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BMW Cooling Expansion Tank Parts

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Engine Coolant Expansion Tank Cap

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 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4941100
Mfg#:
17132754264
Ships on Sep 28, 2026
Auto Notify
ON SALE! SAVE 14%
$6.99

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

$5.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank - Low Temp Circuit

ES#4181510 - 17138610653 - Coolant Expansion Tank - Low Temp Circuit - Replacement plastic coolant reservoir for the low temp circuit that cools your intercooler - Genuine BMW - BMW

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

Brand:
Genuine BMW - Corporate Logo
ES#:
4181510
Mfg#:
17138610653
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.

$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
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank

ES#3474959 - 17138610661 - Expansion Tank - Smaller of the 2 expansion tanks - Genuine BMW - BMW

Smaller of the 2 expansion tanks

Brand:
Genuine BMW - Corporate Logo
ES#:
3474959
Mfg#:
17138610661
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.

$170.99

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

$160.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank

ES#2977221 - 17138610658 - Expansion Tank - Genuine BMW - BMW

Brand:
Genuine BMW - Corporate Logo
ES#:
2977221
Mfg#:
17138610658
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.

$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
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank

ES#38482 - 17137501959 - Expansion Tank - Includes vent screw and leveling switch - Genuine BMW - BMW

Includes vent screw and leveling switch

Brand:
Genuine BMW - Corporate Logo
ES#:
38482
Mfg#:
17137501959
Ships in 10 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.

$169.99

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

$159.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap

ES#2874167 - 17111742232 - Expansion Tank Cap - 1.4 Bar pressure - Febi - BMW

1.4 Bar pressure 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
For vehicles with production date from 09/1987

Brand:
Febi - Corporate Logo
ES#:
2874167
Mfg#:
17111742232
In Stock
$24.99

This product was last offered at the strikethrough price on
06-18-2026

$15.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Mounting Plate

ES#37491 - 17101439110 - Expansion Tank Mounting Plate - Mounts to the side of the radiator for retaining the expansion tank - Genuine BMW - BMW

Mounts to the side of the radiator for retaining the expansion tank

Brand:
Genuine BMW - Corporate Logo
ES#:
37491
Mfg#:
17101439110
Back Ordered
6% off MSRP

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

$165.99

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

$155.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank Hose

ES#5341132 - 17127535528 - Coolant Expansion Tank Hose - Connects the coolant expansion tank to the cylinder head - Rein - BMW

Connects the coolant expansion tank to the cylinder head 2X Entries For Our 25th Anniversary Sweepstakes!
For Pre-LCI models with the earlier Gen1 B46 engine only

Brand:
Rein - Corporate Logo
ES#:
5341132
Mfg#:
17127535528
Ships in 2 Business Days
$93.99

This product was last offered at the strikethrough price on
05-14-2026

$51.99 USD
Free Shipping
on orders $49 and up

Expansion Tank Hose

ES#37897 - 17111723521 - Expansion Tank Hose - Connects the expansion tank to the radiator - Genuine BMW - BMW

Connects the expansion tank to the radiator

Brand:
Genuine BMW - Corporate Logo
ES#:
37897
Mfg#:
17111723521
Ships in 3 Business Days
4% off MSRP

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

$26.99

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

$25.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#37766 - 17111707540 - Coolant Expansion Tank - Replace your cracked or faded expansion tank. - Genuine BMW - BMW

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

Brand:
Genuine BMW - Corporate Logo
ES#:
37766
Mfg#:
17111707540
Ships in 3 Business Days
ON SALE!
$158.99

This product was last offered at the strikethrough price on
06-15-2026

$155.46 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Charge Air Cooler Expansion Tank

ES#2993908 - 17138617045 - Charge Air Cooler Expansion Tank - Replace your cracked or leaking tank - Genuine BMW - BMW

Replace your cracked or leaking tank

Brand:
Genuine BMW - Corporate Logo
ES#:
2993908
Mfg#:
17138617045
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.

$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

Expansion Tank

ES#3417744 - 17138617048 - Expansion Tank - Genuine BMW - BMW

Brand:
Genuine BMW - Corporate Logo
ES#:
3417744
Mfg#:
17138617048
Special Order: No Guaranteed ETA
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

ES#37533 - 17107514964 - Coolant Expansion Tank - Includes bleeder screw - Genuine BMW - BMW

Includes bleeder screw

Brand:
Genuine BMW - Corporate Logo
ES#:
37533
Mfg#:
17107514964
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.

$160.99

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

$151.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Carbon Coolant Expansion Tank Cap Cover (Gloss Carbon)

ES#4900217 - BM-0803-GC - Carbon Coolant Expansion Tank Cap Cover (Gloss Carbon) - Upgrade to AutoTecknics Pre-Preg Carbon Fiber Coolant Expansion Tank Cap Cover and give your BMW the exclusive, high-performance look it deserves. - AUTOTECKNIC - BMW

Upgrade to AutoTecknic’s Pre-Preg Carbon Fiber Coolant Expansion Tank Cap Cover and give your BMW the exclusive, high-performance look it deserves.

Brand:
AUTOTECKNIC - Corporate Logo
ES#:
4900217
Mfg#:
BM-0803-GC
Ships in 8 Business Days
$74.99 USD
Free Shipping
on orders $49 and up

Expansion Tank

ES#3504789 - 17137501959 - Expansion Tank - Includes vent screw and leveling switch - Rein - BMW

Includes vent screw and leveling switch 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
3504789
Mfg#:
17137501959
Ships in 3 Business Days
$74.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator To Expansion Tank Hose - 1 Meter

ES#37639 - 17111150232 - Radiator To Expansion Tank Hose - 1 Meter - Runs from the radiator to the expansion tank - Genuine BMW - BMW

Runs from the radiator to the expansion tank

Brand:
Genuine BMW - Corporate Logo
ES#:
37639
Mfg#:
17111150232
Ships in 3 Business Days
$14.99 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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