BMW Cooling System Parts & Accessories for BMW 4 Series F32 (2014+)

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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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Mosselman MSL Oil Thermostat Installation Kit
Mosselman MSL Oil Thermostat Installation Kit
Mosselman Turbosystems - Corporate Logo
T#:26404801
Part#: 030210012
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$ 27.99 USD
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Prevent costly oil leaks when installing a new MSL oil cooler from Mosselman. These high-quality rubber gaskets ensure your oil thermostat is sealed properly, guaranteeing peak performance and long service life.

Kit includes:

2x Oil Pressure Hose O-Ring 1x Oil Filter Housing Gasket

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N55 Mosselman Billet Oil Thermostat
N55 Mosselman Billet Oil Thermostat
Mosselman Turbosystems - Corporate Logo
T#:4621130
Part#: OTN55.T85
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$ 399.99 USD
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**** DOES NOT INCLUDE HARDWARE ****** Hardware - ES4772301 The N55 engine is no stranger to oil cooling problems, that�s why we recommend installing the MSL Oil Thermostat. The standard oil thermostat will reach around 120 degrees Celsius with a normal driving style. The MSL Oil Thermostat will open at a lower temperature than the standard oil thermostat (at 85 degrees Celsius) and will keep the temperature stable between 95 and 105 degrees Celsius. Installing the MSL thermostat ensures a cooler oil temperature which will result in more stable performance, but above all this improves the reliability of the engine. It is recommended to install the thermostat, especially for cars that are tuned. The Thermostat is plug-and-play and made out of a solid block of high-grade aluminum at our own facility. It is equipped with a real thermostat, not an always open solution. The oil will still reach the operating temperature at the same time as a stock thermostat Features Include: 20�C/68F Lower Than Stock Rock Solid Housing - CNC machined housing. Real Thermostat - Equipped with a real thermostat, not an always open solution. For use in hot and cold climates Quick Installation - Takes only 30 minutes to install.
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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
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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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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 1 Business Day
$ 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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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
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$ 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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VTT B58 Billet/Silicone Coolant Hose Kit - Blue - B58 Gen1
VTT B58 Billet/Silicone Coolant Hose Kit - Blue - B58 Gen1
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Vargas Turbo Technologies - Corporate Logo
T#:27805179
Part#: B58-BSCHK-BLU
Ships in 10 Business Days
$ 556.99 USD
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$ 556.99 USD
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Upgrade your cooling system with this kit, designed to address common issues with factory plastic cooling hose connectors and hoses. This kit features high-quality upgrades, including 6061-T6 billet aluminum connectors and 6-ply silicone hoses, ensuring durability and reliability.

Included in this comprehensive kit are:

Upper Radiator Hose (OEM Part 17128616548) Lower Radiator Hose (OEM Part 17128633482) Expansion Tank Hose (OEM Part 17128620944) Upper Vent Hose (OEM Part 17128616555)

Say goodbye to brittle plastic and dried-out hoses, and enjoy a more robust and long-lasting cooling system for your vehicle.

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VTT B58 Billet/Silicone Coolant Hose Kit - Black - B58 Gen1
VTT B58 Billet/Silicone Coolant Hose Kit - Black - B58 Gen1
2X Entries Into Our F80 M3 Sweepstakes
Vargas Turbo Technologies - Corporate Logo
T#:27805174
Part#: B58-BSCHK-BLK
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$ 556.99 USD
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$ 556.99 USD
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Upgrade your cooling system with this kit, designed to address common issues with factory plastic cooling hose connectors and hoses. This kit features high-quality upgrades, including 6061-T6 billet aluminum connectors and 6-ply silicone hoses, ensuring durability and reliability.

Included in this comprehensive kit are:

Upper Radiator Hose (OEM Part 17128616548) Lower Radiator Hose (OEM Part 17128633482) Expansion Tank Hose (OEM Part 17128620944) Upper Vent Hose (OEM Part 17128616555)

Say goodbye to brittle plastic and dried-out hoses, and enjoy a more robust and long-lasting cooling system for your vehicle.

