Home
Cooling

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

Clear BMW chassis

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.

Sub-Categories

Sort By:

OEM Style Hose Clamps

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

Add to Wish List

Sale - Save 3%

$ 3.99

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

Starting at $ 3.87 USD

Add to Wish List

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.

Show More Show Less

Bav Auto Spill-Proof Coolant / Antifreeze Funnel

T#:580395

Part#: B8800082

In Stock

Sale - Save 15% $ 32.99

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

$ 28.04 USD

Add to Wish List

Qty

Sale - Save 15%

$ 32.99

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

$ 28.04 USD

Add to Wish List

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

Add to Wish List

Qty

Sale - Save 20%

$ 29.99

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

$ 23.99 USD

Add to Wish List

Used to remove your fan clutch

Condor Speed Shop V2 Fan Mounting Brackets For 16" SPAL Fans ...

T#:577556

Part#: SPALM

Ships in 4 Business Days

$ 66.99 USD

Add to Wish List

Qty

$ 66.99 USD

Add to Wish List

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

Show More Show Less

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

Add to Wish List

Qty

Sale - Save 15%

$ 146.99

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

$ 124.94 USD

Add to Wish List

Bav Auto Fan Pulley Holder

T#:580358

Part#: B8800031

In Stock

Sale - Save 15% $ 23.99

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

$ 20.39 USD

Add to Wish List

Qty

Sale - Save 15%

$ 23.99

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

$ 20.39 USD

Add to Wish List

Used to remove your fan clutch

Condor Speed Shop SPAL Fan Relay Wiring Harness - E30, E34, E36 ...

T#:28736800

Part#: CSS-SPAL-RWK

Ships in 4 Business Days

$ 98.99 USD

Add to Wish List

Qty

$ 98.99 USD

Add to Wish List

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.

Show More Show Less

Engine Coolant Temperature Sensor (Blue or White Plug) - E30 E28 E24 ...

T#:7255

Part#: 13621357414

In Stock

$ 20.99 USD

Add to Wish List

Qty

$ 20.99 USD

Add to Wish List

This is a Bosch coolant temperature sensor (#0280130026) for the fuel injection system. It has a white tip and is rated at 20 degree Celsius & 2500 Ohm.

This item fits the following BMWs:
1984-1985 E30 BMW 318i
1984-1991 E30 BMW 325e 325es 325i 325ic 325is 325ix
1976-1981 E12 BMW 528i 530i
1982-3/1987 E28 BMW 528e 533i
1980-1984 E24 BMW 633csi
1980-1984 E23 BMW 733i

Show More Show Less

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

Add to Wish List

Qty

Sale - Save 25%

$ 32.99

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

$ 24.74 USD

Add to Wish List

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.

Show More Show Less

FAE Auxiliary Fan Switch 91C - E12, E21, E23, E24, E28, E3, E30, E9 ...

T#:369371

Part#: 61311364272

In Stock

$ 26.37

This product was last offered at the strikethrough price on
06-07-2026

$ 23.63 USD

Add to Wish List

Qty

$ 23.63 USD

Add to Wish List

Does not include o-ring

FAE Auxiliary Fan Switch 99C - E30

T#:369370

Part#: 61311364273

Ships on Aug 12, 2026

$ 24.97 USD

Add to Wish List

Qty

$ 24.97 USD

Add to Wish List

Does not include o-ring

Engine Coolant Temperature Sensor (Maroon Plug) - E30 318is, 325e/es ...

For vehicles with production date from 09/1985

T#:12657

Part#: 12621710512

In Stock

$ 28.65

This product was last offered at the strikethrough price on
06-19-2026

$ 15.76 USD

Add to Wish List

Qty

$ 15.76 USD

Add to Wish List

This is the is the engine coolant temperature sensor that provides information to the instrument cluster temperature gauge. The insulator has a tan insulator.

This item fits the following BMWs:
1986-1991 E30 BMW 325e 325es 325i 325ic 325is 325ix M3
1991 E30 BMW 318i 318is 318ic
1986-1988 E28 BMW 528e

Show More Show Less

FAE Coolant Temperature Sensor

T#:10784

Part#: 62110788115

Ships in 1-2 days

$ 13.99 USD

Add to Wish List

Qty

$ 13.99 USD

Add to Wish List

INSTRUMENTS ENGINE COOLANT TEMP SENSOR 62110788115

FAE Temperature Sending Unit - Temperature Gauge (One Prong Spade Typ...

For vehicles with production date up top 09/1985

T#:596552

Part#: 62111268355

Ships in 4 Business Days

$ 13.99 USD

Add to Wish List

Qty

$ 13.99 USD

Add to Wish List

Select Vehicle

Purpose

Category

Home

Cooling

Brand

View All Brands

Price

Special Offers

On Sale (6)

Shipping