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BMW Cooling System Parts & Accessories for BMW 2 Series F23 (2015+)

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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 Assembly

T#:15511823

Part#: 11537598865

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05-03-2026

$ 70.19 USD

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Replace your thermostat housing at any signs of leaks or premature failure. Includes housing. Does not include a housing gasket.

Bav Auto Spill-Proof Coolant / Antifreeze Funnel

T#:580395

Part#: B8800082

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05-03-2026

$ 28.04 USD

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$ 32.99

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$ 28.04 USD

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Multiple adapters include to fit a variety of vehicles.

BMW N47 N55 Expansion Tank

T#:17704781

Part#: 17137642160

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05-03-2026

$ 79.19 USD

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BMW N47 N55 Expansion Tank from Turner Motorsport is a high-quality replacement designed to address issues with cracked or damaged coolant expansion tanks. Engineered for durability and performance, this expansion tank ensures reliable cooling system function.

Durable Construction: Built to withstand high temperatures and pressure, ensuring long-term reliability.
Direct Replacement: Engineered as a precise fit for BMW N47 and N55 engines, making installation straightforward and hassle-free.
Enhanced Cooling Efficiency: Maintains optimal coolant levels and pressure for effective engine cooling.
High-Quality Materials: Manufactured from premium materials to resist cracking and leaks.

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Bav Auto Fan Clutch Wrench - 32mm

T#:580348

Part#: B8800019

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05-03-2026

$ 23.99 USD

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Used to remove your fan clutch

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

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

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$ 124.94 USD

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OEM Bosch Auxillary Water Pump - F8X F3X F22/23 G30 B58 3.0L ...

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

T#:639203

Part#: 0392023509

In Stock

$ 89.99

This product was last offered at the strikethrough price on
02-12-2026

$ 65.99 USD

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$ 65.99 USD

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Auxillary water pumps are electric water pumps that pump coolant to critical components of your BMW. A failing pump can cause excessive noise and intermittent cooling issues, leading to potential damage if not replaced quickly enough. If the electric motor dies completely, chances are any parts downstream from the pump will overheat and fail, leading to costly repairs and replacements. Prevent this from happening by installing this brand new Auxillary Water Pump from OEM Bosch! Replaces the following BMW part numbers: 11517643949, 11517850568, 11518605322, 11518643397, 11518671654, 11518679885, 64116834917, 64116834923, 64119147359, 64119484254, 64219372723

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BMW N20 2.0L Turbo Supply Cooling Line

T#:17704760

Part#: 11538663516

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05-03-2026

$ 37.59 USD

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BMW N20 2.0L Turbo Supply Cooling Line is a crucial component designed to ensure optimal cooling for the turbocharger in BMW vehicles equipped with the N20 2.0L turbo engine. This high-quality cooling line maintains proper coolant flow to the turbo, preventing overheating and ensuring reliable performance.

Optimal Cooling: Effectively cools the turbocharger to prevent overheating and maintain performance.
Durable Construction: Built with high-quality materials for long-lasting reliability.
Precise Fitment: Designed specifically for BMW N20 2.0L turbo engines.
Enhanced Performance: Helps in sustaining the turbo's efficiency and longevity.
Easy Installation: Direct replacement part for a hassle-free installation.

Maintain the efficiency and longevity of your BMW’s turbocharger with this essential cooling line, designed for superior performance and durability.

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BMW N20 Turbo Cooling Return Line

T#:17704762

Part#: 11538663517

Ships on Aug 11, 2026

$ 68.99 USD

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BMW N20 Turbo Cooling Return Line

The BMW N20 Turbo Cooling Return Line is an essential component designed to optimize the performance and longevity of your turbocharger. Turner Motorsport offers this high-quality coolant return line, ensuring efficient cooling and preventing overheating of the turbo system. Engineered for a precise fit, this cooling return line integrates seamlessly with your BMW N20 engine, providing reliable and long-lasting performance.

Benefits:

Enhances cooling efficiency to prevent turbocharger overheating
Constructed from durable materials for extended reliability
Precisely engineered for a perfect fit on BMW N20 engines
Easy to install with minimal modifications required
Helps maintain consistent turbocharger performance by managing coolant flow effectively

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Bav Auto Angled Hose Pinch Plier Set - 2pc

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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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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Dinan High-Performance Heat Exchanger - F22/23 F3X B46/48 B58 ...

Call In Or Chat For Best Price!

