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BMW M3 Cooling Expansion Tank Parts

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Engine Coolant Expansion Tank Cap

ES#4732065 - 17135A1BD89 - Engine Coolant Expansion Tank Cap - Replacement expansion tank cap for your BMW - Genuine BMW - BMW

Replacement expansion tank cap for your BMW

Brand:
Genuine BMW - Corporate Logo
ES#:
4732065
Mfg#:
17135A1BD89
In Stock
6% off MSRP

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

$34.99

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

$32.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Fluid Level Sensor

ES#2874178 - 17137553919 - Fluid Level Sensor - This sensor is used in multiple locations, depending on model: coolant level, washer level, and power steering level - Febi - BMW MINI

This sensor is used in multiple locations, depending on model: coolant level, washer level, and power steering level 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
2874178
Mfg#:
17137553919
In Stock
$18.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#37957 - 17112225543 - Coolant Expansion Tank - Houses excess engine coolant - Genuine BMW - BMW

Houses excess engine coolant

Brand:
Genuine BMW - Corporate Logo
ES#:
37957
Mfg#:
17112225543
In Stock
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
07-20-2026

$205.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Aluminum Coolant Expansion Tank

ES#4812413 - 63850 - Aluminum Coolant Expansion Tank - Eliminate your failure-prone plastic tank! - Moroso - BMW

Eliminate your failure-prone plastic tank!

Brand:
Moroso - Corporate Logo
ES#:
4812413
Mfg#:
63850
In Stock at Vendor
$586.00 USD
Free Shipping
on orders $49 and up

Engine Coolant Expansion Tank Cap

ES#4504673 - 17135A1BD89 - Engine Coolant Expansion Tank Cap - Replacement expansion tank cap for your MINI - Genuine MINI - BMW MINI

Replacement expansion tank cap for your MINI Fits the expansion tank for the intercooler system only

Brand:
Genuine MINI - Corporate Logo
ES#:
4504673
Mfg#:
17135A1BD89
Ships in 3 Business Days
9% off MSRP

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

$34.99

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

$31.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Billet Coolant Reservoir Cap - Anodized Red

ES#4505864 - CO0LANTCAPRED - Billet Coolant Reservoir Cap - Anodized Red - Upgrade the visual appeal of your engine bay with Vargas Turbo Technologies' Billet Caps! - Vargas Turbo Technologies - BMW

Upgrade the visual appeal of your engine bay with Vargas Turbo Technologies' Billet Caps! 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Vargas Turbo Technologies - Corporate Logo
ES#:
4505864
Mfg#:
CO0LANTCAPRED
In Stock
$79.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Black Aluminum Coolant Expansion Tank

ES#2951876 - MMRT-E36-92EBK - Black Aluminum Coolant Expansion Tank - Keep your car cool and prepared for hot conditions and end "spontaneous combustion" of plastic expansion tanks. - Mishimoto - BMW

Keep your car cool and prepared for hot conditions and end "spontaneous combustion" of plastic expansion tanks. Direct fitment with the Mishimoto fan shroud. Modification may be required with the OEM shroud.

Brand:
Mishimoto - Corporate Logo
ES#:
2951876
Mfg#:
MMRT-E36-92EBK
Back Ordered
Auto Notify
$195.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank

ES#2775458 - 17132284601 - Expansion Tank - Genuine BMW - BMW

Brand:
Genuine BMW - Corporate Logo
ES#:
2775458
Mfg#:
17132284601
Ships in 3 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.

$202.99

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

$190.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap

ES#3023872 - 17111742231 - Expansion Tank Cap - Replace when performing cooling service. - Mahle-Behr - BMW

Replace when performing cooling service.

Brand:
Mahle-Behr - Corporate Logo
ES#:
3023872
Mfg#:
17111742231
In Stock
$19.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Replacement Kit

ES#2586751 - 17111723520KT - Expansion Tank Replacement Kit - Includes a level sensor, cap and coolant - Assembled By ECS - BMW

Includes a level sensor, cap and coolant 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2586751
Mfg#:
17111723520KT
In Stock
ON SALE! SAVE 21%
$107.99

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

$85.73 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Expansion Tank

ES#38028 - 17112283500 - Expansion Tank - Stop your coolant leak with a new expansion tank - Genuine BMW - BMW

Stop your coolant leak with a new expansion tank

Brand:
Genuine BMW - Corporate Logo
ES#:
38028
Mfg#:
17112283500
Ships in 3 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.

$266.99

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

$251.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

E46 M3 Coolant Expansion Tank

ES#5396264 - 17112283344 - E46 M3 Coolant Expansion Tank - Replacement plastic expansion tank for BMW M3, includes sealing cap - URO - BMW

Replacement plastic expansion tank for BMW M3, includes sealing cap 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
URO - Corporate Logo
ES#:
5396264
Mfg#:
17112283344
Ships in 1 Business Day
ON SALE!
$155.99

This product was last offered at the strikethrough price on
06-25-2026

$148.19 USD
Free Shipping
on orders $49 and up

2 Pin Connector

ES#4772597 - 61132359999 - 2 Pin Connector - Includes connector housing with terminals and seals. Commonly used for the coolant level sensor. - ECS - BMW MINI

Includes connector housing with terminals and seals. Commonly used for the coolant level sensor. 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4772597
Mfg#:
61132359999
Ships in 5 Business Days
ON SALE! SAVE 25%
$10.99

This product was last offered at the strikethrough price on
06-13-2026

$8.24 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Level Sensor

ES#2695771 - 61311378320 - Coolant Level Sensor - Located on the top of the coolant expansion tank - Febi - BMW

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

Brand:
Febi - Corporate Logo
ES#:
2695771
Mfg#:
61311378320
In Stock
$26.17

This product was last offered at the strikethrough price on
07-09-2026

$23.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

E30 Over Flow Hose

ES#130509 - 51731911369 - E30 Over Flow Hose - Allows coolant overflow to escape from the expansion tank - Genuine BMW - BMW

Allows coolant overflow to escape from the expansion tank

Brand:
Genuine BMW - Corporate Logo
ES#:
130509
Mfg#:
51731911369
In Stock
2% off MSRP

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

$45.99

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

$44.99 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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