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BMW Cooling System Parts & Accessories for BMW E12 530i M30 3.0L

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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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OEM Style Hose Clamps

10X Entries Into Our F80 M3 Sweepstakes

T#:338927

Part#: HOSE-CLAMPS

In Stock

Sale - Save 3% $ 3.99

This product was last offered at the strikethrough price on
06-13-2026

Starting at $ 3.87 USD

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Sale - Save 3%

$ 3.99

This product was last offered at the strikethrough price on
06-13-2026

Starting at $ 3.87 USD

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Hose clamps for radiator hoses, coolant hoses, vacuum hoses, or intake hoses. These hose clamps are the same style as your OEM hoses with a smooth inside band to prevent cutting into the hose material.

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Expansion Tank

2X Entries Into Our F80 M3 Sweepstakes

T#:36947225

Part#: 17135A6A031

Back Ordered

$ 102.99 USD

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$ 102.99 USD

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The coolant expansion tank in your vehicle provides a reservoir for excess fluid as it expands and contracts due to temperature changes. However, frequent exposure to these extreme fluctuations can cause the tank to crack or break over time. To maintain proper coolant levels within the cooling system, any damage to the tank—such as cracks, broken fittings, or damaged mounting points—requires immediate replacement.

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

2X Entries Into Our F80 M3 Sweepstakes

T#:12996

Part#: 11521271846

Ships in 1 Business Day

$ 34.99

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

$ 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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Radiator Fan Clutch

Fits from 09/79 production date

2X Entries Into Our F80 M3 Sweepstakes

T#:584529

Part#: 11521260459

Ships in 1 Business Day

$ 121.29 USD

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$ 121.29 USD

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Gear Wrench Angled Hose Clip Pliers

T#:387079

Part#: KDT3977

Ships in 1 Business Day

$ 53.99 USD

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$ 53.99 USD

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This tool is a variation of our popular 3976 Flat Band Hose Clamp Pliers and features 45º jaws with swivel tips to grip at any angle and pliers that latch securely in position.

Water Pump

5X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

T#:582577

Part#: 11519070761

Ships on Oct 1, 2026

$ 55.99 USD

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$ 55.99 USD

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Thermostat - 80°C

T#:594737

Part#: 11531254065

Back Ordered

$ 22.99

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

$ 21.99 USD

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$ 21.99 USD

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The thermostat on your vehicle controls the flow of coolant based on temperature. When you just start your engine, the thermostat remains closed to accelerate the warm up process. After a few minutes, it opens up to allow the warm fluid to flow. If your vehicle is overheating but not blowing warm air from the heater, the problem is more than likely your thermostat.

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Expansion Tank Hose

2X Entries Into Our F80 M3 Sweepstakes

T#:50066848

Part#: 17121712736

In Stock

$ 12.79

This product was last offered at the strikethrough price on
08-31-2026

$ 10.99 USD

Limited Qty Sale

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$ 12.79

This product was last offered at the strikethrough price on
08-31-2026

$ 10.99 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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Lower Radiator Hose

2X Entries Into Our F80 M3 Sweepstakes

T#:373010

Part#: 11531266462

Ships in 1 Business Day

$ 10.99 USD

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$ 10.99 USD

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Hose from radiator to water pump

Coolant Temperature Sensor

2X Entries Into Our F80 M3 Sweepstakes

T#:372927

Part#: 62110788115

Ships in 1 Business Day

$ 5.99 USD

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$ 5.99 USD

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This coolant sensor is located in the coolant system, monitor the temperature for both the gauge and ECU.

Coolant Hose

2X Entries Into Our F80 M3 Sweepstakes

T#:373138

Part#: 11531266459

Back Ordered

$ 3.99 USD

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Water pump to thermostat housing

URO Engine Temperature Sensor

2X Entries Into Our F80 M3 Sweepstakes

T#:37757224

Part#: 13621284397

Ships in 1 Business Day

$ 7.99 USD

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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.

O-RING

T#:580584

Part#: C32348

Ships in 1-2 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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BMW Thermostat Gasket

2X Entries Into Our F80 M3 Sweepstakes

T#:15048409

Part#: 11531250357

Back Ordered

$ 4.99

This product was last offered at the strikethrough price on
05-08-2026

$ 3.99 USD

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$ 3.99 USD

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Whether you are just doing general maintenance or noticing some symptoms of a failing gasket, it's always a good idea to replace your gaskets anytime your engine components are removed. Get your replacement gasket here today!

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Mahle Thermostat - 80ï¿½C - E12, E23, E24, E28

T#:591826

Part#: 11539055588

Back Ordered

$ 28.99 USD

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$ 28.99 USD

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Stop your overheating problem.

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