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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Junction Heat Hose - 11538606278
Junction Heat Hose - 11538606278
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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$ 54.99

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05-03-2026

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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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OEM Rein Lower Coolant Hose - N63 4.4L
OEM Rein Lower Coolant Hose - N63 4.4L
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:554681
Part#: 17127575427
Ships in 3 Business Days
$ 51.99 USD
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$ 51.99 USD
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Replace your cracked or leaking radiator hose to prevent further leaks and potentially catastrophic failure.

Fits the following engines:
N63 4.4L

OEM Rein Vent Hose - N63 4.4L
OEM Rein Vent Hose - N63 4.4L
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:554680
Part#: 17127576363
Ships in 1 Business Day
$ 26.99 USD
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$ 26.99 USD
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Replace your cracked or leaking radiator hose to prevent further leaks and potentially catastrophic failure.

Fits the following engines:
N63 4.4L

Genuine MINI Engine Coolant Expansion Tank Cap - 17135A1BD89
Genuine MINI Engine Coolant Expansion Tank Cap - 17135A1BD89 ...
Genuine MINI - Corporate Logo
T#:28337931
Part#: 17135A1BD89
In Stock
26% off MSRP $ 34.99

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

$ 25.99 USD
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26% off MSRP
$ 34.99

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

$ 25.99 USD
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Coolant Return Line
Coolant Return Line
Rein - Corporate Logo
T#:53856300
Part#: 11538650087
In Stock at Vendor
New Item
$ 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.
OEM INA Electronic Thermostat And Coolant Distribution Module - BMW B58TU
OEM INA Electronic Thermostat And Coolant Distribution Module - BMW B...
We Price Match - Give Us A Call or Chat!
Ina - Corporate Logo
T#:36201645
Part#: 11538642559
In Stock
$ 367.99

This product was last offered at the strikethrough price on
07-23-2026

$ 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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Rein Aluminum Oil Filter Housing - BMW B58
Rein Aluminum Oil Filter Housing - BMW B58
Rein - Corporate Logo
T#:49404665
Part#: 11428583901
In Stock
New Item
$ 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.
Coolant Expansion Tank Cap
Coolant Expansion Tank Cap
Bremmen Parts - Corporate Logo
T#:36032339
Part#: 17117639020
In Stock
Sale - Save 20% $ 14.99

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

$ 11.99 USD
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Sale - Save 20%
$ 14.99

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

$ 11.99 USD
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Intercooler Expansion Tank
Intercooler Expansion Tank
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:584477
Part#: 17137647281
Ships in 3 Business Days
$ 71.99 USD
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$ 71.99 USD
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Rein Expansion Tank Cap
Rein Expansion Tank Cap
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:384807
Part#: 17117639021
In Stock
$ 16.99 USD
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$ 16.99 USD
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Cap for plastic expansion tank
Electronic Thermostat And Coolant Distribution Module
Electronic Thermostat And Coolant Distribution Module
Bremmen Parts - Corporate Logo
T#:50311455
Part#: 11538843406
In Stock
New Item
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 - F97 F98 G01 G02 G05 G06 G07 - S58 B46 B58
Rein Coolant Expansion Tank - F97 F98 G01 G02 G05 G06 G07 - S58 B46 B...
Rein - Corporate Logo
T#:55965843
Part#: 171386106612
Ships in 3 Business Days
New Item
$ 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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Turbocharger Coolant Return Line
Turbocharger Coolant Return Line
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:4826914
Part#: 11539896890
Ships in 3 Business Days
$ 54.99 USD
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$ 54.99 USD
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Rein Coolant Expansion Tank Kit - F97 F98 G01 G02 G05 G06 G07 - S58 B46 B58
Rein Coolant Expansion Tank Kit - F97 F98 G01 G02 G05 G06 G07 - S58 B...
Rein - Corporate Logo
T#:55965839
Part#: 17138610661
Ships in 3 Business Days
New Item
$ 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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Turbocharger Coolant Return Line
Turbocharger Coolant Return Line
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:4826913
Part#: 11538485578
Ships in 3 Business Days
$ 66.99 USD
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$ 66.99 USD
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Cylinder 1-4 Turbo Return Line. Keep your turbos healthy and lubricated. Rein quality replacement turbo return line.
Vent Hose
Vent Hose
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
05-03-2026

$ 22.02 USD
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