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BMW Cooling System Parts & Accessories for BMW 7 Series E23 (1978-1987)

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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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Race German Coolant Temperature Sender Adapter - M12x1.5

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T#:6827887

Part#: RGCTSAM12

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$ 35.99 USD

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Race German has devoted themselves to providing quality products for late model BMWs that cover both street and track applications. Race German has now grown their catalog to a wide variety of models and products geared towards keeping your car looking and running nice. For those looking to install an aftermarket coolant temp gauge, Race German has the perfect accessory for you! This adapter is machined out of aluminum and splices into your upper radiator hose. Perfect for use with Race German's E30 temperature gauge but has compatibility with a wire variety of other cars as well! Features: Tapped for M12x1.5 sized sensor 38mm diameter outlets which fit most BMW hoses Includes 2x hose clamps **Does not include temp sensor

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Race German Coolant Temperature Sender Adapter - 1/8NPT

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T#:6827888

Part#: RGCTSA1/8NPT

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$ 35.99 USD

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$ 35.99 USD

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Race German has devoted themselves to providing quality products for late model BMWs that cover both street and track applications. Race German has now grown their catalog to a wide variety of models and products geared towards keeping your car looking and running nice. For those looking to install an aftermarket coolant temp gauge, Race German has the perfect accessory for you! This adapter is machined out of aluminum and splices into your upper radiator hose. Perfect for use with Race German's E30 temperature gauge but has compatibility with a wire variety of other cars as well! Features: Tapped for 1/8NPT sized sensor 38mm diameter outlets which fit most BMW hoses Includes 2x hose clamps **Does not include temp sensor

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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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URO Fan Blade - E12, E23, E24, E28, E30

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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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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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Water Pump

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T#:372934

Part#: 11519070761

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$ 44.99 USD

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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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Thermostat Cover

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T#:384802

Part#: 11531268650

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$ 32.99 USD

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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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Radiator Fan Switch Plug - E30, E34, E36, E23, E32

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T#:23947130

Part#: E30RADFANSP

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$ 17.99 USD

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$ 17.99 USD

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Thanks to its brittle plastic construction, this radiator fan switch plug is a common failure point. Race German offers this high-quality replacement to remedy this issue and get your car back to perfect operation.

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Expansion Tank Hose

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T#:50066848

Part#: 17121712736

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$ 12.79 USD

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$ 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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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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Located under intake manifold

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.

Rubber Grommet

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T#:591950

Part#: 17111117442

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$ 11.99 USD

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$ 11.99 USD

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For mounting of radiator and oil cooler

Coolant Level Sensor - 109mm Long

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T#:380458

Part#: 61311375715

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$ 15.99 USD

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$ 15.99 USD

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Replace your coolant level sensor and ensure that your levels are accurately monitored

Coolant Hose

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T#:373138

Part#: 11531266459

Back Ordered

$ 3.99 USD

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$ 3.99 USD

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Water pump to thermostat housing

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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Replace your radiator hose before a blown hose leaves you stranded.

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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