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BMW Cooling Expansion Tank Parts

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Expansion Tank Replacement Kit

ES#2684746 - 17111723520KT1 - Expansion Tank Replacement Kit - ncludes everything you need to bolt on a brand new expansion tank - Genuine BMW - BMW

ncludes everything you need to bolt on a brand new expansion tank For vehicles with production date up to 08/1998

Brand:
Genuine BMW - Corporate Logo
ES#:
2684746
Mfg#:
17111723520KT1
Ships in 4 Business Days
$434.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Coolant Expansion Tank

ES#4308626 - 17138093924 - Coolant Expansion Tank - Main coolant tank - Genuine BMW - BMW

Main coolant tank

Brand:
Genuine BMW - Corporate Logo
ES#:
4308626
Mfg#:
17138093924
Ships in 4 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.

$248.99

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

$233.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Replacement Kit

ES#2684756 - 17111436381KT - Expansion Tank Replacement Kit - Includes everything you need to bolt on a brand new expansion tank - Genuine BMW - BMW

Includes everything you need to bolt on a brand new expansion tank

Brand:
Genuine BMW - Corporate Logo
ES#:
2684756
Mfg#:
17111436381KT
Ships in 4 Business Days
$378.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#4012749 - 17138687503 - Coolant Expansion Tank - Replace your cracked or faded tank - Genuine MINI - BMW MINI

Replace your cracked or faded tank

Brand:
Genuine MINI - Corporate Logo
ES#:
4012749
Mfg#:
17138687503
Ships in 3 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.

$151.99

This product was last offered at the strikethrough price on
03-05-2026

$140.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

Coolant tank for the water to air intercooler system

Brand:
Genuine BMW - Corporate Logo
ES#:
4308627
Mfg#:
17138093925
Ships in 4 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.

$212.99

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

$200.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Genuine BMW Expansion Tank - Priced Each

Direct replacement from BMW!

Brand:
Genuine BMW - Corporate Logo
ES#:
2798058
Mfg#:
17137604431
Ships in 6 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.

$162.99

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

$152.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank - Low Temp Circuit

Replacement plastic coolant reservoir for the low temp circuit that cools your intercooler For LCI models only

Brand:
Genuine BMW - Corporate Logo
ES#:
4757672
Mfg#:
17135A270D3
Ships in 6 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
07-20-2026

$160.99 USD
Free Shipping
on orders $49 and up

Expansion Tank

Brand:
Genuine BMW - Corporate Logo
ES#:
4181501
Mfg#:
17137997170
Ships in 6 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.

$220.99

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

$207.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Return line

ES#37919 - 17111737708 - Coolant Return line - From expansion tank to radiator - Genuine BMW - BMW

From expansion tank to radiator

Brand:
Genuine BMW - Corporate Logo
ES#:
37919
Mfg#:
17111737708
Ships in 10 Business Days
3% off MSRP

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

$79.99

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

$77.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Intercooler Expansion Tank

ES#2920107 - 17137591214 - Intercooler Expansion Tank - Coolant reservoir for intercooler circuit - Genuine BMW - BMW

Coolant reservoir for intercooler circuit

Brand:
Genuine BMW - Corporate Logo
ES#:
2920107
Mfg#:
17137591214
Ships in 9 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.

$162.99

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

$152.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

E36 Expansion Tank

ES#37025 - 16131182855 - E36 Expansion Tank - Genuine BMW - BMW

Running Loss

Brand:
Genuine BMW - Corporate Logo
ES#:
37025
Mfg#:
16131182855
Ships in 9 Business Days
3% off MSRP

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

$109.99

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

$106.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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

Brand:
MTC - Corporate Logo
ES#:
4325545
Mfg#:
17138617045
Ships in 10 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!

Brand:
Precision Raceworks - Corporate Logo
ES#:
4882996
Mfg#:
201-0393-BLK
Ships in 10 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

Brand:
Precision Raceworks - Corporate Logo
ES#:
4882954
Mfg#:
201-0394-BLK
Ships in 10 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 Hose

ES#5480651 - 17128570061 - Expansion Tank Hose - Nothing ruins a weekend drive faster than a brittle, leaking cooling hose. If your factory hose has seen better days, this precision-molded coolant recovery tank hose is the perfect weekend DIY fix to restore your cooling system's integrity. - URO - BMW

Nothing ruins a weekend drive faster than a brittle, leaking cooling hose. If your factory hose has seen better days, this precision-molded coolant recovery tank hose is the perfect weekend DIY fix to restore your cooling system's integrity. 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
URO - Corporate Logo
ES#:
5480651
Mfg#:
17128570061
Ships in 9 Business Days
Auto Notify
$26.99 USD

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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