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BMW M3 Cooling Expansion Tank Parts

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

Brand:
Genuine BMW - Corporate Logo
ES#:
37897
Mfg#:
17111723521
Ships in 1-2 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
06-03-2026

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

Coolant level sensor

ES#2871884 - 61318360855 - Coolant level sensor - Monitors the coolant level in the expansion tank - Febi - BMW

Monitors the coolant level in the expansion tank affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
2871884
Mfg#:
61318360855
In Stock
ON SALE! SAVE 34%
$18.22

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

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

Expansion Tank Hose

ES#2622976 - 17111723521 - Expansion Tank 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
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
2622976
Mfg#:
17111723521
Ships in 2 Business Days
$16.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4941100
Mfg#:
17132754264
Ships on Jul 31, 2026
Auto Notify
ON SALE! SAVE 20%
$6.99

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

$5.59 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator Cap

ES#37974 - 17112227683 - Radiator Cap - Used to maintain proper pressure and boiling point of your cooling system - Genuine BMW - BMW

Used to maintain proper pressure and boiling point of your cooling system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
37974
Mfg#:
17112227683
In Stock
4% off MSRP

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

$27.99

This product was last offered at the strikethrough price on
06-03-2026

$26.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

MMX 90mm Billet Coolant Expansion Tank Cap | BMW

Dress Up Your BMW's Engine Bay With MMX's Billet Expansion Tank Cap! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
MMX Performance - Corporate Logo
ES#:
4809889
Mfg#:
MMR03-1502
Ships in 2 Business Days
$127.99 USD
Free Shipping
on orders $49 and up

Expansion Tank Hose

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

Prevents coolant spills 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#:
2802712
Mfg#:
17121712736
In Stock
$13.99 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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
For vehicles with production date up to 06/1995

Brand:
URO - Corporate Logo
ES#:
2828539
Mfg#:
61311384739
In Stock
$13.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#4875596 - 17138093924 - Coolant Expansion Tank - Replace your cracked or faded tank - URO - BMW

Replace your cracked or faded tank 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#:
4875596
Mfg#:
17138093924
Ships in 2 Business Days
$116.99 USD
Free Shipping
on orders $49 and up

Expansion Tank Cap Seal

ES#37900 - 17111723580 - Expansion Tank Cap Seal - Keep your coolant in. - Genuine BMW - BMW

Keep your coolant in. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
37900
Mfg#:
17111723580
In Stock at Vendor
$12.99 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. 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#:
205244
Mfg#:
17111742231
In Stock
$17.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Level Sensor

ES#2795984 - 61318360855 - Coolant Level Sensor - Monitors the coolant level in the expansion tank - URO - BMW

Monitors the coolant level in the expansion tank 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#:
2795984
Mfg#:
61318360855
In Stock
$12.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant level sensor

ES#2871875 - 61311384739 - Coolant level sensor - Located on the expansion tank - Febi - BMW

Located on the expansion tank affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
For vehicles with production date up to 06/1995

Brand:
Febi - Corporate Logo
ES#:
2871875
Mfg#:
61311384739
In Stock
$16.99 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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 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

Silver Auxiliary Coolant Reservoir Cap

ES#4882956 - 201-0394-SIL - Silver 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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Precision Raceworks - Corporate Logo
ES#:
4882956
Mfg#:
201-0394-SIL
Ships in 8 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

Blue Auxiliary Coolant Reservoir Cap

ES#4882951 - 201-0394-BLU - Blue 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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Precision Raceworks - Corporate Logo
ES#:
4882951
Mfg#:
201-0394-BLU
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

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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