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BMW E34 Cooling Expansion Tank Parts

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Coolant Expansion Tank

ES#2918552 - 17111712835 - 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#:
2918552
Mfg#:
17111712835
Ships in 10 Business Days
$20.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap

ES#205244 - 17111742231 - Expansion Tank Cap - Replace when performing cooling service. - Rein - BMW
ECS Tuning recommends this product.

Replace when performing cooling service. 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
205244
Mfg#:
17111742231
In Stock
$17.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Hose

ES#2802712 - 17121712736 - Expansion Tank Hose - Prevents coolant spills - Rein - BMW

Prevents coolant spills 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
2802712
Mfg#:
17121712736
In Stock
$13.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Hose

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

Prevents coolant spills 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4900427
Mfg#:
17121712736
In Stock
ON SALE! SAVE 24%
$15.99

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

$12.23 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Level Sensor

ES#2828539 - 61311384739 - Coolant Level Sensor - Located on the expansion tank - URO - BMW

Located on the expansion tank 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2828539
Mfg#:
61311384739
In Stock
Limited Qty Sale
$13.99

This product was last offered at the strikethrough price on
06-17-2026

$11.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#3148875 - 17111712835 - Coolant Expansion Tank - Does not include cap or coolant level sensor - Rein - BMW

Does not include cap or coolant level sensor 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
3148875
Mfg#:
17111712835
In Stock
$23.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Level Sensor

ES#166702 - 61311384739 - Coolant Level Sensor - Located on the expansion tank - Genuine BMW - BMW

Located on the expansion tank

Brand:
Genuine BMW - Corporate Logo
ES#:
166702
Mfg#:
61311384739
Ships in 6 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.

$92.99

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

$90.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap

ES#2187552 - 17111742231 - Expansion Tank Cap - Replace when performing cooling service. - URO - BMW

Replace when performing cooling service. 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2187552
Mfg#:
17111742231
In Stock at Vendor
$11.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant expansion tank

ES#3464805 - 17111719110 - Coolant expansion tank - Replace your cracked leaking tank to avoid over heating - Mahle-Behr - BMW

Replace your cracked leaking tank to avoid over heating

Brand:
Mahle-Behr - Corporate Logo
ES#:
3464805
Mfg#:
17111719110
In Stock
Limited Qty Sale
$75.99

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

$65.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap

ES#261723 - 17111742232 - Expansion Tank Cap - 1.4 Bar pressure - Mahle-Behr - BMW

1.4 Bar pressure

Brand:
Mahle-Behr - Corporate Logo
ES#:
261723
Mfg#:
17111742232
Ships in 1 Business Day
$18.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap

ES#2534584 - 17111468077 - Expansion Tank Cap - 1.4 Bar pressure - URO - BMW

1.4 Bar pressure 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2534584
Mfg#:
17111468077
Back Ordered
Auto Notify
$6.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Sensor O-Ring

ES#2800123 - 61311361249 - Coolant Sensor O-Ring - Found on the end of the coolant level sensor. Made in Germany. - Rein - BMW

Found on the end of the coolant level sensor. Made in Germany. 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
2800123
Mfg#:
61311361249
In Stock at Vendor
$6.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#2814076 - 17111712835 - Coolant Expansion Tank - Does not include cap or coolant level sensor - Hamburg Tech - BMW

Does not include cap or coolant level sensor We Price Match - Give Us A Call or Chat!

Brand:
Hamburg Tech - Corporate Logo
ES#:
2814076
Mfg#:
17111712835
Ships in 2 Business Days
$19.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap

ES#2814079 - 17111742231 - Expansion Tank Cap - Replace worn or missing pieces. - Hamburg Tech - BMW

Replace worn or missing pieces. We Price Match - Give Us A Call or Chat!

Brand:
Hamburg Tech - Corporate Logo
ES#:
2814079
Mfg#:
17111742231
Ships in 2 Business Days
$9.17 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank With Cap

ES#5374552 - EPK0012 - Coolant Expansion Tank With Cap - Does not include cap or coolant level sensor - Rein - BMW

Does not include cap or coolant level sensor 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Rein - Corporate Logo
ES#:
5374552
Mfg#:
EPK0012
Back Ordered
$29.99 USD
Free Shipping
on orders $49 and up

Expansion Tank Sealing O-Ring

ES#38540 - 17211712965 - Expansion Tank Sealing O-Ring - Seals the expansion tank to the base of the radiator - Genuine BMW - BMW

Seals the expansion tank to the base of the radiator

Brand:
Genuine BMW - Corporate Logo
ES#:
38540
Mfg#:
17211712965
In Stock
17% off MSRP

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

$5.99

This product was last offered at the strikethrough price on
05-22-2026

$4.99 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.

Let us help you find the parts that fit your BMW

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Manufacturer names and/or part numbers are used only for identification purposes.

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