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BMW Cooling System Parts & Accessories for BMW 5 Series E28 (1982-1988)

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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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Febi Auxiliary Fan Switch - 82ï¿½C - E12, E21, E23, E24, E28, E3, ...

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T#:10520

Part#: 61311364272

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$ 20.99 USD

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$ 20.99 USD

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CHASSIS ELECTRICAL TEMPERATURE SWITCH 61311364272

OEM Febi Engine Fan Blade - E30 325e/I 88-91, E24, E28, E34, E36, Z3 ...

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T#:377352

Part#: 11521723363

In Stock

$ 48.33

This product was last offered at the strikethrough price on
04-20-2026

$ 46.99 USD

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This fan is driven by the belt, engaged by the fan clutch. If you have bad motor mounts, it's quite common for the blades of this fan to make contact with the radiator or radiator shroud, essentially self-destructing the fan into many peices. Be sure to get a new fan clutch, while you are replacing this. This item fits the following BMWs: 1988-1991 E30 BMW 325e 325es 325i 325ic 325is 325ix 1992-1998 E36 BMW 318i 318is 318ti 318ic 1988 E28 BMW 528e 535i 535is M5 1989-1990 E34 BMW 525i 1988-1989 E24 BMW 635csi M6 1997-1998 Z3 BMW Z3 1.9

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BMW Coolant / Antifreeze - 1.5L

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T#:16175674

Part#: 82141467704

Ships on Oct 7, 2026

$ 70.99 USD

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Coolant G11 (Concentrate). The right anti-freeze agent makes a key contribution towards the reliable functioning of the engine cooling system under all operating and weather conditions. Cooler anti-freeze agents from Febi are precisely matched to the special requirements of the vehicle manufacturer and offer reliable protection from damages caused by freezing, corrosion, and cavitation. A good functioning cooling system is a primary prerequisite for the optimum operation of the engine. The ideal mixing ratio is 1:1, which offers frost protection to -36° C. With a ratio of 1:1 of water and concentrate, the boiling point of the cooling is approximately 107° C.+ High protection against freezing, corrosion, and cavitation Prevention of deposits and foam formation

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Radiator Fan Switch - 91/99 degree - E30 E36 E34 E32 E31 Z3

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T#:4562

Part#: 61311378073

In Stock at Vendor

$ 60.99

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

$ 58.99 USD

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Engine radiator double temperature fan switch, 91/99 degree celsius. This switch is designed to activate the auxiliary fan at the specified temperatures. A faulty switch can lead to the auxiliary fan not activating, causing over heating.
Since the late 1800’s Febi has been fabricating replacement metal parts. This history is self evident in the quality and vast amount of applications they service. With more than 34,000 repair solutions for cars and commercial vehicles you can be sure Febi has you covered.
This item fits the following BMWs:
1987-1991 E30 BMW 318i 318is 318ic 325e 325es 325i 325ic 325is 325ix M3
1992-1995 E36 BMW 318i 318is 318ti 318ic 323is 323ic 325i 325is 325ic M3
1989-1995 E34 BMW 525i 530i 535i 540i M5
1988-1994 E32 BMW 735i 735il 740i 740il 750il
1990-1999 E31 BMW 840i 840ci 850i 850ci 850csi
1996-7/1996 Z3 BMW Z3 1.9
1996-5/1997 Z3 BMW Z3 2.8

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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

In Stock

$ 2.05 USD

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$ 2.05 USD

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

Engine Coolant Temperature Sensor - E30 318is, 325e/es 325i/is/ix ...

For vehicles with production date from 09/1985

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T#:340715

Part#: 12621710512

In Stock at Vendor

$ 20.99

This product was last offered at the strikethrough price on
06-25-2026

$ 16.99 USD

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$ 16.99 USD

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

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T#:19431

Part#: 17121712736

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$ 13.99 USD

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VENT HOSE 17121712736 Manufactured by CRP

OEM Febi Cylinder Head Coolant Temperature Sensor - BMW E28 524td ...

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T#:38419103

Part#: 13622242184

In Stock

Sale - Save 78% $ 10.99

This product was last offered at the strikethrough price on
05-02-2026

$ 2.45 USD

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Sale - Save 78%

$ 10.99

This product was last offered at the strikethrough price on
05-02-2026

$ 2.45 USD

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Measures the temperature of the coolant at the cylinder head

Water Pump to Thermostat Cooling Hose - E30 E34 E28

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T#:6917

Part#: 11531287651

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$ 10.99 USD

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Replace your cracked or leaking coolant hose with this radiator coolant hose that goes from the waterpump to the thermostat on cars with the M20 engine. We recommend inspecting cooling system hoses for dry rot / cracks yearly.

This item fits the following BMWs:
1984-1991 E30 BMW 325e 325es 325i 325ic 325is 325ix
1982-1988 E28 BMW 528e
1989-1990 E34 BMW 525i

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OEM Rein Radiator Coolant Cap

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T#:38161716

Part#: 92810625703

Ships in 3 Business Days

$ 11.99 USD

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Rein Automotive OE Quality caps are designed to be direct replacements for OE caps. Rein caps are designed to match or exceed the OE materials used and are produced to the highest standards to ensure long service life. Rein Automotive OE quality caps keep the coolant system at the proper pressure, just like the OE cap.

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OEM Rein Radiator Cap - E21 E24 E10 E12 E23 E28

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T#:7395

Part#: 17111100848

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$ 11.99 USD

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The radiator tank cap keeps necessary pressure on your coolant to increase efficiency. If you have an overheating issue in your vehicle, a simple, quick, and inexpensive part to replace is this cap. Often times, the coolant is not kept under enough pressure to keep it from boiling or expanding too much. This cap keeps all the heat and liquid inside the coolant system for maximum efficiency. Should be replaced each time major coolant system service is performed.

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Febi Freeze Plug - 11111714712

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T#:6570

Part#: 11111714712

In Stock at Vendor

$ 3.99

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

$ 1.81 USD

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$ 1.81 USD

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ENGINE COVER LID 11111714712

Rein Coolant Hose - E28, E30, E34

For vehicles with production date from 09/1987

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T#:379671

Part#: 13541719966

Ships in 1 Business Day

$ 6.11 USD

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$ 6.11 USD

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Thermostat to throttle housing

Febi Bypass Hose - E12, E23, E24, E28, E3, E32, E34, E9

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T#:382396

Part#: 11531266459

Ships in 1-2 days

$ 9.99

This product was last offered at the strikethrough price on
02-24-2026

$ 9.17 USD

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$ 9.17 USD

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Water pump to thermostat housing

Rein Thermostat 80C - E30 325e, E28 535i, E24 633CSi

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T#:34114243

Part#: 11531710953

Back Ordered

$ 19.99 USD

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Thermostat 80C is a crucial component for controlling the temperature in BMW engines, ensuring optimal performance and protection. Designed to open at 80°C, this thermostat helps your engine reach its ideal operating temperature quickly while preventing overheating. Engineered specifically for BMW vehicles, the Thermostat 80C ensures precise temperature regulation, enhancing both engine efficiency and longevity. Available at Turner Motorsport, this direct-fit replacement offers easy installation and reliable performance.

Designed for BMW engines for a perfect fit
Opens at 80°C to regulate coolant flow and maintain optimal temperature
Prevents overheating and improves engine efficiency
Manufactured from high-quality, durable materials for long-lasting use
Direct-fit replacement ensures hassle-free installation
Enhances overall engine performance and longevity

The Thermostat 80C from Turner Motorsport is the perfect choice for BMW owners looking to maintain optimal engine temperature, ensuring smooth operation and extending the life of their vehicle.

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