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
Thermostat Assembly
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Bavarian Autosport - Corporate Logo
T#:15511823
Part#: 11537598865
In Stock
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This product was last offered at the strikethrough price on
08-11-2026

$ 71.09 USD
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08-11-2026

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Replace your thermostat housing at any signs of leaks or premature failure. Includes housing. Does not include a housing gasket.
BMW N47 N55 Expansion Tank
BMW N47 N55 Expansion Tank
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Bavarian Autosport - Corporate Logo
T#:17704781
Part#: 17137642160
In Stock
Sale - Save 20% $ 98.99

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

$ 79.19 USD
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$ 98.99

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05-03-2026

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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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VTT Billet Coolant Reservoir Cap - Anodized Blue - Most BMWs 2006+ (E/F/G-Chassis)
VTT Billet Coolant Reservoir Cap - Anodized Blue - Most BMWs 2006+ (E...
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Vargas Turbo Technologies - Corporate Logo
T#:7530036
Part#: COOLANTCAPBLUE
In Stock
$ 79.99 USD
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$ 79.99 USD
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VTT is proud to offer their billet replacement for the factory plastic Coolant Reservoir cap. This cap does away with the weak plastic cap while adding some pop, and color to your engine bay. This coolant cap retains ALL of the factory provisions by simply allowing you to snap the factory pressure-relief into the new Billet Cap. VTT also designed these caps to complement their N5X Billet Oil caps, N5XBillet Oil filter housing caps, and Billet Power Steering cap, so all 4 will have the same design. These caps are offered in 4 colors – Red, Black, Blue, and Clear anodized Replaces Genuine BMW Reservoir Cap # 17117639020 Note: Fitment includes 99% of all BMW with a coolant Reservoir tank from the E series forward, meaning then fit even the brand New G8X M3/4 with the S58, all B58, etc. If your BMW is an E90 or newer this cap most likely will fit
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Race German Coolant Temperature Sender Adapter - M12x1.5
Race German Coolant Temperature Sender Adapter - M12x1.5
Race German - Corporate Logo
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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VTT Billet Coolant Reservoir Cap - Anodized Red - Most BMWs 2006+ (E/F/G-Chassis)
VTT Billet Coolant Reservoir Cap - Anodized Red - Most BMWs 2006+ (E/...
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Vargas Turbo Technologies - Corporate Logo
T#:7530034
Part#: COOLANTCAPRED
Ships in 2 Business Days
$ 79.99 USD
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$ 79.99 USD
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VTT is proud to offer their billet replacement for the factory plastic Coolant Reservoir cap. This cap does away with the weak plastic cap while adding some pop, and color to your engine bay. This coolant cap retains ALL of the factory provisions by simply allowing you to snap the factory pressure-relief into the new Billet Cap. VTT also designed these caps to complement their N5X Billet Oil caps, N5XBillet Oil filter housing caps, and Billet Power Steering cap, so all 4 will have the same design. These caps are offered in 4 colors – Red, Black, Blue, and Clear anodized Replaces Genuine BMW Reservoir Cap # 17117639020 Note: Fitment includes 99% of all BMW with a coolant Reservoir tank from the E series forward, meaning then fit even the brand New G8X M3/4 with the S58, all B58, etc. If your BMW is an E90 or newer this cap most likely will fit
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Race German Coolant Temperature Sender Adapter - 1/8NPT
Race German Coolant Temperature Sender Adapter - 1/8NPT
Race German - Corporate Logo
T#:6827888
Part#: RGCTSA1/8NPT
In Stock
$ 35.99 USD
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$ 35.99 USD
Free Shipping on orders $49 and up
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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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BMW N20 2.0L Turbo Supply Cooling Line
BMW N20 2.0L Turbo Supply Cooling Line
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Bavarian Autosport - Corporate Logo
T#:17704760
Part#: 11538663516
In Stock
Sale - Save 20% $ 46.99

