BMW Cooling System Parts & Accessories for BMW E30 M3 S14 2.3L

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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 09/1987
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T#:361996
Part#: 61311378073
In Stock
$ 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
Condor Speed Shop V2 Fan Mounting Brackets For 16" SPAL Fans ...
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T#:577556
Part#: SPALM
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$ 66.99 USD
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$ 66.99 USD
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Stainless steel brackets for mounting a 16" SPAL fan on an OEM or aftermarket BMW radiator. The fan can be mounted on either side of the radiator. All mounting hardware is included. Fitment: e30, E36, E46
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Condor Speed Shop SPAL Fan Relay Wiring Harness - E30, E34, E36 ...
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T#:28736800
Part#: CSS-SPAL-RWK
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$ 98.99 USD
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Upgrade your E30 or E36 cooling system effortlessly with the Condor fan relay harness designed specifically for SPAL fans. This harness seamlessly integrates with your existing OEM radiator temperature switch (we recommend the 80/88c E36 sensor), making installation a breeze. Here are the key features of this kit:

Seamless integration with OEM radiator temperature switch Compatibility with SPAL fans for efficient cooling Triggering of the relay when the temperature threshold is met Weatherproof fuse holder for added protection High-temperature wire for reliable performance Durable wire sleeving resistant to abrasion, chemicals, and UV rays Two easy-to-install options for connecting to the BMW radiator temperature switch, labeled for simplicity Experience consistent and effective fan operation with the Condor fan relay harness, ensuring optimal cooling performance for your vehicle.

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Fan Clutch
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T#:373086
Part#: 11521723027
Ships in 1 Business Day
$ 74.00 USD
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Direct replacement from URO

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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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

Water Hose
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T#:373139
Part#: 11531266472
In Stock
$ 1.99 USD
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Return pipe to water pump