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BMW Cooling System Parts & Accessories for BMW F25 X3 xDrive28i N20 2.0L

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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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Water Pump And Thermostat Kit - N20

10X Entries Into Our F80 M3 Sweepstakes

T#:554053

Part#: 11517604027KT1

In Stock

Sale - Save 25% $ 461.99

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

$ 344.49 USD

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$ 461.99

This product was last offered at the strikethrough price on
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$ 344.49 USD

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The N20/n26 engined cars already suffer from reduced cooling area because of the factory intercooler, tight space under the hood, and of course heat from the turbo(s). BMW addressed these challenges a number of ways, including a dynamic, 'smart' electric water pump with increased output compared to normally aspirated models. The cooling demands mean additional stress on the major cooling components, especially the water pump and thermostat.

Kit includes:

Mahle-Behr thermostat
Pierburg water pump
Genuine BMW coolant
Mounting hardware required for both the thermostat and water pump

This item fits the following BMWs:
2014+ F22 BMW 228i 228i xDrive
2014+ F23 BMW 228i 228i xDrive
2012+ F30 BMW 328i 328i xDrive - Sedan
2013+ F31 BMW 328i xDrive - Wagon
2013+ F32 BMW 428i 428i xDrive - Coupe
2013+ F33 BMW 428i Convertible 428i xDrive Convertible - Convertible
2014+ F34 BMW 328i xDrive GT - Gran Tourismo
2014+ F36 BMW 428i Gran Coupe 428i xDrive Gran Coupe
2012+ F10 BMW 528i 528i xDrive
2011+ F25 BMW X3 xDrive28i
2015+ F26 BMW X4 xDrive28i
2009+ E89 BMW Z4 sDrive28i

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Bav Auto Spill-Proof Coolant / Antifreeze Funnel

10X Entries Into Our F80 M3 Sweepstakes

T#:580395

Part#: B8800082

In Stock

Sale - Save 15% $ 33.99

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

$ 28.99 USD

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$ 33.99

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.

Race German Coolant Temperature Sender Adapter - M12x1.5

T#:6827887

Part#: RGCTSAM12

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 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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Bav Auto Fan Clutch Wrench - 32mm

10X Entries Into Our F80 M3 Sweepstakes

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

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

$ 23.99 USD

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Used to remove your fan clutch

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

10X Entries Into Our F80 M3 Sweepstakes

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

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$ 146.99

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

$ 124.94 USD

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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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Rein Coolant Hose - BMW F22/23 F3X

2X Entries Into Our F80 M3 Sweepstakes

T#:594310

Part#: 11537639997

In Stock

$ 57.99 USD

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$ 57.99 USD

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Water pipes and coolant hoses are essential for proper cooling. If they are cracked, they are going to need to be replaced as soon as possible to avoid overheating your engine.

Rein Coolant Hose - BMW F22/23 F3X

2X Entries Into Our F80 M3 Sweepstakes

T#:591823

Part#: 11537639998

In Stock

$ 42.99 USD

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$ 42.99 USD

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Connects from water pump to block

Bav Auto Angled Hose Pinch Plier Set - 2pc

10X Entries Into Our F80 M3 Sweepstakes

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

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$ 32.99

This product was last offered at the strikethrough price on
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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BMW Turbo Cooling Line

2X Entries Into Our F80 M3 Sweepstakes

T#:46478582

Part#: CHT0690

Back Ordered

$ 56.00

This product was last offered at the strikethrough price on
04-28-2026

$ 55.99 USD

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$ 55.99 USD

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Your turbo is constantly working under extreme heat and pressure, generating serious boost every time you get on the gas. The turbo cooling lines are responsible for circulating coolant through the turbocharger, keeping temperatures in check and safeguarding internal components from excessive heat. With time, these lines can corrode, crack, or clog—compromising coolant flow and system efficiency. If left unchecked, a failing line can lead to overheating, loss of performance, or even costly turbo damage. Why replacing them matters: Protect your turbo – Ensures proper cooling to prevent heat soak and extend turbo life. Stop leaks early – Prevent small coolant drips from turning into bigger, more expensive problems. Keep performance consistent – Reliable cooling means steady boost and dependable operation. Don’t let a tired cooling line put your turbo at risk—replace it and keep your forced-induction system performing at its best.

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Rein Water Pump Service Kit - N20

Production years 2013-2014

2X Entries Into Our F80 M3 Sweepstakes

T#:14023861

Part#: 11518635089-4

Ships in 4 Business Days

$ 898.99 USD

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$ 898.99 USD

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Kits include: water pump thermostat assembly head to thermostat hose w/ aluminum flange WP to engine hose WP to thermostat hose all necessary clamps and hardware This Rein water pump service kit addresses common coolant hose plastic flange failure and ensures that the water pump replacement repair is done right the first time. The water pump and thermostat are OEM Use of OE or Pentosin NF-G11 coolant is recommended

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Rein Turbo Cooling Line - Return

2X Entries Into Our F80 M3 Sweepstakes

T#:17771598

Part#: 11538663517

Ships in 2 Business Days

$ 86.99

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

$ 76.99 USD

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$ 76.99 USD

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Rein turbo hoses are manufactured with premium OE quality material to offer maximum protection from premature failures.

Lower Radiator Coolant Hose

2X Entries Into Our F80 M3 Sweepstakes

T#:594374

Part#: 17127639213

Ships in 4 Business Days

$ 51.99

This product was last offered at the strikethrough price on
08-13-2026

$ 37.99 USD

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$ 37.99 USD

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Replacement Lower Radiator Coolant Hose from Rein

Meyle Thermostat Housing - BMW E84, F10, F22, F26, F30, F31, F32, F33...

5X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

T#:5704976

Part#: 11538635689

Ships on Oct 1, 2026

$ 72.99 USD

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$ 72.99 USD

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When it comes to your temperature gauge on your instrument cluster your thermostat plays a large role in where that temperature needle ends up. There are many cases where the vehicle will run a bit cool according to that gauge, oftentimes meaning the thermostat has failed and is stuck open allowing coolant to continuously circulate. The other more damaging side is when it closes shut and keeps the engine from cooling down properly. All vehicles are designed to operate in an ideal temperature range for the ultimate efficiency, life, and performance.

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OEM Rein Coolant Expansion Tank Overflow Hose - BMW F25 X3, F26 X4 N5...

2X Entries Into Our F80 M3 Sweepstakes

T#:45757476

Part#: 17128651298

Ships in 4 Business Days

$ 31.99 USD

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$ 31.99 USD

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This hose connects the expansion tank to the upper radiator hose. If your coolant expansion tank hose is cracked or leaking, replace it early to prevent further coolant loss and eventual overheating.

Coolant Expansion Tank Cap

T#:379621

Part#: 17117639020

Back Ordered

$ 17.99 USD

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$ 17.99 USD

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Quality aftermarket coolant expansion tank cap.

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