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BMW Cooling Expansion Tank Parts

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Coolant Expansion Tank

ES#4304685 - 17111723520 - Coolant Expansion Tank - Replace your cracked or faded tank - Bavarian Autosport - BMW

Replace your cracked or faded tank 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bavarian Autosport - Corporate Logo
ES#:
4304685
Mfg#:
17111723520
In Stock
ON SALE! SAVE 20%
$39.99

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

$31.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank Cap

ES#4818570 - 17117639020 - Coolant Expansion Tank Cap - Keep that coolant expansion tank sealed - Bremmen Parts - BMW

Keep that coolant expansion tank sealed 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4818570
Mfg#:
17117639020
In Stock
ON SALE! SAVE 20%
$14.99

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

$11.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Engine Coolant Expansion Tank

ES#4818589 - 17138677649 - Engine Coolant Expansion Tank - Replace your cracked or leaking tank - Does not include cap or coolant level sensor - Bremmen Parts - BMW

Replace your cracked or leaking tank - Does not include cap or coolant level sensor 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4818589
Mfg#:
17138677649
In Stock
ON SALE! SAVE 12%
$85.99

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

$75.59 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#2706802 - 17137640515 - Coolant Expansion Tank - Includes level sensor - Genuine BMW - BMW

Includes level sensor

Brand:
Genuine BMW - Corporate Logo
ES#:
2706802
Mfg#:
17137640515
In Stock
6% 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
07-20-2026

$178.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Silicone Expansion Tank Relocation Coolant Hose

ES#4723175 - 053082LA01 - Silicone Expansion Tank Relocation Coolant Hose - 60" silicone performance coolant hose featuring a molded 90 degree bend for neat installs. Used as a replacement coolant hose for the Turner N54 coolant expansion tank relocation. - Turner Motorsport - BMW

60" silicone performance coolant hose featuring a molded 90 degree bend for neat installs. Used as a replacement coolant hose for the Turner N54 coolant expansion tank relocation. 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Turner Motorsport - Corporate Logo
ES#:
4723175
Mfg#:
053082LA01
In Stock
ON SALE! SAVE 25%
$75.99

This product was last offered at the strikethrough price on
06-13-2026

$56.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank

ES#2698384 - 17137642160 - Expansion Tank - Genuine replacement for your cracked and/or damaged coolant expansion tank. - Genuine BMW - BMW

Genuine replacement for your cracked and/or damaged coolant expansion tank.

Brand:
Genuine BMW - Corporate Logo
ES#:
2698384
Mfg#:
17137642160
In Stock
6% off MSRP

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

$180.99

This product was last offered at the strikethrough price on
07-20-2026

$169.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

E39 M5 Coolant Expansion Tank

ES#37986 - 17112229114 - E39 M5 Coolant Expansion Tank - Replace your cracked or faded expansion tank with this genuine part - Genuine BMW - BMW

Replace your cracked or faded expansion tank with this genuine part

Brand:
Genuine BMW - Corporate Logo
ES#:
37986
Mfg#:
17112229114
Ships in 1 Business Day
4% off MSRP

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

$329.99

This product was last offered at the strikethrough price on
07-20-2026

$315.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#2731801 - 17137542986 - Coolant Expansion Tank - Includes fluid level sensor - Mahle-Behr - BMW
ECS Tuning recommends this product.

Includes fluid level sensor

Brand:
Mahle-Behr - Corporate Logo
ES#:
2731801
Mfg#:
17137542986
In Stock at Vendor
$137.93 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#4713337 - 17135A7BC90 - Coolant Expansion Tank - Genuine BMW - BMW

Brand:
Genuine BMW - Corporate Logo
ES#:
4713337
Mfg#:
17135A7BC90
In Stock
6% off MSRP

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

$198.99

This product was last offered at the strikethrough price on
07-20-2026

$187.99 USD
Free Shipping
on orders $49 and up

Expansion Tank

ES#4809970 - 17137642160 - Expansion Tank - Quality replacement for your cracked and/or damaged coolant expansion tank. - URO - BMW

Quality replacement for your cracked and/or damaged coolant expansion tank. 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
4809970
Mfg#:
17137642160
Back Ordered
$80.81 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Billet Coolant Reservoir Cap - Anodized Blue

ES#4505866 - CO0LANTCAPBLUE - Billet Coolant Reservoir Cap - Anodized Blue - Upgrade the visual appeal of your engine bay with Vargas Turbo Technologies' Billet Caps! - Vargas Turbo Technologies - BMW

Upgrade the visual appeal of your engine bay with Vargas Turbo Technologies' Billet Caps! 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Vargas Turbo Technologies - Corporate Logo
ES#:
4505866
Mfg#:
CO0LANTCAPBLUE
In Stock
$79.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#5341169 - 17137642160 - Coolant Expansion Tank - replacement for your cracked and/or damaged coolant expansion tank. - Rein - BMW

replacement for your cracked and/or damaged coolant expansion tank. 2X Entries For Our 25th Anniversary Sweepstakes!
2X Entries For Our G87 M2 Sweepstakes!

Brand:
Rein - Corporate Logo
ES#:
5341169
Mfg#:
17137642160
Back Ordered
Auto Notify
$85.00

This product was last offered at the strikethrough price on
04-27-2026

$79.99 USD
Free Shipping
on orders $49 and up

Coolant Expansion Tank

ES#4338775 - 17138570079 - Coolant Expansion Tank - Includes level sensor - Bavarian Autosport - BMW

Includes level sensor 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bavarian Autosport - Corporate Logo
ES#:
4338775
Mfg#:
17138570079
In Stock
ON SALE! SAVE 20%
$78.99

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

$63.19 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

E30 Coolant Expansion Tank

ES#3464804 - 17111712641 - E30 Coolant Expansion Tank - Replace your cracked or faded expansion tank. - Mahle-Behr - BMW

Replace your cracked or faded expansion tank. For vehicles with production date from 09/1987

Brand:
Mahle-Behr - Corporate Logo
ES#:
3464804
Mfg#:
17111712641
In Stock at Vendor
$56.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Replacement Kit

ES#2581926 - N524ECSTNKKT - Expansion Tank Replacement Kit - Includes everything you need to bolt on a brand new expansion tank - Assembled By ECS - BMW

Includes everything you need to bolt on a brand new expansion tank 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2581926
Mfg#:
N524ECSTNKKT
In Stock
ON SALE! SAVE 40%
$166.99

This product was last offered at the strikethrough price on
04-03-2026

$100.95 USD
Free Shipping
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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