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

$ 37.59 USD
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Sale - Save 20%
$ 46.99

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

$ 37.59 USD
Free Shipping on orders $49 and up
Add to Wish List

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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VTT Billet Coolant Reservoir Cap - Anodized Clear - Most BMWs 2006+ (E/F/G-Chassis)
VTT Billet Coolant Reservoir Cap - Anodized Clear - Most BMWs 2006+ (...
This coolant cap retains ALL of the factory provisions by simply allowing you to snap t...
2X Entries Into Our F80 M3 Sweepstakes
Vargas Turbo Technologies - Corporate Logo
T#:7530035
Part#: COOLANTCAPRAW
Back Ordered
$ 78.99 USD
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$ 78.99 USD
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VTT is proud to offer their billet replacement for the factory plastic Coolant Reservoir cap. This cap does away with the weak plastic cap while adding some pop, and color to your engine bay. This coolant cap retains ALL of the factory provisions by simply allowing you to snap the factory pressure-relief into the new Billet Cap. VTT also designed these caps to complement their N5X Billet Oil caps, N5XBillet Oil filter housing caps, and Billet Power Steering cap, so all 4 will have the same design. These caps are offered in 4 colors – Red, Black, Blue, and Clear anodized Replaces Genuine BMW Reservoir Cap # 17117639020 Note: Fitment includes 99% of all BMW with a coolant Reservoir tank from the E series forward, meaning then fit even the brand New G8X M3/4 with the S58, all B58, etc. If your BMW is an E90 or newer this cap most likely will fit
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BMW N20 Turbo Cooling Return Line
BMW N20 Turbo Cooling Return Line
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Bavarian Autosport - Corporate Logo
T#:17704762
Part#: 11538663517
In Stock
$ 68.99 USD
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$ 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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Vargas Coolant Hose Kit - Red - BMW F2X, F3X
Vargas Coolant Hose Kit - Red - BMW F2X, F3X
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Vargas Turbo Technologies - Corporate Logo
T#:51848505
Part#: VTT-B58-CFHKRED
Ships on Sep 30, 2026
New Item
$ 559.99 USD
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$ 559.99 USD
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Protect your investment with the VTT Full Coolant Hose Upgrade Kit, specifically engineered for the BMW B58 engine.
Vargas Billet Upper Coolant Line Block-Off - BMW N55 & S55 Engines
Vargas Billet Upper Coolant Line Block-Off - BMW N55 & S55 Engines ...
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Vargas Turbo Technologies - Corporate Logo
T#:52094575
Part#: VTT-FAB-047
Ships on Sep 30, 2026
New Item
$ 21.99 USD
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$ 21.99 USD
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When building a custom turbo kit, the "VTT-FAB-047" Block-Off Flange is an essential component for managing your BMW's thermal systems.
VTT Billet Coolant Reservoir Cap - Anodized Black - Most BMWs 2006+ (E/F/G-Chassis)
VTT Billet Coolant Reservoir Cap - Anodized Black - Most BMWs 2006+ (...
2X Entries Into Our F80 M3 Sweepstakes
Vargas Turbo Technologies - Corporate Logo
T#:7530033
Part#: COOLANTCAPBLK
In Stock
$ 79.99 USD
Free Shipping
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$ 79.99 USD
Free Shipping
Add to Wish List
VTT is proud to offer their billet replacement for the factory plastic Coolant Reservoir cap. This cap does away with the weak plastic cap while adding some pop, and color to your engine bay. This coolant cap retains ALL of the factory provisions by simply allowing you to snap the factory pressure-relief into the new Billet Cap. VTT also designed these caps to complement their N5X Billet Oil caps, N5XBillet Oil filter housing caps, and Billet Power Steering cap, so all 4 will have the same design. These caps are offered in 4 colors – Red, Black, Blue, and Clear anodized Replaces Genuine BMW Reservoir Cap # 17117639020 Note: Fitment includes 99% of all BMW with a coolant Reservoir tank from the E series forward, meaning then fit even the brand New G8X M3/4 with the S58, all B58, etc. If your BMW is an E90 or newer this cap most likely will fit
