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BMW Cooling Expansion Tank Parts

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Coolant Expansion Tank - Low Temp Circuit

Replacement plastic coolant reservoir for the low temp circuit that cools your intercooler affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For LCI models only

Brand:
Genuine BMW - Corporate Logo
ES#:
4757672
Mfg#:
17135A270D3
Ships in 7 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
06-04-2026

$159.99 USD
Free Shipping
on orders $49 and up

Charge Air Cooler Expansion Tank

ES#4325545 - 17138617045 - Charge Air Cooler Expansion Tank - Replace your cracked or leaking tank - MTC - BMW

Replace your cracked or leaking tank affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
MTC - Corporate Logo
ES#:
4325545
Mfg#:
17138617045
Ships in 9 Business Days
$64.46 USD
Free Shipping
on orders $49 and up

Black Engine Coolant Reservoir Cap

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

Black Auxiliary Coolant Reservoir Cap

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

Expansion Tank Replacement Kit - Level 2

ES#2795125 - 17117573781KT5 - Expansion Tank Replacement Kit - Level 2 - Upgraded to include a new transmission thermostat and mounting plate - both commonly damaged during expansion tank replacement. - Assembled By ECS - BMW

Upgraded to include a new transmission thermostat and mounting plate - both commonly damaged during expansion tank replacement. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2795125
Mfg#:
17117573781KT5
Ships in 10 Business Days
Auto Notify
ON SALE! SAVE 19%
$281.99

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

$229.16 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Expansion Tank Replacement Kit - Level 2

ES#2792725 - 17117573781KT3 - Expansion Tank Replacement Kit - Level 2 - More advanced expansion tank replacement kit - Assembled By ECS - BMW

More advanced expansion tank replacement kit affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2792725
Mfg#:
17117573781KT3
Ships on Jun 22, 2026
ON SALE!
$306.99

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

$279.86 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#3032465 - 17137647713 - Coolant Expansion Tank - Replace your cracked or faded tank - Mahle-Behr - BMW

Replace your cracked or faded tank affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Mahle-Behr - Corporate Logo
ES#:
3032465
Mfg#:
17137647713
Ships on Jun 22, 2026
$81.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

Includes bleeder screw and level sensor affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4338778
Mfg#:
17107514964
Ships on Jun 25, 2026
Auto Notify
ON SALE! SAVE 16%
$63.99

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

$53.75 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

Includes level sensor affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
5340950
Mfg#:
17137642158
Ships on Jul 6, 2026
Auto Notify
ON SALE! SAVE 21%
$67.99

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

$53.85 USD
Free Shipping
on orders $49 and up

Expansion Tank

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
5432883
Mfg#:
17139884859
Ships on Jul 6, 2026
Auto Notify
ON SALE! SAVE 20%
$101.99

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

$81.59 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

BMW Coolant Flange

ES#4343477 - 17111707817 - BMW Coolant Flange - Connects the radiator to the expansion tank - Febi - BMW

Connects the radiator to the expansion tank affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
4343477
Mfg#:
17111707817
Special Order: No Guaranteed ETA
$47.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#2868201 - 17111741167 - Coolant Expansion Tank - Replace your cracked or faded expansion tank. - Febi - BMW

Replace your cracked or faded expansion tank. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
2868201
Mfg#:
17111741167
Special Order: No Guaranteed ETA
$90.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

BMW Coolant Expansion Tank

ES#4343542 - 17137575578 - BMW Coolant Expansion Tank - Coolant Expansion Tank maintains pressure, fluid levels, and prevents engine overheating. - Febi - BMW

Coolant Expansion Tank maintains pressure, fluid levels, and prevents engine overheating. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
4343542
Mfg#:
17137575578
Special Order: No Guaranteed ETA
$73.99 USD
This product is lifetime replacement eligible Lifetime Replacement

BMW Coolant Expansion Bottle

ES#4343545 - 17137619189 - BMW Coolant Expansion Bottle - Febi - BMW

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
4343545
Mfg#:
17137619189
Special Order: No Guaranteed ETA
$83.99 USD
This product is lifetime replacement eligible Lifetime Replacement

BMW coolant expansion tank

ES#4343540 - 17134714830 - BMW coolant expansion tank - Includes level sensor. Cap not included - Febi - BMW

Includes level sensor. Cap not included affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
4343540
Mfg#:
17134714830
Special Order: No Guaranteed ETA
$96.99 USD
This product is lifetime replacement eligible Lifetime Replacement

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.

Other BMW Cooling Expansion Tank Parts

Let us help you find the parts that fit your BMW

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