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BMW Cooling Expansion Tank Parts

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

Brand:
Turner Motorsport - Corporate Logo
ES#:
4723175
Mfg#:
053082LA01
In Stock
ON SALE! SAVE 16%
$73.99

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

$61.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap

ES#4304653 - 17117639022 - Expansion Tank Cap - Prevent pressure loss and overheating with a new expansion tank cap - Bavarian Autosport - BMW
ECS Tuning recommends this product.

Prevent pressure loss and overheating with a new expansion tank cap affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bavarian Autosport - Corporate Logo
ES#:
4304653
Mfg#:
17117639022
In Stock
ON SALE! SAVE 15%
$13.99

This product was last offered at the strikethrough price on
06-03-2026

$11.89 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

M50/M52/S52 Heavy Duty Aluminum Coolant Expansion Tank Kit

ES#4619758 - 008348la01bKT - M50/M52/S52 Heavy Duty Aluminum Coolant Expansion Tank Kit - As expansion tanks age, they are prone to cracking or even exploding. Replace your factory plastic coolant reservoir with a Turner Heavy Duty aluminum tank for durability and piece of mind! Direct replacement for expansion tank 17111723520. - Turner Motorsport - BMW
ECS Tuning recommends this product.

As expansion tanks age, they are prone to cracking or even exploding. Replace your factory plastic coolant reservoir with a Turner Heavy Duty aluminum tank for durability and piece of mind! Direct replacement for expansion tank 17111723520. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Turner Motorsport - Corporate Logo
ES#:
4619758
Mfg#:
008348LA01BKT
Ships on Aug 10, 2026
Auto Notify
ON SALE! SAVE 20%
$414.99

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

$331.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Exact-fit Water Pipe Connecting Line

ES#3230761 - 013178ecs - Exact-fit Water Pipe Connecting Line - Connects the expansion tank to the upper radiator hose. Engineered in-house with perfectly formed fitment for a stronger, cleaner install. - ECS - BMW

Connects the expansion tank to the upper radiator hose. Engineered in-house with perfectly formed fitment for a stronger, cleaner install. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3230761
Mfg#:
013178ECS
In Stock
ON SALE! SAVE 30%
$155.99

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

$109.19 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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
2706802
Mfg#:
17137640515
Ships Today
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
06-04-2026

$176.99 USD
Free Shipping
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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 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

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

Brand:
URO - Corporate Logo
ES#:
4809970
Mfg#:
17137642160
Ships in 1 Business Day
$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! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

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

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

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

Brand:
Genuine BMW - Corporate Logo
ES#:
37986
Mfg#:
17112229114
In Stock
5% 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
06-04-2026

$312.99 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

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

Brand:
Genuine BMW - Corporate Logo
ES#:
4713337
Mfg#:
17135A7BC90
In Stock
7% 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
06-04-2026

$185.99 USD
Free Shipping
on orders $49 and up

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

Brand:
Genuine BMW - Corporate Logo
ES#:
2698384
Mfg#:
17137642160
In Stock
7% 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
06-04-2026

$168.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#2970673 - 17138621092 - Coolant Expansion Tank - Replace your cracked or faded tank - Genuine BMW - BMW

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

Brand:
Genuine BMW - Corporate Logo
ES#:
2970673
Mfg#:
17138621092
In Stock
7% off MSRP

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

$236.99

This product was last offered at the strikethrough price on
06-04-2026

$220.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Replacement Kit - Level 2

ES#2795143 - 17117573781KT6 - 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#:
2795143
Mfg#:
17117573781KT6
Ships in 10 Business Days
Auto Notify
ON SALE! SAVE 25%
$164.99

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

$124.09 USD
Free Shipping
This product is lifetime replacement eligible Partial 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. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with production date from 09/1987

Brand:
Mahle-Behr - Corporate Logo
ES#:
3464804
Mfg#:
17111712641
In Stock
$54.99

This product was last offered at the strikethrough price on
04-29-2026

$50.99 USD
Free Shipping
on orders $49 and up
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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