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BMW Cooling Expansion Tank Parts

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Expansion Tank Hose

ES#4900427 - 17121712736 - Expansion Tank Hose - Prevents coolant spills - Bremmen Parts - BMW

Prevents coolant spills 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bremmen Parts - Corporate Logo
ES#:
4900427
Mfg#:
17121712736
In Stock
ON SALE! SAVE 15%
$15.99

This product was last offered at the strikethrough price on
09-16-2026

$13.59 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Carbon Charge Cooler Tank Cap Cover (Gloss)

ES#4904982 - BM-0032 - Carbon Charge Cooler Tank Cap Cover (Gloss) - Take your BMW to the next level with the AutoTecknic Dry Carbon Fiber Charge Cooler Reservoir Cap Cover. - AUTOTECKNIC - BMW

Take your BMW to the next level with the AutoTecknic Dry Carbon Fiber Charge Cooler Reservoir Cap Cover.

Brand:
AUTOTECKNIC - Corporate Logo
ES#:
4904982
Mfg#:
BM-0032
In Stock
Limited Qty Sale
$64.99

This product was last offered at the strikethrough price on
09-16-2026

$57.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#3162684 - 17138616418 - Coolant Expansion Tank - Replaced your cracked unit with a new coolant expansion tank - Rein - BMW

Replaced your cracked unit with a new coolant expansion tank 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
3162684
Mfg#:
17138616418
In Stock at Vendor
$85.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#2733851 - 17138616418 - Coolant Expansion Tank - Replaced your cracked unit with a new coolant expansion tank - Genuine BMW - BMW

Replaced your cracked unit with a new coolant expansion tank

Brand:
Genuine BMW - Corporate Logo
ES#:
2733851
Mfg#:
17138616418
Ships in 1-2 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.

$180.99

This product was last offered at the strikethrough price on
10-25-2026

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

Cooling O-Ring - Priced Each

ES#3448838 - 17111711987 - Cooling O-Ring - Priced Each - Fits various components in the cooling system - MTC - BMW

Fits various components in the cooling system

Brand:
MTC - Corporate Logo
ES#:
3448838
Mfg#:
17111711987
Back Ordered
$2.99 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 1-2 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
10-25-2026

$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 1-2 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
10-25-2026

$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 1-2 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
10-25-2026

$160.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank

ES#37610 - 17111116721 - Expansion Tank - Stop your coolant leak with a new expansion tank - Genuine BMW - BMW

Stop your coolant leak with a new expansion tank For vehicles with production date up to 09/1982

Brand:
Genuine BMW - Corporate Logo
ES#:
37610
Mfg#:
17111116721
Ships in 4 Business Days
2% off MSRP

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

$164.99

This product was last offered at the strikethrough price on
10-25-2026

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

Coolant Expansion Tank

ES#5341174 - 17139485733 - Coolant Expansion Tank - Prevents overheating, OE fit, durable materials, heat resistant, pressure-tested. - Rein - BMW

Prevents overheating, OE fit, durable materials, heat resistant, pressure-tested. 2X Entries Into Our F80 M3 Sweepstakes

Brand:
Rein - Corporate Logo
ES#:
5341174
Mfg#:
17139485733
In Stock at Vendor
$54.99

This product was last offered at the strikethrough price on
05-13-2026

$52.99 USD
Free Shipping
on orders $49 and up

Expansion Tank Replacement Kit

ES#2863198 - 17107514964KT - Expansion Tank Replacement Kit - Includes a level sensor, cap, and hoses. - Assembled By ECS - BMW

Includes a level sensor, cap, and hoses. 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
2863198
Mfg#:
17107514964KT
Ships in 4 Business Days
ON SALE! SAVE 26%
$215.99

This product was last offered at the strikethrough price on
05-29-2026

$158.84 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Hose Clamp - Priced Each

ES#54801 - 32411712735 - Hose Clamp - Priced Each - 12mm-14.5mm diameter - Genuine BMW - BMW

12mm-14.5mm diameter

Brand:
Genuine BMW - Corporate Logo
ES#:
54801
Mfg#:
32411712735
In Stock
$2.99 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
10-25-2026

$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 Into Our F80 M3 Sweepstakes
For Pre-LCI models with the earlier Gen1 B46 engine only

Brand:
Rein - Corporate Logo
ES#:
5341132
Mfg#:
17127535528
Back Ordered
$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

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
10-25-2026

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

Coolant Expansion Tank

ES#3464807 - 17117573751 - Coolant Expansion Tank - Does not include cap or coolant level sensor - Mahle-Behr - BMW

Does not include cap or coolant level sensor

Brand:
Mahle-Behr - Corporate Logo
ES#:
3464807
Mfg#:
17117573751
Ships on Nov 11, 2026
$75.99 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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