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BMW Cooling System Parts & Accessories for BMW E36 (1992-1998) M3

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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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Hose Clamp - 40mm-60mm

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T#:5227

Part#: 040-60T

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$ 3.99 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.

Features:

9mm band width

6mm hex & slotted head

Smooth inside of band = optimal hose protection

OEM

430 Stainless steel band and housing with zinc plated steel screw

Asymmetric housing = even distribution of forces and prevents tilting of the clamp when tightening

Screw support = ease of assembly due to the safe guidance of the emerging band

Short housing saddle = even contact pressure = improved efficiency

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O-RING

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T#:580584

Part#: C32348

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$ 3.99

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

$ 2.99 USD

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Rein Coolant Hose - E36

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2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:35875

Part#: 11531703844

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$ 9.17 USD

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BMW HOSE F RADIATOR AND ENGINE R

Service Kit - Intake & Cooling

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T#:55245851

Part#: 11XX17KT

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$ 25.88 USD

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Maintain the factory engineering integrity and peak performance of your ultimate driving machine with this Genuine BMW Intake and Cooling Refresh Kit.

Anti-Freeze Tester

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T#:641679

Part#: CTAA195

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$ 9.98 USD

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Tests all ethylene glycol solutions with radiator hot or cold

Gates Radiator Hose - Upper - E36, Z3

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T#:401921

Part#: 11531708499

Ships on Jul 30, 2026

$ 39.99 USD

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New upper radiator hose for your BMW

BMW Radiator Expansion Tank Pressure Fitting

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Requires the use of a Motive Power Bleeder, sold separately

T#:380462

Part#: 1175

Ships on Aug 4, 2026

$ 24.99 USD

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Allows you to check for leaks in the coolant system

Bremmen Engine Fan Blade - 11 Blades, 420mm - BMW M30 S38 M50 M52 S5...

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T#:640149

Part#: 11521712058

In Stock

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

$ 18.76 USD

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Sale - Save 22%

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This fan is driven by the serpentine belt, engaged by the fan clutch. If you have bad motor mounts, it's quite common for the blades of this fan to make contact with the radiator or radiator shroud, essentially self-destructing the fan into many pieces. Be sure to get a new fan clutch, while you are replacing this.

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2 Pin Connector

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T#:33412932

Part#: 61132359999

Ships on Jul 28, 2026

Sale - Save 25% $ 10.99

This product was last offered at the strikethrough price on
06-14-2026

$ 8.24 USD

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$ 8.24 USD

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Includes connector housing with terminals and seals. Commonly used for the coolant level sensor.

ECS Tuning replacement harness connectors include all necessary pins and wire seals for a complete harness repair. Whether you have a broken harness connector or need a complete wiring repair, we have the components you need.

Each connector includes an additional terminal in case one becomes lost or damaged during installation.

*OEM cross reference PN# 61132359999 - Commonly used for the coolant level sensor.

Please reference the original part number from the existing connector to confirm fitment, before ordering.

Suggested tools:

Suggested crimping pliers: T#387193
Wire De-pin tools:
12pc De-Pin Tool Set - T#386379
23pc De-Pin Tool Set - T#641943

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Radiator Hose - Lower

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T#:39295543

Part#: 11531726344

Ships on Aug 10, 2026

Sale - Save 22% $ 22.99

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

$ 17.94 USD

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Sale - Save 22%

$ 22.99

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

$ 17.94 USD

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Coolant Temperature Sensor

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T#:594615

Part#: 13621703993

Special Order: No Guaranteed ETA

$ 18.99 USD

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This is the coolant temperature sensor used in many BMW models from the mid-1990s to the mid-2000s. The engine computer relies on the coolant temp to set the fuel mapping for the engine. As the car warms up the computer changes the fuel mixture. If your car is running a bit rich (too much fuel) it could be because this sensor is failing and not sending the correct info to the computer.

This sensor is located in a variety of places depending on the engine. But it's one of those easy replacement items 'while you're in there' when doing a water pump or thermostat replacement.

This coolant temp sensor fits the following BMWs:
1996-1999 E36 BMW 323is 323ic 328i 328is 328ic M3, located in cylinder head
1999-2003 E39 BMW 540i, located on side of water pump
1999-2001 E38 BMW 740i 740il, located on side of water pump
1995-1996 E38 BMW 750il, located on side of water pump
1990-1999 E31 BMW 850i 850ci, located on side of water pump
2000-2006 E53 BMW X5 3.0i, located in cylinder head
2000-2006 E53 BMW X5 4.4i/4.6is/4.8is, located on side of water pump
1997-2002 Z3 BMW Z3 2.5i Z3 3.0i, located in cylinder head

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Meyle Heater Hose - E36

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T#:374249

Part#: 64211394293

Special Order: No Guaranteed ETA

$ 12.99 USD

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Engine inlet to heater control valve

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