BMW Cooling System Parts & Accessories for BMW 3 Series G20 (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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Genuine BMW Coolant Expansion Tank - Low Temp Circuit - BMW G42 G20 G...
For models with the Gen2 engines only (B58D & B46D/X) - Not for use with the later Gen3...
Genuine BMW - Corporate Logo
T#:613871
Part#: 17138610653
Ships in 1-2 days
6% off MSRP $ 170.99

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

$ 160.99 USD
Free Shipping on orders $49 and up
6% off MSRP
$ 170.99

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

$ 160.99 USD
Free Shipping on orders $49 and up
If your coolant reservoir tank has cracked or if one of the mounting points has broken, this is the perfect replacement to ensure your coolant system remains leak-free. This reservoir specifically works with the low-temp circuit, which is responsible for cooling your manifold-integrated intercooler
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Genuine BMW - Corporate Logo
T#:624784
Part#: 11539494425
Ships in 1-2 days
13% off MSRP $ 14.99

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

$ 12.99 USD
Free Shipping on orders $49 and up
13% off MSRP
$ 14.99

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

$ 12.99 USD
Free Shipping on orders $49 and up
This preformed seal is an o-ring seal that seals the connection between the thermostat housing/heat management module and the engine block. This seal is the larger of two seals located on the side of the heat management module.
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Genuine BMW - Corporate Logo
T#:606607
Part#: 11538650086
In Stock
4% off MSRP $ 179.99

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

$ 171.99 USD
Free Shipping on orders $49 and up
4% off MSRP
$ 179.99

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

$ 171.99 USD
Free Shipping on orders $49 and up

Genuine BMW - Corporate Logo
T#:613991
Part#: 17428666819
Ships in 1-2 days
6% off MSRP $ 1,434.99

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

$ 1,346.99 USD
6% off MSRP
$ 1,434.99

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

$ 1,346.99 USD

Enhance Engine Cooling with Genuine BMW Fan Housing with Fan (Part Number: 17428666819)

Maintain your vehicle's cooling system efficiency with the Genuine BMW Fan Housing with Fan (Part Number: 17428666819). This authentic BMW replacement component adheres to the manufacturer's stringent quality standards, ensuring precision engineering and durability.

Designed to seamlessly fit BMW vehicles, this fan housing with a fan assembly guarantees optimal cooling performance, essential for enhancing your vehicle's longevity and overall performance. Rely on Genuine BMW parts for their perfect integration and dependable functionality.

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Genuine BMW Upper Radiator Coolant Hose - BMW G42 G20 G22/23/26 B48D/...
For models with a production date up to 07/2021 or a production date from 07/2021+ with...
Genuine BMW - Corporate Logo
T#:618222
Part#: 17128654834
Ships in 1-2 days
6% off MSRP $ 141.99

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

$ 132.99 USD
Free Shipping on orders $49 and up
6% off MSRP
$ 141.99

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

$ 132.99 USD
Free Shipping on orders $49 and up
Replace your old coolant hose with a brand new hose from Genuine BMW to eliminate coolant leaks and prevent overheating.
Cap
D=6
Genuine BMW - Corporate Logo
T#:191368
Part#: 17128515062
In Stock
4% off MSRP $ 9.24

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

$ 8.91 USD
Free Shipping on orders $49 and up
4% off MSRP
$ 9.24

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

$ 8.91 USD
Free Shipping on orders $49 and up


Genuine BMW Cap -
This item fits the following BMW Chassis:
F15,F25 X3

Fits BMW Engines including:
N57N


Genuine BMW - Corporate Logo
T#:618224
Part#: 17128654854
Ships in 1-2 days
6% off MSRP $ 141.99

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

$ 132.99 USD
Free Shipping on orders $49 and up
6% off MSRP
$ 141.99

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

$ 132.99 USD
Free Shipping on orders $49 and up
Genuine BMW Water Pump & Thermostat Kit - BMW B58C B58D (B58TU) ...
For vehicles with the B58D (Gen2) engine only - Will not fit the earlier B58A (Gen1) en...
For models without the 48V Mild Hybrid package
Genuine BMW - Corporate Logo
T#:29333997
Part#: 11518482251KT
Ships in 1-2 days
$ 724.99 USD
Free Shipping on orders $49 and up
$ 724.99 USD
Free Shipping on orders $49 and up
If your water pump or thermostat has failed, this kit includes all the basic components needed to replace and restore your cooling system! Included: Water Pump Thermostat Housing (aka Heat Management Module) Coolant Outlet Pipe (L-Pipe) Gaskets & Seals
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Genuine BMW - Corporate Logo
T#:622579
Part#: 11539425963
Ships in 1-2 days
$ 4.99 USD
Free Shipping on orders $49 and up
Seals the connection between the Heat Management Module and the water pump housing

