BMW Cooling System Parts & Accessories for BMW 5 Series G30 (2017+)

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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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Turner Motorsport - Corporate Logo
T#:338927
Part#: HOSE-CLAMPS
In Stock
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This product was last offered at the strikethrough price on
06-13-2026

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$ 3.99

This product was last offered at the strikethrough price on
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Hose clamps for radiator hoses, coolant hoses, vacuum hoses, or intake hoses. These hose clamps are the same style as your OEM hoses with a smooth inside band to prevent cutting into the hose material.
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Bremmen Parts - Corporate Logo
T#:26538308
Part#: 11537642854
In Stock
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This product was last offered at the strikethrough price on
05-03-2026

$ 292.63 USD
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$ 308.99

This product was last offered at the strikethrough price on
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$ 292.63 USD
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Thermostat - B48
For vehicles with the Gen1 B48/B46 only - not compatible with the later Gen2 B48 (TU) engines
Bremmen Parts - Corporate Logo
T#:23648673
Part#: 11537644811
In Stock
Sale - Save 15% $ 223.99

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

$ 190.39 USD
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Sale - Save 15%
$ 223.99

This product was last offered at the strikethrough price on
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$ 190.39 USD
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Bremmen Parts - Corporate Logo
T#:27205374
Part#: 11118511205
In Stock
Sale - Save 20% $ 42.99

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

$ 34.39 USD
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$ 42.99

This product was last offered at the strikethrough price on
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$ 34.39 USD
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Bremmen Parts - Corporate Logo
T#:36981057
Part#: 11538611277
Ships on Aug 11, 2026
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This product was last offered at the strikethrough price on
05-03-2026

$ 49.99 USD
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This Bremmen Parts Coolant Hose is designed to connect the turbocharger to the auxiliary water pump, providing a premium replacement for B58-equipped BMW models. Constructed with high-quality, heat-resistant materials, this hose ensures reliable and efficient engine cooling, even under extreme temperatures. Engineered to meet OEM specifications, it offers a precise fit and a secure connection, optimizing coolant flow to maintain the performance and longevity of your BMW’s turbocharged engine.

Key Benefits:

Premium Materials: Crafted from heat-resistant materials to endure high-temperature conditions. OEM-Compatible Fit: Matches BMW’s original specifications for an easy, hassle-free installation. Enhanced Cooling: Designed to support efficient coolant flow in turbocharged engines. Durable Construction: Built to last, minimizing the need for frequent replacements and ensuring long-term reliability.

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Bremmen Parts - Corporate Logo
T#:36913371
Part#: 11118619408
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This product was last offered at the strikethrough price on
05-03-2026

$ 26.10 USD
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The Coolant Outlet Connector connects the engine block coolant outlet to the upper radiator hose.

Due to fragile plastic construction and consistent exposure to hot, chemical-rich engine coolant, this piece is prone to degradation and (potentially) complete failure.

Whether you're fixing a failed connector or preemptively replacing this failure-prone component, choose this quality replacement from Bremmen Parts for a lasting repair.

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Bremmen Parts - Corporate Logo
T#:36913362
Part#: 11538606278
In Stock
Sale - Save 21% $ 54.99

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

$ 43.24 USD
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This junction heat hose, made from rubber, is prone to cracking, dry rot, and brittleness over time, often leading to coolant leaks at the front of the engine. Such leaks pose a significant risk to your engine’s health, as rapid coolant loss can cause overheating and severe damage.

Replace your worn or leaking heat hose with this high-quality OE replacement from Bremmen Parts. Engineered for a precise fit and long-lasting performance, this hose ensures a reliable repair and helps protect your engine from potential overheating.

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VTT Billet/Silicone Cylinder Head Cooling Hose - B58TU
For vehicles with a production date from 07/18
Vargas Turbo Technologies - Corporate Logo
T#:29334026
Part#: VTT-B58TU-UCH
Ships in 10 Business Days
Starting at $ 209.99 USD
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Starting at $ 209.99 USD
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Positioned directly in the charge pipe's path, the stock B58TU upper cylinder head cooling hose, primarily made of plastic, is prone to damage. A dislodged charge pipe can easily take out this cooling hose, leading to severe engine damage through rapid coolant loss and overheating.

To address this vulnerability, VTT has engineered a robust solution. By replacing the OEM rubber hose with a durable 7-ply silicone variant, they offer superior resilience and longevity. Furthermore, they've upgraded the factory plastic flanges to 6061-T6 billet aluminum with black anodizing, enhancing corrosion resistance.

This upgraded hose is the ultimate solution, providing protection against dislodged charge pipes and the heat generated from spirited driving or track use.

Key Features:

Direct factory replacement for easy installation 6061-T6 billet aluminum with black anodizing for improved corrosion resistance Durable 7-ply silicone available in three colors Upgrade your BMW B58TU engine with this enhanced cooling hose from Vargas Turbo Technologies for superior performance and reliability.

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Ina - Corporate Logo
T#:36201645
Part#: 11538642559
In Stock
$ 367.99

This product was last offered at the strikethrough price on
07-21-2026

$ 356.99 USD
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$ 356.99 USD
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Engineered specifically for BMW models, the electronic thermostat and coolant distribution module plays a vital role in the engine’s cooling system, adapting to changing temperatures for superior performance under all driving conditions. Whether on the track or the highway, this module ensures your BMW runs cooler, longer, and more efficiently.
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Bremmen Parts - Corporate Logo
T#:36032339
Part#: 17117639020
In Stock
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05-03-2026

$ 11.99 USD
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$ 11.99 USD
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Meyle - Water Pump with Gasket
For model years 2017-2019
Meyle - Corporate Logo
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.
Electronic Thermostat And Coolant Distribution Module
For vehicles with the later B58C or B58D engine - Will not fit the B58A early engine
Bremmen Parts - Corporate Logo
T#:50311455
Part#: 11538843406
In Stock
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05-03-2026

$ 358.01 USD
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Water/Coolant Pump With Support
For models with the B48D, B46D, or B46X engines only and without the Energy Recovery Sy...
Bremmen Parts - Corporate Logo
T#:49648357
Part#: 11518650988
In Stock
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This product was last offered at the strikethrough price on
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$ 195.99 USD
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Expansion Tank
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Meyle - Corporate Logo
T#:36201637
Part#: 17139846642
Special Order: No Guaranteed ETA
$ 96.99 USD
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The Expansion Tank plays a crucial role in your vehicle’s cooling system, managing coolant expansion and contraction caused by temperature changes. It provides additional space for the coolant, preventing overheating and maintaining the cooling system's efficiency. **Key Benefits:** - **Prevents Overheating:** Regulates coolant expansion and pressure to maintain stable engine temperatures. - **Durable Construction:** Built with heat-resistant materials to endure extreme engine conditions. - **OEM Compatibility:** Precisely designed to meet or exceed original equipment standards for an easy, seamless replacement. - **Leak-Proof Design:** Features a secure seal to prevent leaks and ensure optimal system performance. - **Enhanced Engine Longevity:** Promotes proper coolant circulation, reducing engine wear and tear. The Expansion Tank is an essential component for sustaining your vehicle's cooling system and ensuring reliable engine performance over time.
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Bremmen Parts - Corporate Logo
T#:39295552
Part#: 17127576363
Special Order: No Guaranteed ETA
Sale - Save 21% $ 27.99

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

$ 22.02 USD
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Sale - Save 21%
$ 27.99

This product was last offered at the strikethrough price on
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$ 22.02 USD
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