BMW Coolant Expansion Tanks for BMW E30 M3 S14 2.3L

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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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Moroso - Corporate Logo
T#:29666103
Part#: 63799
In Stock
$ 459.99 USD
$ 459.99 USD

The coolant expansion tank provides hot coolant with a place to travel, preventing pressure buildup within your cooling system. On many BMWs, this component is constructed from plastic. While cheap to replace and manufacture, a failed cooling tank can cause costly engine damage.

With this issue in mind, Moroso designed a high-quality replacement. Featuring TIG welded, 100% aluminum construction, this tank is sure to outperform it's factory counterpart.

Features:

Bolt-in replacement for stock cracked or discolored tanks Fabricated aluminum Features billet aluminum filler neck and integrated sight glass to monitor coolant level Can be polished, painted, powder coated or left as-is Moroso radiator cap (63320) included

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Genuine BMW - Corporate Logo
T#:368499
Part#: 61311378320
Ships in 1-2 days
Sale - Save 5% $ 66.99
$ 63.62 USD
Free Shipping on orders $49 and up
Sale - Save 5% $ 66.99
$ 63.62 USD
Free Shipping on orders $49 and up
Genuine BMW - Corporate Logo
T#:22513
Part#: 17112227683
Ships Jul 1, 2025
4% off MSRP $ 26.99
$ 25.99 USD
Free Shipping on orders $49 and up
4% off MSRP $ 26.99
$ 25.99 USD
Free Shipping on orders $49 and up


Genuine BMW Radiator Cap - 1,4Bar
This item fits the following BMW Chassis:
E30 M3,E30

Fits BMW Engines including:
S14,S38


Genuine BMW - Corporate Logo
T#:45011
Part#: 16131178014
Ships Jul 1, 2025
Sale - Save 3% $ 340.99
$ 329.94 USD
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Sale - Save 3% $ 340.99
$ 329.94 USD
Free Shipping


Genuine BMW Expansion Tank

This item fits the following BMW Chassis:
E30 M3,E30

Fits BMW Engines including:
M10,M20,M42,S14


Genuine BMW - Corporate Logo
T#:12562
Part#: 17112225543
Ships Jul 1, 2025
6% off MSRP $ 195.99
$ 184.99 USD
Free Shipping
6% off MSRP $ 195.99
$ 184.99 USD
Free Shipping
This Genuine BMW cooling system expansion tank / coolant reservoir is a direct replacement for the factory unit. Replace your cracked or leaking radiator expansion tank today and save your valuable S14 engine for damage.

When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

This item fits the following BMWs:
1988-1991 E30 BMW M3
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Coolant Level Sensor - E30 87-91, E32 E34
2X Entries For Our Spin To Win Sweepstakes! We Price Match - Give Us A Call or Chat!
Febi - Corporate Logo
T#:1728
Part#: 61311378320
In Stock
$ 16.67 USD
Free Shipping on orders $49 and up

Coolant level sensor for most E30, E32, and E34 cars. Fits E30 M3 and all E30 325's; E32 735, 740, and 750; and E34 530, 535, 540, and M5. 

Since the late 1800’s Febi has been fabricating replacement metal parts. This history is self evident in the quality and vast amount of applications they service. With more than 34,000 repair solutions for cars and commercial vehicles you can be sure Febi has you covered.

This item fits the following BMWs:
1987-1991 E30 BMW 318i 318is 318ic 325e 325es 325i 325is 325ic 325xi M3
1989-1995 E34 BMW 530i 535i 540i M5
1987-1989 E24 BMW 635csi M6
1988-1994 E32 BMW 735i 735il 740i 740il 750il

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Bremmen Parts - Corporate Logo
T#:30728984
Part#: 61311378320
In Stock
Sale - Save 25% $ 15.99
$ 11.99 USD
Free Shipping on orders $49 and up
Sale - Save 25% $ 15.99
$ 11.99 USD
Free Shipping on orders $49 and up

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