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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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Thermostat & Water Pump Kit - E30 325, 325e, 325i

T#:30397424

Part#: 11531730470KT2

In Stock

Sale - Save 10% $ 174.99

This product was last offered at the strikethrough price on
04-21-2026

$ 158.06 USD

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Sale - Save 10%

$ 174.99

This product was last offered at the strikethrough price on
04-21-2026

$ 158.06 USD

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Over time, the water pump in BMW vehicles becomes a common point of failure, typically requiring replacement around the 60,000-mile mark. To ensure optimal performance of your vehicle's cooling system, it's also advisable to replace the thermostat during this service. Turner aims to make this maintenance task easier with its all-in-one Water Pump & Thermostat Replacement Kit.

This comprehensive kit includes:

Water Pump - OEM Geba (11519071562) 80°C Thermostat - OEM MAHLE (11531713040) Thermostat Housing - URO Parts (11531730470) Thermostat Housing Gasket - Genuine BMW (11531722692) Antifreeze/Coolant, 1 Gallon - Genuine BMW (82141467704) Opt for this premium kit to ensure a thorough and reliable repair, extending the lifespan of your BMW's cooling system.

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Comprehensive Coolant Hose Kit - E30 M20

For vehicles with production date from 09/1987

T#:41897490

Part#: E30M20HSTKT

Back Ordered

Sale - Save 2% $ 338.99

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

$ 332.77 USD

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Sale - Save 2%

$ 338.99

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

$ 332.77 USD

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This Comprehensive Coolant Hose Kit – E30 is a must-have for any BMW M20 enthusiast looking to maintain cooling efficiency and avoid future breakdowns. Restore your classic E30’s performance and reliability with a hose kit built to last.

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Water Pump & Thermostat Kit - BMW M42

T#:30198008

Part#: 11537511580KT5

Ships on Sep 29, 2026

Sale - Save 3% $ 118.99

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

$ 115.90 USD

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Sale - Save 3%

$ 118.99

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

$ 115.90 USD

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Regular maintenance is key to keeping your BMW running smoothly, and the water pump is a critical component that should be serviced every 60,000 miles. To ensure the overall efficiency of your cooling system, it's also recommended to replace the thermostat at the same time. Turner Motorsport has created a streamlined solution with their Water Pump & Thermostat Replacement Kit, making your cooling system upgrade simple and effective.

Kit Includes:

Meyle Water Pump with Metal Impeller (11510393338) VEMO Thermostat - 88°C (11537511580) Elring Thermostat Housing Flange Gasket (11531721172) Genuine BMW Coolant/Antifreeze (82141467704) Benefits:

Enhanced Cooling Efficiency: Earlier opening thermostat improves temperature control under performance conditions. Reliable Components: Includes high-quality parts from Meyle and VEMO, known for their durability and reliability. Complete Solution: All necessary components for a comprehensive cooling system refresh in one convenient kit. Performance-Driven Design: Ideal for those looking to maintain and enhance the cooling capabilities of their S55 engine.

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Thermostat Replacement Kit - E28, E30, E34 M20B25/27

T#:41289770

Part#: 11531730470TKT

Ships in 4 Business Days

Sale - Save 22% $ 93.99

This product was last offered at the strikethrough price on
06-08-2026

$ 73.38 USD

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Sale - Save 22%

$ 93.99

This product was last offered at the strikethrough price on
06-08-2026

$ 73.38 USD

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This BMW Thermostat Replacement Kit is the go-to choice for preserving the performance and reliability of your classic M20-powered BMW—keeping your engine running cool and smooth mile after mile.

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Race German Coolant Temperature Sender Adapter - M12x1.5

T#:6827887

Part#: RGCTSAM12

Ships in 3 Business Days

$ 35.99 USD

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$ 35.99 USD

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Race German has devoted themselves to providing quality products for late model BMWs that cover both street and track applications. Race German has now grown their catalog to a wide variety of models and products geared towards keeping your car looking and running nice. For those looking to install an aftermarket coolant temp gauge, Race German has the perfect accessory for you! This adapter is machined out of aluminum and splices into your upper radiator hose. Perfect for use with Race German's E30 temperature gauge but has compatibility with a wire variety of other cars as well! Features: Tapped for M12x1.5 sized sensor 38mm diameter outlets which fit most BMW hoses Includes 2x hose clamps **Does not include temp sensor

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Meyle Water Pump - E30/E36/Z3 318i/is/ic/Z3 1.9 with M42/M44 engine ...

We Price Match - Give Us A Call or Chat!

T#:579327

Part#: 3130113400

Ships on Sep 29, 2026

$ 58.99 USD

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$ 58.99 USD

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Includes o-ring, features metal impeller.

