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BMW Cooling System Parts & Accessories for BMW X Series G05 X5 (2019+)

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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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Coolant Return Line

T#:53856300

Part#: 11538650087

In Stock at Vendor

$ 60.99 USD

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$ 60.99 USD

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Rein Automotive turbo hoses are engineered to meet these rigorous demands, providing the reliability required for both the track and the street.

Rein Aluminum Oil Filter Housing - BMW B58

T#:49404665

Part#: 11428583901

In Stock

$ 408.99 USD

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$ 408.99 USD

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For those who push their engines to the limit, "good enough" is a liability. Upgrade to the Rein HEU0116 Aluminum Oil Filter Housing—the professional’s choice for durability and peace of mind.

Electronic Thermostat And Coolant Distribution Module

T#:50311455

Part#: 11538843406

In Stock

Sale - Save 10% $ 397.99

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

$ 358.01 USD

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Sale - Save 10%

$ 397.99

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

$ 358.01 USD

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Rein Coolant Expansion Tank Kit - F97 F98 G01 G02 G05 G06 G07 - S58 B...

T#:55965839

Part#: 17138610661

Ships in 3 Business Days

$ 56.99 USD

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$ 56.99 USD

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Keep your ultimate driving machine cool under pressure with this replacement auxiliary expansion tank from Rein. On modern turbocharged BMWs, the secondary cooling system plays a critical role in managing intake charge air temperatures, making a solid reservoir vital for both spirited street driving and track day reliability.

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CSF Universal Large Single-Pass Oil Cooler - Universal Application ...

Universal fitment design - modifications may be necessary to run this cooler

T#:53608839

Part#: 8371

Ships in 3 Business Days

$ 499.00 USD

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$ 499.00 USD

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CSF redesigned this cooler and went with a more traditional inlet/outlet orientation. The new single pass design features high efficiency and high durability, but with vertically oriented inlet and outlet connections.

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Rein Coolant Expansion Tank - F97 F98 G01 G02 G05 G06 G07 - S58 B46 B...

T#:55965843

Part#: 171386106612

Ships in 3 Business Days

$ 49.99 USD

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$ 49.99 USD

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Keep your ultimate driving machine cool under pressure with this replacement auxiliary expansion tank from Rein. On modern turbocharged BMWs, the secondary cooling system plays a critical role in managing intake charge air temperatures, making a solid reservoir vital for both spirited street driving and track day reliability.

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Vargas Billet Coolant Block-Off - BMW B58 Engine

T#:52094566

Part#: VTTFAB040BLKB58

Ships in 10 Business Days

$ 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 Billet HMM Delete Kit - BMW B58TU

Fits all B58 TU / Gen 2 B58 engines

T#:51672725

Part#: VTT-B58-COOLING-

Ships in 10 Business Days

$ 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

T#:51778122

Part#: VTT-B58-OIL-COOL

Ships in 10 Business Days

$ 157.99 USD

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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.

Genuine BMW Fan Cowl with Acoustic Ring - G05/G06/G07/G09/F95/F96 ...

T#:49508945

Part#: 17425A57751

Ships in 4 Business Days

4% off MSRP $ 254.00

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

$ 242.99 USD

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4% off MSRP

$ 254.00

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

$ 242.99 USD

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Maintain factory-engineered cooling performance with this Genuine BMW fan cowl featuring an integrated acoustic ring. More than just a plastic shroud, this precision-molded assembly surrounds the cooling fan to properly channel airflow through the radiator while minimizing under-hood noise. Manufactured to BMW’s exact factory specifications, this fan cowl allows the radiator and auxiliary fan to draw air efficiently through the core support. The built-in acoustic ring helps reduce fan noise, turbulence, and unwanted drone under heavy cooling demands—especially beneficial on larger BMW platforms where airflow control is critical. Designed as a direct replacement for the original shroud, it installs without modification and restores the correct airflow path around the radiator and cooling fan. Whether you’re addressing damage from front-end service, replacing a cracked or warped cowl, or refreshing your cooling system, this OEM fan cowl delivers factory-correct fit, function, and long-term reliability.

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VEMO Electronic Thermostat And Coolant Distribution Module - BMW B58T...

For vehicles with the early B58C or B58D TU engine - Will not fit the B58N TU2 engine

T#:52903296

Part#: V20-99-0005

Ships on Oct 15, 2026

$ 336.99 USD

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$ 336.99 USD

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An electronic thermostat that is controlled by the car's computer for optimal control over the engine and coolant temperature. Internal valves are opened and closed by the vehicle's DME/ECU to achieve specific temperature targets for optimal engine efficiency and performance.

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Coolant Expansion Tank Cap

T#:56001934

Part#: 46221

Special Order: No Guaranteed ETA

$ 19.99 USD

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$ 19.99 USD

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This Febi Bilstein coolant expansion tank cap is designed to maintain the exact 1.4 bar pressure required to maximize your coolant's boiling point.

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