T#:21045539

Part#: D780-0002

Ships in 5 Business Days

11% off MSRP $ 658.99

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

$ 584.99 USD

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11% off MSRP

$ 658.99

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

$ 584.99 USD

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The factory B4x/B58 heat exchanger is not built to cater to the rigorous demands often associated with a modified build. The thin core is easily overwhelmed with IAT's rising dramatically once pushed beyond a few successive WOT pulls or even a few minutes at the track. This elevation in temperature gives way to the factory ECU fail safes pulling timing and reducing overall power in order to keep the system from overheating to the point of permanent damage. On an application where enjoyment is directly attributed to pushing the platform to its limits this constraint to cooling presents a challenge for the automotive enthusiast. The Dinan B4x/B58 heat exchanger for the F2x/F3x chassis assists in mitigating these issues with a more robust core (48mm thick Dinan core vs. 27mm thick OEM core) that wields 78% more heat transfer surface area for improved cooling capacity. The significant increase in core thickness requires unique "L" shaped end tanks to be incorporated as well, which also contributes to the overall thermal mass (ability to absorb, store, and release heat) improvement beyond the OEM setup. With up to a 15° IAT delta recorded over stock the Dinan heat exchanger is ready, and able, to assist in extending your vehicles ability to deliver maximum performance time and time again for your driving enjoyment! Features: Average of 8° reduction in IAT's with a maximum reduction of 15° over 15 successive WOT pulls Reduces the tendency to heat soak / go in to limp mode 48mm thick Dinan cooler vs. 27mm thick stock cooler 78% more cooling surface area and volume than stock 100% TIG welded and pressure tested Installation hardware included (inclusive of xDrive specific transmission oil cooler brackets) NOTE: Due to the enlarged core and unique "L" shaped endtanks minor modification to the plastic core stack shroud may be required with some factory configurations ( particularly those with the optional OEM hot climate heat exchanger). Consult the installation PDF for full documentation on what exactly that entails. (https://documents.dinancars.com/d780-0002.pdf)

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AutoTecknic Dry Carbon Coolant Expansion Tank Cap Cover - Gloss Carbo...

T#:39497984

Part#: BM-0803-GC

Ships in 7 Business Days

$ 74.99 USD

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Turner Motorsport offers the AutoTecknic Dry Carbon Coolant Expansion Tank Cap Cover - Gloss Carbon as the perfect addition for BMW owners looking to elevate their engine bay’s appearance with premium materials and precision engineering.

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Meyle - Water Pump with Gasket

T#:40342902

Part#: 11518638026

In Stock

$ 97.99 USD

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$ 97.99 USD

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Ensure your BMW stays cool and runs efficiently with the trusted performance of the Meyle Water Pump with Gasket 313 220 0031.

Meyle Coolant Expansion Tank - F22/23 230/M240, F3X 330/340/430/440 B...

We Price Match - Give Us A Call or Chat!

T#:5704977

Part#: 17138677649

In Stock at Vendor

$ 164.99

This product was last offered at the strikethrough price on
03-20-2026

$ 123.99 USD

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$ 123.99 USD

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We have found that the expansion tanks should be replaced based on age as well as condition. Expansion tanks seem to have a lifespan of fewer than six to eight years before they show signs of fatigue and wear. Pre-emptively replacing the expansion tank as part of an overall maintenance plan can prevent you from getting stranded from a sudden failure later on.

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Radiator

T#:41188155

Part#: 17118678027

In Stock at Vendor

$ 367.99

This product was last offered at the strikethrough price on
05-08-2026

$ 329.99 USD

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$ 329.99 USD

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OEM Bosch Charge Air Cooler Water Pump

T#:54744791

Part#: 039202411C

In Stock at Vendor

$ 143.99 USD

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$ 143.99 USD

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Coolant pump for the charge air cooling system.

Radiator Fan - F3x N20

T#:54852035

Part#: 17428641963

Special Order: No Guaranteed ETA

$ 531.99 USD

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$ 531.99 USD

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Engine bay radiator fan shroud assembly for N20 F22/F30 platforms.

Meyle Charge Air Cooler Expansion Tank - F22, F23, F30, F31, F32, F33...

T#:40714794

Part#: 17138617045

Special Order: No Guaranteed ETA

$ 72.99 USD

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$ 72.99 USD

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Keep your turbocharged BMW operating at its best with the Meyle Charge Air Cooler Expansion Tank 314 223 0025.

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