Race German Coolant Temperature Sender Adapter - 1/8NPT

T#:6827888

Part#: RGCTSA1/8NPT

In Stock

$ 35.99 USD

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$ 35.99 USD

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Race German has devoted themselves to providing quality products for late model BMWs that cover both street and track applications. Race German has now grown their catalog to a wide variety of models and products geared towards keeping your car looking and running nice. For those looking to install an aftermarket coolant temp gauge, Race German has the perfect accessory for you! This adapter is machined out of aluminum and splices into your upper radiator hose. Perfect for use with Race German's E30 temperature gauge but has compatibility with a wire variety of other cars as well! Features: Tapped for 1/8NPT sized sensor 38mm diameter outlets which fit most BMW hoses Includes 2x hose clamps **Does not include temp sensor

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Facet Radiator Fan Switch - E24, E28, E30, E31, E32, E34, E36, Z3 ...

For vehicles with production date from 09/1987

T#:375144

Part#: 61311378073

In Stock

$ 44.99 USD

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$ 44.99 USD

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Measures radiator air temperature enabling the fan to turn off or on

Race German Rethreaded Coolant Sensor

T#:2602235

Part#: 001-08-00-00-09

Ships in 2 Business Days

$ 50.00 USD

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$ 50.00 USD

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Often overlooked item for your 24V E30 swap, this sensor is the best option for a plug and play solution to have a working temperature gauge when doing a engine swap.

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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Thermostat - 80°C

T#:594727

Part#: 11531713040

Ships on Aug 6, 2026

$ 35.99 USD

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$ 35.99 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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Fan Blade

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T#:594536

Part#: 11521723363

Ships on Nov 30, 2026

$ 32.99 USD

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$ 32.99 USD

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This fan is driven by the 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 peices. Be sure to get a new fan clutch, while you are replacing this.

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Radiator Fan Switch Plug - E30, E34, E36, E23, E32

T#:23947130

Part#: E30RADFANSP

In Stock

$ 17.99 USD

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$ 17.99 USD

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Thanks to its brittle plastic construction, this radiator fan switch plug is a common failure point. Race German offers this high-quality replacement to remedy this issue and get your car back to perfect operation.

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Meyle Expansion Tank Cap

We Price Match - Give Us A Call or Chat!

T#:579357

Part#: 3148009004

In Stock

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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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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Replace worn or missing pieces.

Race German Water Pump Stud Kit

T#:2602237

Part#: M20WPUMPSTUDKIT

Ships in 2 Business Days

$ 11.99 USD

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$ 11.99 USD

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Replaces the factory bolts with studs and nuts to make changing water pumps a breeze Features 3 Class 45H Allen Head Studs 3 Copper Flange Nuts

Coolant Thermostat - Includes Sealing Gasket

T#:54852031

Part#: 028 280 0004

Ships on Oct 30, 2026

$ 11.99 USD

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$ 11.99 USD

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This Meyle-Original replacement thermostat is a direct-fit solution designed to maintain a rock-solid, factory-correct 80°C operating temperature.

Engine Water Pump

We Price Match - Give Us A Call or Chat!

T#:594617

Part#: 11519070755

Special Order: No Guaranteed ETA

$ 44.99 USD

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$ 44.99 USD

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The water pump in your vehicle keeps all that coolant flowing freely. If it begins to fail, overheating problems are inevitable. Don't take a chance on doing damage to engine internals by not replacing your water pump.

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Meyle Radiator Hose - Upper - E30

For vehicles with production date from 09/1987

We Price Match - Give Us A Call or Chat!

T#:555679

Part#: 11531722218

Ships on Nov 30, 2026

$ 15.99 USD

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$ 15.99 USD

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Hose from radiator to water pump

Meyle Expansion Tank Cap

We Price Match - Give Us A Call or Chat!

T#:5958735

Part#: 17111742232

Special Order: No Guaranteed ETA

$ 10.99 USD

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$ 10.99 USD

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Wulf Gaertner Autoparts AG manufactures and markets automotive spare parts under its MEYLE brand. Since its foundation in 1958, Wulf Gaertner Autoparts has been an owner-operated, unlisted family business on the aftermarket scene. Since 1995, Wulf Gaertner Autoparts AG has been manufacturing and trading under its MEYLE brand. They pride themselves on top-grade quality-tested spare parts for passenger cars, vans and commercial vehicles. The coolant expansion tank cap keeps necessary pressure on your coolant to increase efficiency. If you have an overheating issue in your vehicle, a simple, quick, and inexpensive part to replace is this cap. Often times, the coolant is not kept under enough pressure to keep it from boiling or expanding too much. This cap keeps all the heat and liquid inside the coolant system for maximum efficiency. Should be replaced each time major coolant system service is performed.

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