E53 BMW  X5 3.0i
1997-2002  Z3 BMW  Z3 2.8, Z3 2.5, Z3 3.0, MZ3 (S52)
2003-2005  E85 BMW  Z4 2.5i & Z4 3.0i
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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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Automatic Transmission Cooler - E36 Z3 E34
Automatic Transmission Cooler - E36 Z3 E34
ACM - Corporate Logo
T#:2069
Part#: 17201728770
Ships in 2 Business Days
$ 207.15

This product was last offered at the strikethrough price on
05-11-2026

$ 201.87 USD
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$ 201.87 USD
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This transmission fluid/oil cooler fits E36 318i 318is 318ti 323i 323is 325i 325is 328i 328is M3, E34 525i 530i 1993-1995 and Z3 1.9 2.3 2.5i 2.8 3.0i with automatic transmission.

This oil cooler fits the following BMWs:
1992-1998 E36 BMW 318i 318is 318ti 323is 325i 325is 328i 328is M3
1993-1995 E34 BMW 525i 525i Wagon
1994-1995 E34 BMW 530i 530i Wagon
1996-2002 Z3 BMW Z3 1.9 Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0ibr>
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Hella Radiator - Manual - E34
Hella Radiator - Manual - E34
Behr - Corporate Logo
T#:363371
Part#: 17111737760
Ships in 2 Business Days
$ 687.60

This product was last offered at the strikethrough price on
08-13-2026

$ 497.64 USD
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$ 497.64 USD
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Replace your leaking radiator
Victor Reinz Water Pump O-Ring - E34, E36, E39, E46, E53, E60, E83, Z3, Z4
Victor Reinz Water Pump O-Ring - E34, E36, E39, E46, E53, E60, E83, Z...
Victor Reinz - Corporate Logo
T#:361076
Part#: 11511711484
In Stock
$ 2.03 USD
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$ 2.03 USD
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Solve your water pump leak
Victor Reinz Water Pump O-Ring (Small) - E32, E34, E38, E39
Victor Reinz Water Pump O-Ring (Small) - E32, E34, E38, E39
Victor Reinz - Corporate Logo
T#:362401
Part#: 11531710055
Ships in 9 Business Days
$ 2.99 USD
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$ 2.99 USD
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Replace each time to work on your water pump
O-RING
O-RING
Victor Reinz - Corporate Logo
T#:580584
Part#: C32348
Ships in 7 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 Water Pump Gasket - E31, E32, E34, E38, E39, E53
Victor Reinz Water Pump Gasket - E31, E32, E34, E38, E39, E53 ...
Victor Reinz - Corporate Logo
T#:376106
Part#: 11511731372
Ships in 7 Business Days
$ 7.99

This product was last offered at the strikethrough price on
07-23-2026

$ 7.13 USD
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$ 7.13 USD
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Should be replaced each time the water pump is removed
Gates Water Pump - E30, E34
Gates Water Pump - E30, E34
Gates - Corporate Logo
T#:591715
Part#: 11511719836
Ships on Oct 28, 2026
$ 122.99 USD
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$ 122.99 USD
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Includes gasket. New - not remanufactured!
Gates Radiator Hose - Upper - E34
Gates Radiator Hose - Upper - E34
Gates - Corporate Logo
T#:591781
Part#: 11531722215
Ships on Oct 28, 2026
$ 42.99 USD
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$ 42.99 USD
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Upper hose that connects your radiator to the flange
Gates Throttle Body Return Hose - E34
Gates Throttle Body Return Hose - E34
For vehicles with a production date from 03/1991
Gates - Corporate Logo
T#:591790
Part#: 11531738054
Ships on Oct 28, 2026
$ 64.99 USD
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$ 64.99 USD
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Replace your leaking hose
Gates Radiator Hose - Lower - E34
Gates Radiator Hose - Lower - E34
Gates - Corporate Logo
T#:591784
Part#: 11531722852
Ships on Oct 28, 2026
$ 15.99 USD
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$ 15.99 USD
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Hose from radiator to thermostat housing
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

Gates Coolant Hose - E34
Gates Coolant Hose - E34
Gates - Corporate Logo
T#:592903
Part#: 11531287651
Back Ordered
$ 20.99 USD
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$ 20.99 USD
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From water pump to thermostat housing
Gates Radiator Hose - Upper - E34
Gates Radiator Hose - Upper - E34
Gates - Corporate Logo
T#:591777
Part#: 11531720678
Back Ordered
$ 18.99 USD
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$ 18.99 USD
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Hose from radiator to water pump
Behr Radiator - E34
Behr Radiator - E34
Behr - Corporate Logo
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
Gates Coolant Hose - Molded - E30, E34
Gates Coolant Hose - Molded - E30, E34
Gates - Corporate Logo
T#:592918
Part#: 11531718982
Back Ordered
$ 20.99 USD
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$ 20.99 USD
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Connects between the Water pump and the thermostat

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