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BMW G02 X4 M40i B58 3.0L Cooling Expansion Tank Parts

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Dress up your engine bay with new coolant expansion tank caps affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For model years up to 2023

Brand:
Precision Raceworks - Corporate Logo
ES#:
5388630
Mfg#:
622-0291-BLAK
Ships in 9 Business Days
$184.99 USD
Free Shipping
on orders $49 and up
ES#4618482 - 17135A6A030 - Expansion Tank - Replace your old brittle expansion tank - Fits B46 B58 S58 engines - Genuine BMW - BMW

Replace your old brittle expansion tank - Fits B46 B58 S58 engines affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
4618482
Mfg#:
17135A6A030
Ships in 2 Business Days
7% off MSRP

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

$189.99

This product was last offered at the strikethrough price on
06-05-2026

$176.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3474959 - 17138610661 - Expansion Tank - Smaller of the 2 expansion tanks - Genuine BMW - BMW

Smaller of the 2 expansion tanks affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
3474959
Mfg#:
17138610661
Ships in 2 Business Days
6% off MSRP

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

$170.99

This product was last offered at the strikethrough price on
06-05-2026

$159.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4941100 - 17132754264 - Engine Coolant Expansion Tank Cap - Replace the expansion tank cap for your MINI / BMW - Bremmen Parts - BMW MINI

Replace the expansion tank cap for your MINI / BMW affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4941100
Mfg#:
17132754264
In Stock
ON SALE! SAVE 20%
$6.99

This product was last offered at the strikethrough price on
05-02-2026

$5.59 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3441908 - 34336871185 - Expansion Tank - Genuine BMW - BMW

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
3441908
Mfg#:
34336871185
Ships in 2 Business Days
5% off MSRP

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

$110.99

This product was last offered at the strikethrough price on
06-05-2026

$104.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4882956 - 201-0394-SIL - Silver Auxiliary Coolant Reservoir Cap - Functional and stunningly stylish way to add a nice touch to any engine bay - Precision Raceworks - BMW

Functional and stunningly stylish way to add a nice touch to any engine bay affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Precision Raceworks - Corporate Logo
ES#:
4882956
Mfg#:
201-0394-SIL
Ships in 7 Business Days
$99.99

This product was last offered at the strikethrough price on
01-22-2026

$94.99 USD
Free Shipping
on orders $49 and up
ES#4882951 - 201-0394-BLU - Blue Auxiliary Coolant Reservoir Cap - Functional and stunningly stylish way to add a nice touch to any engine bay - Precision Raceworks - BMW

Functional and stunningly stylish way to add a nice touch to any engine bay affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Precision Raceworks - Corporate Logo
ES#:
4882951
Mfg#:
201-0394-BLU
Ships in 9 Business Days
$99.99

This product was last offered at the strikethrough price on
01-22-2026

$94.99 USD
Free Shipping
on orders $49 and up
ES#5425971 - 17135A6A030 - Coolant Expansion Tank - Replaces missing or cracked coolant expansion tank. - Meyle - BMW

Replaces missing or cracked coolant expansion tank. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Meyle - Corporate Logo
ES#:
5425971
Mfg#:
17135A6A030
Ships on Jun 8, 2026
$75.99 USD
Free Shipping
on orders $49 and up
ES#5470511 - 17135A6A030C - Rein Coolant Expansion Tank - With Cap - Replace your old brittle expansion tank - Rein - BMW

Replace your old brittle expansion tank affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Rein - Corporate Logo
ES#:
5470511
Mfg#:
17135A6A030C
Ships in 3 Business Days
$99.99 USD
ES#4882996 - 201-0393-BLK - Black Engine Coolant Reservoir Cap - Functional and stunningly stylish way to add a nice touch to any engine bay! - Precision Raceworks - BMW

Functional and stunningly stylish way to add a nice touch to any engine bay! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Precision Raceworks - Corporate Logo
ES#:
4882996
Mfg#:
201-0393-BLK
Ships in 9 Business Days
$115.99

This product was last offered at the strikethrough price on
01-22-2026

$109.99 USD
Free Shipping
on orders $49 and up
ES#4882954 - 201-0394-BLK - Black Auxiliary Coolant Reservoir Cap - Functional and stunningly stylish way to add a nice touch to any engine bay - Precision Raceworks - BMW

Functional and stunningly stylish way to add a nice touch to any engine bay affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Precision Raceworks - Corporate Logo
ES#:
4882954
Mfg#:
201-0394-BLK
Ships in 9 Business Days
$99.99

This product was last offered at the strikethrough price on
01-22-2026

$94.99 USD
Free Shipping
on orders $49 and up
ES#4861046 - 17135A6A030 - Expansion Tank - Vaico - Replace your old and brittle expansion tank. Fits B46 B58 S58 egines - Vaico - BMW

Replace your old and brittle expansion tank. Fits B46 B58 S58 egines affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
4861046
Mfg#:
17135A6A030
Special Order: No Guaranteed ETA
$151.99 USD
Free Shipping
on orders $49 and up

More About Cooling Expansion Tank Parts

A common source of overheating problems is a broken or leaking coolant expansion tank. Replace it with an OEM coolant expansion tank or quality aftermarket expansion tank to prevent future woes.

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