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
Packaged by Turner - Corporate Logo
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
Free Shipping
Sale - Save 25%
$ 461.99

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

$ 344.49 USD
Free Shipping

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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Water Pump - N20 N26
10X Entries Into Our F80 M3 Sweepstakes
Bavarian Autosport - Corporate Logo
T#:29666093
Part#: 11518635089
In Stock
Sale - Save 20% $ 343.99

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

$ 275.19 USD
Free Shipping on orders $49 and up
Sale - Save 20%
$ 343.99

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

$ 275.19 USD
Free Shipping on orders $49 and up

A failing water pump can show early warning signs like coolant leaks or a whining noise from the engine bay—but with electric water pumps, failure can be sudden, often with no warning beyond rapid overheating.

If you suspect your water pump is on its way out, prompt replacement is critical to avoid engine damage. Stay alert to any changes in cooling system performance.

Note: Aluminum mounting bolts are single-use and must be replaced during installation.

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Rein Coolant Hose - BMW F22/23 F3X
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:594310
Part#: 11537639997
In Stock
$ 57.99 USD
Free Shipping on orders $49 and up
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.

Thermostat Assembly
Fits only the N52 engine
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:15445600
Part#: 11537586783
Ships in 2 Business Days
$ 106.99 USD
Free Shipping on orders $49 and up
$ 106.99 USD
Free Shipping on orders $49 and up
A common failing point is the water pump thermostat in some cars. Fix these issues before or at early signs of failure with this OE thermostat replacement.

Rein Coolant Hose - BMW F22/23 F3X
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:591823
Part#: 11537639998
In Stock
$ 42.99 USD
Free Shipping on orders $49 and up
Connects from water pump to block
URO Parts Expansion Tank Hose - 17128651298
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:29002183
Part#: 17128651298
In Stock
$ 19.99 USD
Free Shipping on orders $49 and up

A leaking expansion tank hose can quickly lead to coolant loss, posing a potential overheating risk. This hose is inexpensive and easy to replace, making it a simple repair anyone can perform in minutes.

Features:

Guaranteed fitment Precision-molded to OE recovery tank hose shape for easy installation Resistant to engine heat and ozone Made from durable ECD (Electro Chemical Degradation)-resistant EPDM material, preventing electrolysis from degrading the rubber internally Temperature rating: -40º F to 275º F (-40º C to 135º C) 24-Month Unlimited Mileage Warranty URO Parts offers more than 8,000 high-quality spare parts, many of which are specifically designed to replace factory BMW components. Their business was founded on the premise of producing parts that adhere to the highest standards of precision, materials, and workmanship. Each part is closely evaluated by a team of industry professionals to determine how to offer the best blend of durability, function, and price. If you're looking for quality replacement components at a reasonable price, look no further than URO Parts.

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BMW Auxiliary Water Pump
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:46753502
Part#: 11518635089
Ships in 2 Business Days
$ 377.99 USD
Free Shipping on orders $49 and up
If your water pump is on its way out, you might spot coolant leaks or hear a faint whining sound from under the hood. Don’t wait—if you suspect it’s failing, replace it before it leaves you stranded. The tricky part with electric water pumps is that they can fail silently—no noise, no leaks—just sudden overheating. Stay alert for early warning signs that it’s time to swap out your water pump and keep your cooling system running strong.
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BMW Turbo Cooling Line
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:46478582
Part#: CHT0690
Back Ordered
$ 56.00

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

$ 55.99 USD
Free Shipping on orders $49 and up
$ 55.99 USD
Free Shipping on orders $49 and up
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
Rein - Corporate Logo
T#:14023861
Part#: 11518635089-4
Ships in 4 Business Days
$ 898.99 USD
Free Shipping on orders $49 and up
$ 898.99 USD
Free Shipping on orders $49 and up
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
Rein - Corporate Logo
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
Free Shipping on orders $49 and up
$ 76.99 USD
Free Shipping on orders $49 and up
Rein turbo hoses are manufactured with premium OE quality material to offer maximum protection from premature failures.
URO Turbocharger Cooling Supply Line - 11538663516
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:28537510
Part#: 11538663516
Ships in 2 Business Days
$ 49.99 USD
Free Shipping on orders $49 and up

This hose assembly delivers coolant to the turbocharger, aiding in heat dissipation. Promptly replace any leaking coolant lines to prevent engine and turbocharger damage.

Key Features:

Ensured fitment for your vehicle Precision-formed to match the length and shape of OE turbocharger coolant lines, ensuring proper appearance and function Equipped with the correct end fittings for easy installation and leak-free performance Constructed using high-quality materials to withstand coolant exposure and turbo heat URO Parts offers more than 8,000 high-quality spare parts, many of which are specifically designed to replace factory BMW components. Their business was founded on the premise of producing parts that adhere to the highest standards of precision, materials, and workmanship. Each part is closely evaluated by a team of industry professionals to determine how to offer the best blend of durability, function, and price. If you're looking for quality replacement components at a reasonable price, look no further than URO Parts.

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URO Turbocharger Cooling Return Line - 11538853293
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:28537511
Part#: 11538853293
Ships in 2 Business Days
$ 56.99 USD
Free Shipping on orders $49 and up

This hose assembly directs coolant away from the turbocharger, allowing cooler coolant from the radiator to flow through. Replace any leaking coolant lines promptly to prevent engine and turbocharger damage.

Key Features:

Ensured fitment for your vehicle Precision-formed to match the length and shape of OE turbocharger coolant lines, ensuring proper appearance and function Equipped with the correct end fittings for easy installation and leak-free performance Constructed using high-quality materials to withstand coolant exposure and turbo heat URO Parts offers more than 8,000 high-quality spare parts, many of which are specifically designed to replace factory BMW components. Their business was founded on the premise of producing parts that adhere to the highest standards of precision, materials, and workmanship. Each part is closely evaluated by a team of industry professionals to determine how to offer the best blend of durability, function, and price. If you're looking for quality replacement components at a reasonable price, look no further than URO Parts.

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BMW Coolant Pipe - BMW F22/23 F3X
2X Entries Into Our F80 M3 Sweepstakes
For vehicles with automatic transmissions only.
URO - Corporate Logo
T#:50031885
Part#: 11537639997
Ships in 2 Business Days
$ 49.99 USD
Free Shipping on orders $49 and up
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. Wear is easy to see on these rubber hoses. Bulges, cracking, splitting at connections, and the loss of flexibility are usually big indicators that they are reaching the ends of their lives. Replace them whenever this wear is identified. Genuine BMW Feed Line - This item fits the following BMW Chassis: E89 Z4,F10,F22,F30,F31,F32,F33,F34,F36 Fits BMW Engines including: N20,N26
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Lower Radiator Coolant Hose
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
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
Free Shipping on orders $49 and up
$ 37.99 USD
Free Shipping on orders $49 and up
Replacement Lower Radiator Coolant Hose from Rein
Rein - Corporate Logo
T#:45757476
Part#: 17128651298
Ships in 4 Business Days
$ 31.99 USD
Free Shipping on orders $49 and up
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.

Meistersatz - Corporate Logo
T#:379621
Part#: 17117639020
Back Ordered
$ 17.99 USD
Free Shipping on orders $49 and up
Quality aftermarket coolant expansion tank cap.