BMW Cooling System Parts & Accessories for BMW 6 Series E24 (1977-1989)

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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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Radiator Fan Switch
For vehicles with production date from 09/1986
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T#:361996
Part#: 61311378073
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$ 26.44 USD
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$ 26.44 USD
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Measures radiator air temperature enabling the fan to turn off or on
Fan Clutch
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T#:373086
Part#: 11521723027
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$ 74.00 USD
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Direct replacement from URO
Radiator Fan Clutch
Fits up to 09/79 production date
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T#:584529
Part#: 11521260459
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$ 121.29 USD
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$ 121.29 USD
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Thermostat Cover
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T#:384802
Part#: 11531268650
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$ 32.99 USD
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Made to fit just like the stock unit, this replacement will get your coolant system back in top shape quickly. Broken, cracked, or brittle flanges are no longer a problem. Take the worries out of your morning commute with an inexpensive piece of mind.
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Water Pump
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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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URO Fan Blade - E12, E23, E24, E28, E30
Fits from 09/79 production date
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T#:12996
Part#: 11521271846
In Stock at Vendor
$ 35.99

This product was last offered at the strikethrough price on
03-02-2026

$ 33.99 USD
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$ 33.99 USD
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The blades on your radiator cooling fan can get brittle and crack over the years. If cracked, the high speed rotation can cause the fan to spin apart. Don't take a chance on having your fan explode under your hood. Replace it now and keep your cooling proper and your radiator safe.
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Expansion Tank Hose
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T#:50066848
Part#: 17121712736
In Stock
New Item
$ 12.79 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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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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This O-ring seals the thermostat to the cylinder head.

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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VENT HOSE 17121712736 Manufactured by CRP


Coolant Hose
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T#:373138
Part#: 11531266459
Back Ordered
$ 3.99 USD
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Water pump to thermostat housing
Rubber Grommet
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T#:591950
Part#: 17111117442
Ships in 1 Business Day
$ 11.99 USD
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For mounting of radiator and oil cooler
URO Coolant Level Sensor - BMW E24 E30
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T#:37757292
Part#: 61311361248
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$ 12.99 USD
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URO Coolant Level Sensor - BMW E24 E30

URO Coolant Level Sensor - BMW E24 E30 is the perfect solution for restoring accurate coolant level monitoring in your BMW. If you are experiencing a false "low coolant" warning or if your vehicle fails to notify you of dangerously low coolant levels, this high-quality replacement sensor will fix those issues. Designed as a direct-fit OE replacement, this sensor installs easily into your coolant reservoir tank with a simple plug-and-play wiring connection. Made from durable polymer and corrosion-resistant metal materials, this sensor is built to withstand the intense heat of your vehicle’s cooling system. Alloy conductors help minimize electrical resistance for accurate operation and long-lasting reliability.

  • Resolves false "low coolant" indicator light warnings
  • Prevents failure to alert the driver of dangerously low coolant levels
  • Direct-fit OE replacement design for easy installation into the coolant reservoir tank
  • Simple plug-and-play wiring connection for quick installation
  • Manufactured from high-quality polymer and corrosion-resistant metal materials to endure high cooling system temperatures
  • Alloy conductors reduce electrical resistance for precise operation
  • Designed and tested for long-lasting reliability
  • 24 Month Unlimited Mileage Warranty for peace of mind
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URO Engine Temperature Sensor
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T#:37757224
Part#: 13621284397
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$ 7.99 USD
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This sensor functions as an oil temperature sensor in air-cooled cars and a coolant temperature sensor in water-cooled cars.
Cooling Hose
From production date 09/1981
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T#:373141
Part#: 11531274210
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$ 9.99 USD
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$ 9.99 USD
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Located under intake manifold
Coolant Level Sensor - 109mm Long
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T#:380458
Part#: 61311375715
Ships in 1 Business Day
$ 15.99 USD
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Replace your coolant level sensor and ensure that your levels are accurately monitored

Lower Radiator Hose
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T#:373010
Part#: 11531266462
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$ 10.99 USD
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Hose from radiator to water pump

URO Radiator Hose - Upper - BMW E24 E28
Up to production date 06/1987 From production date 09/1982
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T#:373011
Part#: 11531276647
Back Ordered
$ 17.99

This product was last offered at the strikethrough price on
02-22-2026

$ 16.79 USD
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$ 16.79 USD
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Replace your radiator hose before a blown hose leaves you stranded.
OEM Rein Radiator Cap - E21 E24 E10 E12 E23 E28
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T#:7395
Part#: 17111100848
In Stock at Vendor
$ 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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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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Radiator Hose - Lower
From production date 09/1982
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T#:373014
Part#: 11531289859
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$ 15.99 USD
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$ 15.99 USD
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Replace your radiator hose before a blown hose leaves you stranded.

Rein Thermostat 80C - E30 325e, E28 535i, E24 633CSi
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T#:34114243
Part#: 11531710953
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$ 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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Expansion Tank Cap
For vehicles with production date between 09/1982 and 05/1984
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T#:362007
Part#: 17114379047
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$ 7.99 USD
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$ 7.99 USD
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1.2 Bar pressure