Genuine BMW - Corporate Logo
T#:526204
Part#: 11538658572
In Stock
$ 8.99 USD
Free Shipping on orders $49 and up
O ring that seals the thermostat to the coolant pump. New seals are a must when doing any repairs.
Genuine BMW - Corporate Logo
T#:545300
Part#: 11538630023
Ships in 1-2 days
6% off MSRP $ 329.99

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

$ 309.99 USD
Free Shipping
6% off MSRP
$ 329.99

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

$ 309.99 USD
Free Shipping
Coolant pipe that runs from the thermostat next to the engine block. Make sure your cooling system is working properly and leak free. When your in the tight spaces doing a service it makes sense to change all associated parts.
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Genuine BMW - Corporate Logo
T#:613575
Part#: 64116834917
In Stock
10% off MSRP $ 278.99

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

$ 251.99 USD
Limited Qty Sale
Free Shipping
10% off MSRP
$ 278.99

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

$ 251.99 USD
Limited Qty Sale
Free Shipping
eplace your faulty or failing electric water pump with this Genuine BMW pump for guaranteed reliability. This water pump feeds coolant to the turbo, keeping temperatures optimal for performance and smooth operation.
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Genuine BMW - Corporate Logo
T#:624783
Part#: 11539494424
Ships in 1-2 days
13% off MSRP $ 14.99

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

$ 12.99 USD
Free Shipping on orders $49 and up
13% off MSRP
$ 14.99

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

$ 12.99 USD
Free Shipping on orders $49 and up
This preformed seal is an o-ring seal that seals the connection between the thermostat housing/heat management module and the engine block. This seal is the larger of two seals located on the side of the heat management module.
Show More Show Less
Genuine BMW Upper Radiator Cooant Hose - BMW G42 G20 G22/23/26 B48D/B...
For vehicles with a production date of 07/2021+ with Control DSC package (S8WEA)
Genuine BMW - Corporate Logo
T#:49857443
Part#: 17125A44477
Ships in 6 Business Days
6% off MSRP $ 141.99

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

$ 132.99 USD
Free Shipping on orders $49 and up
6% off MSRP
$ 141.99

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

$ 132.99 USD
Free Shipping on orders $49 and up
Replace your old coolant hose with a brand new hose from Genuine BMW to eliminate coolant leaks and prevent overheating.
Victor Reinz - Corporate Logo
T#:580584
Part#: C32348
Ships in 7 Business Days
$ 3.99

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

$ 2.99 USD
Free Shipping on orders $49 and up
$ 2.99 USD
Free Shipping on orders $49 and up

Genuine BMW Coolant Expansion Tank - Low Temp Circuit - BMW G20 G22/2...
For models with the later Gen3 engines only (B58N & B48P) - Not for use with the early ...
Genuine BMW - Corporate Logo
T#:49857448
Part#: 17135A270D3
Ships in 5 Business Days
6% off MSRP $ 170.99

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

$ 160.99 USD
Free Shipping on orders $49 and up
6% off MSRP
$ 170.99

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

$ 160.99 USD
Free Shipping on orders $49 and up
If your coolant reservoir tank has cracked or if one of the mounting points has broken, this is the perfect replacement to ensure your coolant system remains leak-free. This reservoir specifically works with the low-temp circuit, which is responsible for cooling your manifold-integrated intercooler
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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
Vemo - Corporate Logo
T#:52903296
Part#: V20-99-0005
Ships in 9 Business Days
New Item
$ 336.99

This product was last offered at the strikethrough price on
08-05-2026

$ 291.99 USD
$ 291.99 USD
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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Vemo - Corporate Logo
T#:49578587
Part#: V20-99-1310
Special Order: No Guaranteed ETA
$ 182.99 USD
Free Shipping on orders $49 and up
Modern BMW thermostats are electronically controlled, allowing the DME/ECU to directly regulate coolant flow throughout the engine and its components. This system enables the thermostat to operate based on a broader range of temperature inputs, such as coolant, cylinder head, engine block, and oil temperatures, for more refined control of engine warm-up and temperature across diverse conditions. Unlike traditional thermostats, which simply open or close to permit coolant flow, this system uses a rotary valve for more dynamic control. The rotary valve adjusts to various positions, allowing for partial or full coolant flow to designated passageways as needed. This precision control helps your BMW's engine reach optimal temperatures quickly and ensures efficient heat management under various driving conditions.
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