BMW Coolant Expansion Tanks for BMW G42 M240i xDrive B58 3.0L

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On certain models, namely E36, E46, and E90, the factory BMW expansion tank is prone to either breaking at connection points or blowing apart altogether. If you're starting to feel like your expansion tank is on borrowed time, it's probably time to replace with either a direct OE replacement, or strengthen your cooling setup with an aluminum expansion tank - we offer numerous performance upgrades for your expansion tank. Especially if you're someone who likes to track your BMW, we recommend upgrading your expansion tank to avoid ruining your track day.
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Genuine BMW Expansion Tank Cap - G2x G4x G6x G7x
Genuine BMW Expansion Tank Cap - G2x G4x G6x G7x
Genuine BMW - Corporate Logo
T#:628106
Part#: 17138665638
In Stock
11% 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.

$ 30.99 USD
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11% 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.

$ 30.99 USD
Free Shipping on orders $49 and up
Add to Wish List
A failing expansion tank cap can compromise your entire cooling system, leading to lost pressure, fluid boil-off, and dangerous temperature spikes under load. This Genuine BMW Coolant Reservoir Cap restores factory pressure thresholds to keep your coolant boiling point elevated during spirited driving and track sessions.
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Coolant Cap Bundle - Silver
Coolant Cap Bundle - Silver
For model years up to 2023
Precision Raceworks - Corporate Logo
T#:47679259
Part#: 622-0291-SIL
In Stock
$ 184.99 USD
Free Shipping on orders $49 and up
Add to Wish List
$ 184.99 USD
Free Shipping on orders $49 and up
Add to Wish List
The Precision Raceworks Billet Coolant Cap Set is a functional and stunningly stylish way to add a nice touch to any engine bay! These caps come in three color options, so there is always a color that will work for you! Black with Billet Silver, Black with Blue, and the Stealth series (all black). Many people don't realize it, but the OEM caps have a pressure release valve built into them. Oftentimes, aftermarket companies don't know this either or just don't care. But our team cares about proper function just as much as we care about the appearance of every product we design. For pressure relief, our caps incorporate the OEM internals, so you get all the functionality of the original caps, ensuring a safe and reliable system in place. These caps offer superior style and performance-grade components that guarantee a reliable fit every time. Durable billet aluminum construction provides long-lasting protection and dependability that will upgrade your engine bay for years to come. PLEASE NOTE: These do require assembly and swapping the pressure relief valves from your old caps to your new billet caps.
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Genuine BMW Coolant Expansion Tank - Low Temp Circuit - BMW G42 G20 G22/23/26 G29
Genuine BMW Coolant Expansion Tank - Low Temp Circuit - BMW G42 G20 G...
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
Add to Wish List
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
Add to Wish List
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 Coolant Expansion Tank - High Temp Circuit - BMW G42 G20 G22/23/26 G29
Genuine BMW Coolant Expansion Tank - High Temp Circuit - BMW G42 G20 ...
Genuine BMW - Corporate Logo
T#:613870
Part#: 17138610652
Ships in 2 Business Days
6% off MSRP $ 198.99

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

$ 187.99 USD
Free Shipping
Add to Wish List
6% off MSRP
$ 198.99

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

$ 187.99 USD
Free Shipping
Add to Wish List
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 high-temp circuit, which is responsible for cooling your engine block and cylinder head.
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Precision Raceworks Coolant Cap Bundle - Black - Most BMWs from 2016 to 2023
Precision Raceworks Coolant Cap Bundle - Black - Most BMWs from 2016 ...
For model years up to 2023
Precision Raceworks - Corporate Logo
T#:47679257
Part#: 622-0291-BLAK
Ships in 9 Business Days
$ 184.99 USD
Free Shipping on orders $49 and up
Add to Wish List
$ 184.99 USD
Free Shipping on orders $49 and up
Add to Wish List
The Precision Raceworks Billet Coolant Cap Set is a functional and stunningly stylish way to add a nice touch to any engine bay! These caps come in three color options, so there is always a color that will work for you! Black with Billet Silver, Black with Blue, and the Stealth series (all black). Many people don't realize it, but the OEM caps have a pressure release valve built into them. Oftentimes, aftermarket companies don't know this either or just don't care. But our team cares about proper function just as much as we care about the appearance of every product we design. For pressure relief, our caps incorporate the OEM internals, so you get all the functionality of the original caps, ensuring a safe and reliable system in place. These caps offer superior style and performance-grade components that guarantee a reliable fit every time. Durable billet aluminum construction provides long-lasting protection and dependability that will upgrade your engine bay for years to come. PLEASE NOTE: These do require assembly and swapping the pressure relief valves from your old caps to your new billet caps.
Show More Show Less

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