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Dinan High-Performance Heat Exchanger - F22/23 F3X B46/48 B58
Dinan High-Performance Heat Exchanger - F22/23 F3X B46/48 B58 ...
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Dinan - Corporate Logo
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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Radiator - N20 2.0L & N55 3.0L Engine
Radiator - N20 2.0L & N55 3.0L Engine
For vehicles with an automatic or sport automatic transmission only
Nissens - Corporate Logo
T#:381279
Part#: 17117618807
In Stock
$ 217.99

This product was last offered at the strikethrough price on
04-21-2026

$ 191.99 USD
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Ensure optimal engine cooling performance for your BMW N20 2.0L & N55 3.0L Engines with Turner Motorsport's Nissens Radiator. Designed to withstand the demands of high-performance engines, this replacement radiator from Nissens ensures efficient heat dissipation, keeping your engine at an optimal operating temperature. With a direct fit for easy installation, this radiator is the perfect solution to keep your BMW running smoothly.

  • Direct replacement for BMW N20 2.0L & N55 3.0L Engines
  • Ensures efficient heat dissipation for optimal engine cooling
  • High-quality construction for durability and reliability
  • Easy installation with direct fit design
  • Maintains engine performance and longevity
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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 in 10 Business Days
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$ 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.
Vargas Coolant Hose Kit - Red - BMW F2X, F3X
Vargas Coolant Hose Kit - Red - BMW F2X, F3X
2X Entries Into Our F80 M3 Sweepstakes
Vargas Turbo Technologies - Corporate Logo
T#:51848505
Part#: VTT-B58-CFHKRED
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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.
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
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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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Vargas Radiator Hose Kit - Blue - BMW B58 Gen 1
Vargas Radiator Hose Kit - Blue - BMW B58 Gen 1
2X Entries Into Our F80 M3 Sweepstakes
Vargas Turbo Technologies - Corporate Logo
T#:51848510
Part#: VTT-B58-RHKBLUE
In Stock
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$ 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.
Radiator
Radiator
Nissens - Corporate Logo
T#:381278
Part#: 17117600520
Ships in 1 Business Day
$ 296.99 USD
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$ 296.99 USD
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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 in 10 Business Days
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$ 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.
OEM Nissens Engine Oil Cooler - BMW B58 & B58TU 3.0L (B58A & B58D)
OEM Nissens Engine Oil Cooler - BMW B58 & B58TU 3.0L (B58A & B58D) ...
Nissens - Corporate Logo
T#:27905106
Part#: 11428583901
Ships in 2 Business Days
$ 106.99

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

$ 103.99 USD
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Engine oil coolers help reduce the oil temperature, preventing the oil from breaking down prematurely and losing its lubricating properties. Engine oil coolers play a crucial role in regulating oil temperature, ensuring proper lubrication, and optimizing engine performance and longevity. Engine oil that is too hot drops in viscosity and does not provide adequate lubrication to sensitive engine components such as bearings, which can fail catastrophically if not properly lubricated. If your engine oil cooler has been damaged or has failed we recommend replacing it to ensure no damage occurs to your engine.
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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 in 10 Business Days
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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 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 in 10 Business Days
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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 in 10 Business Days
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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.
Vargas Lower Radiator Hose - Black - BMW B58 Gen 1
Vargas Lower Radiator Hose - Black - BMW B58 Gen 1
2X Entries Into Our F80 M3 Sweepstakes
Vargas Turbo Technologies - Corporate Logo
T#:51848508
Part#: VTT-B58-LRHBLK
Ships in 10 Business Days
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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 Coolant Block-Off - BMW B58 Engine
Vargas Billet Coolant Block-Off - BMW B58 Engine
2X Entries Into Our F80 M3 Sweepstakes
Vargas Turbo Technologies - Corporate Logo
T#:52094566
Part#: VTTFAB040BLKB58
Ships in 10 Business Days
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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.
N55 Mosselman Billet Oil Thermostat - Black
N55 Mosselman Billet Oil Thermostat - Black
Mosselman Turbosystems - Corporate Logo
T#:50101777
Part#: 30210057
Ships in 7 Business Days
$ 399.00 USD
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$ 399.00 USD
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The N55 engine is no stranger to oil cooling problems, that’s why we recommend installing the MSL Oil Thermostat. The standard oil thermostat will reach around 120 degrees Celsius with a normal driving style. The MSL Oil Thermostat will open at a lower temperature than the standard oil thermostat (at 85 degrees Celsius) and will keep the temperature stable between 95 and 105 degrees Celsius. Installing the MSL thermostat ensures a cooler oil temperature which will result in more stable performance, but above all this improves the reliability of the engine. It is recommended to install the thermostat, especially for cars that are tuned.
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