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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

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T#:580395

Part#: B8800082

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This product was last offered at the strikethrough price on
08-19-2026

$ 28.99 USD

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Multiple adapters include to fit a variety of vehicles.

Bav Auto Fan Clutch Wrench - 32mm

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T#:580348

Part#: B8800019

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05-03-2026

$ 23.99 USD

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Used to remove your fan clutch

Coolant Hose E30 E34 M20 2.5L

T#:367835

Part#: 13541719967

In Stock

Sale - Save 8% $ 35.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 33.06 USD

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This product was last offered at the strikethrough price on
08-26-2026

$ 33.06 USD

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Upgrade your BMW E30 or E34 M20 2.5L engine with this Genuine BMW Coolant Hose. Crafted to exacting standards, this hose ensures optimal performance and durability for your vehicle. Say goodbye to leaks and overheating issues with this high-quality replacement part. Keep your BMW running smoothly and efficiently with this essential component.

Genuine BMW part for perfect fit and function
Crafted to exacting standards for durability
Prevents leaks and overheating
Ensures optimal engine performance
Compatible with BMW E30 and E34 M20 2.5L engines

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Genuine BMW Radiator Cap 1,4Bar - 17112227683 - E30,E30 M3, E28 M5 ...

T#:22513

Part#: 17112227683

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Sale - Save 9% $ 26.99

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$ 24.57 USD

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$ 26.99

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08-26-2026

$ 24.57 USD

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Genuine BMW Radiator Cap - 1,4Bar
This item fits the following BMW Chassis:
E30 M3,E30

Fits BMW Engines including:
S14,S38

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

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T#:580397

Part#: B8800084

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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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$ 124.94 USD

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Bav Auto Fan Pulley Holder

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T#:580358

Part#: B8800031

Ships on Feb 3, 2027

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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

Coolant Expansion Tank - E30 M3 1988-1991

T#:12562

Part#: 17112225543

Ships in 3 Business Days

Sale - Save 8% $ 205.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 190.16 USD

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$ 190.16 USD

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This Genuine BMW cooling system expansion tank / coolant reservoir is a direct replacement for the factory unit. Replace your cracked or leaking radiator expansion tank today and save your valuable S14 engine for damage.

When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

This item fits the following BMWs:
1988-1991 E30 BMW M3

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Genuine BMW Radiator Fan Clutch

T#:12998

Part#: 11521723918

In Stock

Sale - Save 8% $ 317.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 293.78 USD

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$ 317.99

This product was last offered at the strikethrough price on
08-26-2026

$ 293.78 USD

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Genuine BMW Fan Coupling - F&S

This item fits the following BMW Chassis:
E30,E34,E36

Fits BMW Engines including:
M10,M20,M30,M42,M44,S38

Genuine BMW Locking Plug - E30 325e 325es 325i

T#:30617

Part#: 11111285395

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Sale - Save 19% $ 32.99

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$ 26.62 USD

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$ 32.99

This product was last offered at the strikethrough price on
05-02-2026

$ 26.62 USD

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Genuine BMW Cover Lid -
This item fits the following BMW Chassis:
E30

Fits BMW Engines including:
M20

Genuine BMW Coolant hose - E34 535i

T#:367918

Part#: 17121712736

In Stock

Sale - Save 8% $ 77.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 71.66 USD

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08-26-2026

$ 71.66 USD

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Bav Auto Angled Hose Pinch Plier Set - 2pc

10X Entries Into Our F80 M3 Sweepstakes

T#:580379

Part#: B8800058

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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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Meyle Expansion Tank Cap

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T#:579357

Part#: 3148009004

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Sale - Save 40% $ 14.99

This product was last offered at the strikethrough price on
05-15-2026

$ 8.99 USD

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$ 8.99 USD

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Replace worn or missing pieces.

Genuine BMW Engine Water Hose 11531709050

T#:14575

Part#: 11531709050

In Stock

Sale - Save 59% $ 39.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 16.38 USD

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GENUINE BMW WATER HOSE

PENTOFROST NF 50/50 Antifreeze / Coolant Prediluted / Premixed - 1 G...

T#:34181293

Part#: 8114308

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This product was last offered at the strikethrough price on
09-01-2026

$ 19.94 USD

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Blue G11/G48 Coolant Pre-Mixed 50/50

Genuine BMW Auxiliary Fan Bracket - Left - E30 325e 325ix 318is 318i ...

T#:22543

Part#: 17401372828

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Sale - Save 9% $ 25.99

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$ 23.74 USD

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$ 25.99

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$ 23.74 USD

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Genuine BMW Bracket Left -

This item fits the following BMW Chassis:
E30

Fits BMW Engines including:
M10,M20

Water Hose - E30

T#:20217

Part#: 11531721847

In Stock

$ 14.99 USD

Limited Qty Sale

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$ 14.99 USD

Limited Qty Sale

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WATER HOSE 11531721847

This item fits the following BMWs:
BMW 3 Series - 318i, 318i Convertible, 318is

--. Fits BMW Engines including:
M42

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Genuine BMW Cooling Fan Bracket - Right

T#:22544

Part#: 17401372829

In Stock

Sale - Save 9% $ 25.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 23.74 USD

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$ 25.99

This product was last offered at the strikethrough price on
08-26-2026

$ 23.74 USD

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Genuine BMW Bracket Right -

This item fits the following BMW Chassis:
E30

Fits BMW Engines including:
M10,M20

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