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BMW M3 Cooling Expansion Tank Parts

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Coolant Level Sensor

ES#166579 - 61311378320 - Coolant Level Sensor - Located on the top of the coolant expansion tank - Genuine BMW - BMW

Located on the top of the coolant expansion tank

Brand:
Genuine BMW - Corporate Logo
ES#:
166579
Mfg#:
61311378320
Ships in 3 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
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Fluid Level Sensor

ES#260195 - 17137524812 - Fluid Level Sensor - This sensor is used in multiple locations, depending on model: coolant level, washer level, and power steering level - URO - 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:
URO - Corporate Logo
ES#:
260195
Mfg#:
17137524812
In Stock
$10.59 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Billet Coolant Reservoir Cap - Anodized Clear

ES#4505865 - CO0LANTCAPRAW - Billet Coolant Reservoir Cap - Anodized Clear - 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!
This coolant cap retains ALL of the factory provisions by simply allowing you to snap the factory pressure-relief into the new Billet Cap

Brand:
Vargas Turbo Technologies - Corporate Logo
ES#:
4505865
Mfg#:
CO0LANTCAPRAW
Ships in 6 Business Days
$78.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Level Sensor

ES#168105 - 61318360855 - Coolant Level Sensor - Monitors the coolant level in the expansion tank - Genuine BMW - BMW

Monitors the coolant level in the expansion tank

Brand:
Genuine BMW - Corporate Logo
ES#:
168105
Mfg#:
61318360855
Ships in 3 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

ECS S54 Exact-fit Waterpipe Connecting Line

ES#3230751 - 013178ecsKT - ECS S54 Exact-fit Waterpipe Connecting Line - Engineered in-house with perfectly formed fitment for a stronger, cleaner install. - ECS - BMW

Engineered in-house with perfectly formed fitment for a stronger, cleaner install. 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3230751
Mfg#:
013178ECSKT
In Stock
ON SALE! SAVE 25%
$148.99

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

$111.74 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.

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

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.

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 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 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

Oil Cooler Hose

ES#2775491 - 17122284688 - Oil Cooler Hose - Hose from the auxiliary radiator in the wheel housing to the main Radiator. - Genuine BMW - BMW

Hose from the auxiliary radiator in the wheel housing to the main Radiator.

Brand:
Genuine BMW - Corporate Logo
ES#:
2775491
Mfg#:
17122284688
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.

$109.99

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

$102.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Replacement Kit

ES#2586754 - 17111723520KT2 - Expansion Tank Replacement Kit - Includes all necessary hardware - Genuine BMW - BMW

Includes all necessary hardware

Brand:
Genuine BMW - Corporate Logo
ES#:
2586754
Mfg#:
17111723520KT2
Ships in 3 Business Days
$399.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Billet Coolant Reservoir Cap - Anodized Black

ES#4505863 - CO0LANTCAPBLK - Billet Coolant Reservoir Cap - Anodized Black - 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#:
4505863
Mfg#:
CO0LANTCAPBLK
Back Ordered
Auto Notify
$79.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

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

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

Brand:
Genuine BMW - Corporate Logo
ES#:
2602634
Mfg#:
17112283344KT
Ships in 3 Business Days
$460.99

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

$377.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Expansion Tank Hose

ES#2534580 - 17111723521 - Expansion Tank Hose - Connects the expansion tank to the radiator - URO - BMW

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

Brand:
URO - Corporate Logo
ES#:
2534580
Mfg#:
17111723521
In Stock
$6.42 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

E30 Expansion Tank

ES#36928 - 16131178014 - E30 Expansion Tank - Genuine BMW - BMW

Brand:
Genuine BMW - Corporate Logo
ES#:
36928
Mfg#:
16131178014
Ships in 9 Business Days
3% off MSRP

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

$373.00

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

$360.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Replacement Kit

ES#3236073 - 17112283344KT2 - Expansion Tank Replacement Kit - Includes ECS S54 Exact-fit Water Pipe Connecting Line! - Assembled By ECS - BMW

Includes ECS S54 Exact-fit Water Pipe Connecting Line! 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
3236073
Mfg#:
17112283344KT2
Ships in 3 Business Days
ON SALE!
$389.99

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

$356.08 USD
Free Shipping
This product is lifetime replacement eligible Partial 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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