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BMW Cooling System Parts & Accessories for BMW 3 Series E30 (1984-1991)

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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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Bav Auto Spill-Proof Coolant / Antifreeze Funnel

T#:580395

Part#: B8800082

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Sale - Save 15% $ 32.99

This product was last offered at the strikethrough price on
05-03-2026

$ 28.04 USD

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$ 32.99

This product was last offered at the strikethrough price on
05-03-2026

$ 28.04 USD

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Multiple adapters include to fit a variety of vehicles.

Bav Auto Fan Clutch Wrench - 32mm

T#:580348

Part#: B8800019

In Stock

Sale - Save 20% $ 29.99

This product was last offered at the strikethrough price on
05-03-2026

$ 23.99 USD

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This product was last offered at the strikethrough price on
05-03-2026

$ 23.99 USD

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Used to remove your fan clutch

Radiator / Cooling System Pressure Tester- Bavarian Autosport ...

T#:580397

Part#: B8800084

In Stock

Sale - Save 15% $ 146.99

This product was last offered at the strikethrough price on
05-03-2026

$ 124.94 USD

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$ 146.99

This product was last offered at the strikethrough price on
05-03-2026

$ 124.94 USD

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Bav Auto Fan Pulley Holder

T#:580358

Part#: B8800031

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Sale - Save 15% $ 23.99

This product was last offered at the strikethrough price on
05-03-2026

$ 20.39 USD

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This product was last offered at the strikethrough price on
05-03-2026

$ 20.39 USD

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Used to remove your fan clutch

Bav Auto Angled Hose Pinch Plier Set - 2pc

T#:580379

Part#: B8800058

In Stock

Sale - Save 25% $ 32.99

This product was last offered at the strikethrough price on
05-03-2026

$ 24.74 USD

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This product was last offered at the strikethrough price on
05-03-2026

$ 24.74 USD

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Angled jaws close, creating a complete seal every time you use them - the jaws are offset, making it possible to use in hard-to-reach locations. Made of glass-filled nylon for extra strength. These are perfect for use with brake lines, etc.

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Radiator

T#:591360

Part#: 17111728905

In Stock at Vendor

$ 399.99

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

$ 388.99 USD

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$ 388.99 USD

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Behr Replacement Radiator - More than likely, you are going to replace the radiator in your vehicle at least once. The joints where the cores meet the end tanks tend to get weak and are the first place to spring a leak. Impacts to the fins themselves can cause holes to form. Corrosion and clogging from the inside can make cooling less than effective and compromise coolant flow.

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DO88 Coolant Hoses - Blue - E30 M3

T#:13924864

Part#: DO88KIT130B

Ships on Aug 10, 2026

$ 342.99 USD

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$ 342.99 USD

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Made out of high-quality silicone, these hoses display the highest levels of durability and quality. With three to five layers of armor, the hoses are designed to withstand high pressure and heat for an extended period of time. The OE hoses are known to crack and leak but this hose kit eliminates any chance of that.

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DO88 Coolant Hoses - Red - E30 M3

T#:13924862

Part#: DO88KIT130R

Ships on Aug 10, 2026

$ 342.99 USD

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$ 342.99 USD

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Made out of high-quality silicone, these hoses display the highest levels of durability and quality. With three to five layers of armor, the hoses are designed to withstand high pressure and heat for an extended period of time. The OE hoses are known to crack and leak but this hose kit eliminates any chance of that.

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BMW E30 S14 Coolant Hoses - Black - DO88

T#:13924861

Part#: DO88KIT130S

Ships on Aug 10, 2026

$ 342.99 USD

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$ 342.99 USD

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BMW E30 S14 Coolant Hoses - Black - DO88 are engineered from high-quality silicone, offering superior durability and reliability for the BMW E30 S14. With three to five layers of reinforced silicone, these hoses are built to withstand high pressure and extreme temperatures, ensuring long-lasting performance.

High-Quality Silicone Construction: Made from premium silicone, providing excellent resistance to heat and pressure.
Reinforced Layers: Features three to five layers of armor, enhancing durability and reliability under demanding conditions.
Prevents Cracking and Leaking: Upgrades from OE hoses that are prone to cracking and leaking, ensuring a secure and leak-proof fit.
Extended Service Life: Designed to handle high temperatures and pressures for prolonged use, reducing the need for frequent replacements.
Enhanced Performance: Improves cooling system efficiency, maintaining optimal engine performance and reliability.

Turner Motorsport’s BMW E30 S14 Coolant Hoses - Black - DO88 offer a high-quality replacement solution, ensuring your BMW E30 S14 operates smoothly and reliably.

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