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BMW Cooling Expansion Tank Parts

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Coolant Expansion Tank

ES#263501 - 17111723520 - Coolant Expansion Tank - Replace your leaking or cracked expansion tank - Mahle-Behr - BMW

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

Brand:
Mahle-Behr - Corporate Logo
ES#:
263501
Mfg#:
17111723520
In Stock at Vendor
$97.62

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

$77.22 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Replacement Kit

ES#2602634 - 17112283344KT - Expansion Tank Replacement Kit - Includes all necessary hardware - Genuine BMW - BMW

Includes all necessary hardware affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
2602634
Mfg#:
17112283344KT
Ships in 1 day
$460.99

This product was last offered at the strikethrough price on
05-07-2026

$455.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Intercooler Expansion Tank

ES#2720067 - 17137647281 - Intercooler Expansion Tank - Stop your coolant leak with a new expansion tank - Genuine BMW - BMW

Stop your coolant leak with a new expansion tank affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
2720067
Mfg#:
17137647281
Ships in 1 day
7% 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
06-04-2026

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

Performance Aluminum Expansion Tank

Keep your car cool and prepared for hot conditions and end "spontaneous combustion" of plastic expansion tanks. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Moroso - Corporate Logo
ES#:
3659548
Mfg#:
63791
Back Ordered
$445.99 USD
Free Shipping
on orders $49 and up

Coolant Level Sensor

ES#4818660 - 61311378320 - Coolant Level Sensor - Located on the top of the coolant expansion tank - Bremmen Parts - BMW

Located on the top of the coolant expansion tank affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4818660
Mfg#:
61311378320
In Stock
ON SALE! SAVE 56%
$34.99

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

$15.29 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Blue Engine Coolant Reservoir Cap

ES#4883000 - 201-0393-BLU - Blue 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! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Precision Raceworks - Corporate Logo
ES#:
4883000
Mfg#:
201-0393-BLU
In Stock
$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

Coolant Expansion Tank N12 N14 N16 N18 1.6L Engine

ES#2808751 - 17137823626 - Coolant Expansion Tank N12 N14 N16 N18 1.6L Engine - Mounts towards the front of the engine bay - Vaico - BMW MINI

Mounts towards the front of the engine bay affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
2808751
Mfg#:
17137823626
In Stock at Vendor
$148.99

This product was last offered at the strikethrough price on
05-07-2026

$144.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Performance Aluminum Expansion Tank

ES#3659552 - 63793 - Performance Aluminum Expansion Tank - Keep your car cool and prepared for hot conditions and end "spontaneous combustion" of plastic expansion tanks. - Moroso - BMW

Keep your car cool and prepared for hot conditions and end "spontaneous combustion" of plastic expansion tanks. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Moroso - Corporate Logo
ES#:
3659552
Mfg#:
63793
In Stock at Vendor
$433.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank Overflow Hose

ES#5341126 - 17125A022D6 - Coolant Expansion Tank Overflow Hose - Connects the expansion tank to the radiator - Rein - BMW

Connects the expansion tank to the radiator affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For early models with the Gen1 B46/B48 engine - Not for vehicles with the later TU engines

Brand:
Rein - Corporate Logo
ES#:
5341126
Mfg#:
17125A022D6
Back Ordered
Auto Notify
$35.99 USD
Free Shipping
on orders $49 and up

Coolant Expansion Tank

ES#3148877 - 17111741167 - Coolant Expansion Tank - Plastic has a limited lifespan - replace every 80,000 miles - Rein - BMW

Plastic has a limited lifespan - replace every 80,000 miles affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
3148877
Mfg#:
17111741167
In Stock
$69.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap

ES#3015898 - 17137639023 - Expansion Tank Cap - 1.4 Bar pressure - Genuine BMW - BMW

1.4 Bar pressure affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with production date from 09/1987

Brand:
Genuine BMW - Corporate Logo
ES#:
3015898
Mfg#:
17137639023
Ships in 2 Business Days
$21.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Sensor Extension Harness

ES#4364623 - 201-0050 - Coolant Sensor Extension Harness - Allows you to relocate your coolant reservoir or run the 335d reservoir - Precision Raceworks - BMW

Allows you to relocate your coolant reservoir or run the 335d reservoir affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Precision Raceworks - Corporate Logo
ES#:
4364623
Mfg#:
201-0050
In Stock
$19.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#3504785 - 17137542986 - Coolant Expansion Tank - Includes fluid level sensor - Rein - BMW

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

Brand:
Rein - Corporate Logo
ES#:
3504785
Mfg#:
17137542986
Ships in 1 Business Day
$82.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#4753506 - 17138742660 - Coolant Expansion Tank - Replaces cracked, damaged, and leaking expansion tanks - URO - BMW

Replaces cracked, damaged, and leaking expansion tanks 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#:
4753506
Mfg#:
17138742660
Ships in 1 Business Day
$136.99 USD
Free Shipping
on orders $49 and up

Expansion Tank

ES#213550 - 17111114743 - Expansion Tank - Genuine BMW - BMW

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

Brand:
Genuine BMW - Corporate Logo
ES#:
213550
Mfg#:
17111114743
Ships in 1 day
5% off MSRP

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

$215.99

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

$204.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#37954 - 17112225352 - Coolant Expansion Tank - Replace your cracked & leaking tank - Genuine BMW - BMW

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

Brand:
Genuine BMW - Corporate Logo
ES#:
37954
Mfg#:
17112225352
Ships on Jun 22, 2026
5% off MSRP

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

$215.99

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

$204.99 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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