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Vargas Radiator Hose Kit - Blue - BMW B58 Gen 1
Vargas Radiator Hose Kit - Blue - BMW B58 Gen 1
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Vargas Turbo Technologies - Corporate Logo
T#:51848510
Part#: VTT-B58-RHKBLUE
In Stock
New Item
$ 389.99 USD
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$ 389.99 USD
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Engineered for the BMW enthusiast who demands form and function, the VTT Radiator Hose Kit is the ultimate preventative maintenance upgrade.
Vargas Expansion Tank Coolant Hose - Blue - BMW B58 F2X F3X
Vargas Expansion Tank Coolant Hose - Blue - BMW B58 F2X F3X
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Vargas Turbo Technologies - Corporate Logo
T#:51848504
Part#: VTT-B58-CEBLUE
Ships on Sep 30, 2026
New Item
$ 59.99 USD
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$ 59.99 USD
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Elevate your BMW's engine bay while safeguarding your cooling system with the VTT B58 Expansion Tank Hose in Blue.
Vargas Billet Coolant Block-Off - BMW B58 Engine
Vargas Billet Coolant Block-Off - BMW B58 Engine
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Vargas Turbo Technologies - Corporate Logo
T#:52094566
Part#: VTTFAB040BLKB58
Ships on Sep 30, 2026
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$ 31.99 USD
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$ 31.99 USD
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Engineered for precision and durability, the VTT-FAB-040 B58 Block-Off Flange is the definitive solution for managing oil and coolant paths during fabrication.
Vargas Radiator Hose Kit - Red - BMW B58 Gen 1
Vargas Radiator Hose Kit - Red - BMW B58 Gen 1
2X Entries Into Our F80 M3 Sweepstakes
Vargas Turbo Technologies - Corporate Logo
T#:51848512
Part#: VTT-B58-RHKRED
Ships on Sep 30, 2026
New Item
$ 389.99 USD
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$ 389.99 USD
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The VTT Billet/Silicone Radiator Hose Kit in Red is the ultimate "set it and forget it" upgrade for the F2X and F3X 1, 2, 3, and 4 Series.
Vargas Lower Radiator Hose - Black - BMW B58 Gen 1
Vargas Lower Radiator Hose - Black - BMW B58 Gen 1
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Vargas Turbo Technologies - Corporate Logo
T#:51848508
Part#: VTT-B58-LRHBLK
Ships on Sep 30, 2026
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$ 222.99 USD
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$ 222.99 USD
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The VTT Billet/Silicone Lower Radiator Hose is a professional-grade replacement for the factory B58 Gen 1 lower radiator line.
Vargas Billet HMM Delete Kit - BMW B58TU
Vargas Billet HMM Delete Kit - BMW B58TU
Fits all B58 TU / Gen 2 B58 engines
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Vargas Turbo Technologies - Corporate Logo
T#:51672725
Part#: VTT-B58-COOLING-
Ships on Sep 30, 2026
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$ 199.99 USD
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$ 199.99 USD
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The VTT Billet B58 HMM Delete is for enthusiasts who want to remove the bulky, plastic factory coolant unit in favor of a robust, motorsport-oriented setup.
Vargas Remote Oil Cooler Adapter - BMW B58, Toyota A90/A91
Vargas Remote Oil Cooler Adapter - BMW B58, Toyota A90/A91
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Vargas Turbo Technologies - Corporate Logo
T#:51778122
Part#: VTT-B58-OIL-COOL
Ships on Sep 30, 2026
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$ 157.99 USD
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The VTT Billet B58 Remote Oil Cooler Adapter is an ideal upgrade for B58-powered platforms.

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