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BMW Cooling System Parts & Accessories for BMW 3 Series F30 (2012+)

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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 Installation Kit with Thermostat - N54, N55, S55

10X Entries Into Our F80 M3 Sweepstakes

T#:55353595

Part#: OTN54.T85KT3

In Stock

$ 390.23 USD

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$ 390.23 USD

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High oil temperatures are the ultimate enemy of your engine's longevity and performance. If you want to keep pushing your BMW to the limit you need to manage the heat.

Value Coolant Hose Kit - F3x - N55

10X Entries Into Our F80 M3 Sweepstakes

T#:56507827

Part#: F3XN55CSRL0KT2

In Stock

$ 90.90 USD

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$ 90.90 USD

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Our Value Cooling Maintenance Kit addresses the three most notorious failure points in one shot before you end up stranded on the side of the road or worse, overheating your engine

Water Pump And Thermostat Kit with Coolant

10X Entries Into Our F80 M3 Sweepstakes

T#:55965857

Part#: 11517604027KT3

Ships on Oct 21, 2026

$ 493.39 USD

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$ 493.39 USD

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Engineered to OE standards, this comprehensive cooling system package integrates the water pump, aluminum thermostat assembly, critical replacement hardware, and factory specified fluid into a single kit.

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Rein Water Hose Problem Solver Kit - F chassis N55

For Manual Transmission Only

2X Entries Into Our F80 M3 Sweepstakes

T#:53750119

Part#: 11537598237

In Stock at Vendor

$ 26.99 USD

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$ 26.99 USD

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Rein's Rubber Elbow Problem Solver Kit for the Coolant Feed Hose Replaces the Rubber End of the Hard Feed Line Without Having to Move the Exhaust or Replace the Entire Hard Line

Rein Water Hose With Metal Flange - F-Chassis - N55

2X Entries Into Our F80 M3 Sweepstakes

T#:53750147

Part#: CHU0632

In Stock

$ 52.99 USD

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$ 52.99 USD

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Heat cycles cause Cracking and Leaks on Rubber and Plastic Components. Replace Leaking Hose with this Part From Rein Featuring Upgraded Metal Flanges

Rein Engine Inlet To Changeover Valve Hose

2X Entries Into Our F80 M3 Sweepstakes

T#:52903280

Part#: 17128616914

In Stock at Vendor

$ 45.99 USD

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$ 45.99 USD

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This Rein Automotive coolant hose is an exact-fit aftermarket solution for the BMW "By-Pass Hose".

Coolant Hose

2X Entries Into Our F80 M3 Sweepstakes

T#:57616346

Part#: 17128620944

Ships in 4 Business Days

$ 43.99 USD

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$ 43.99 USD

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Keep your European powertrain running at optimal operating temperatures with a high-grade coolant hose replacement.

Hose F Engine Inlet-Changeover Valve - F22, F23, F30, F31, F32, F33, ...

T#:56110319

Part#: 17125B3AE07

In Stock

6% off MSRP $ 104.99

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

$ 98.99 USD

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6% off MSRP

$ 104.99

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

$ 98.99 USD

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Meyle - Water Pump - N47

5X Entries Into Our F80 M3 Sweepstakes

T#:58453427

Part#: 11518516204

Ships in 9 Business Days

$ 125.99 USD

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$ 125.99 USD

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Meyle Water Pump - Engine Cooling - BMW EXX, FXX

5X Entries Into Our F80 M3 Sweepstakes

T#:52621854

Part#: MWP0663

Ships on Oct 22, 2026

$ 284.99 USD

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$ 284.99 USD

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For BMW technicians and DIY enthusiasts, the MEYLE MWP0663 water pump represents a reliable solution for cooling system overhauls.

Coolant Hose

2X Entries Into Our F80 M3 Sweepstakes

T#:57616350

Part#: 11537643177

Back Ordered

$ 64.99 USD

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$ 64.99 USD

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Maintain maximum thermal efficiency on the track or the street with this precision-engineered turbocharger coolant line by Rein.

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