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BMW Cooling Expansion Tank Parts

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E38 Coolant Return line

ES#2801323 - 17111737708 - E38 Coolant Return line - From expansion tank to radiator - Rein - BMW

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

Brand:
Rein - Corporate Logo
ES#:
2801323
Mfg#:
17111737708
Ships in 4 Business Days
$9.17

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

$9.06 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap

ES#2091428 - 17111742232 - Expansion Tank Cap - 1.4 Bar pressure - MTC - BMW

1.4 Bar pressure

Brand:
MTC - Corporate Logo
ES#:
2091428
Mfg#:
17111742232
Ships in 10 Business Days
$6.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Mounting Clamp

ES#2814070 - 17111707777 - Expansion Tank Mounting Clamp - Locks the expansion tank into the mounting plate via the large hole in the bottom of the tank - Hamburg Tech - BMW

Locks the expansion tank into the mounting plate via the large hole in the bottom of the tank We Price Match - Give Us A Call or Chat!

Brand:
Hamburg Tech - Corporate Logo
ES#:
2814070
Mfg#:
17111707777
Ships in 2 Business Days
$6.11 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank

ES#5432883 - 17139884859 - Expansion Tank - Bremmen Parts - BMW

10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
5432883
Mfg#:
17139884859
In Stock
ON SALE! SAVE 20%
$101.99

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

$81.59 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#5425971 - 17135A6A030 - Coolant Expansion Tank - Replaces missing or cracked coolant expansion tank. - Meyle - BMW

Replaces missing or cracked coolant expansion tank. 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Meyle - Corporate Logo
ES#:
5425971
Mfg#:
17135A6A030
In Stock
ON SALE!
$75.99

This product was last offered at the strikethrough price on
07-14-2026

$73.71 USD
Free Shipping
on orders $49 and up

Coolant Expansion Tank

Includes bleeder screw and level sensor 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4338778
Mfg#:
17107514964
In Stock
ON SALE! SAVE 16%
$63.99

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

$53.75 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Replacement Kit - Level 2

ES#2795125 - 17117573781KT5 - Expansion Tank Replacement Kit - Level 2 - Upgraded to include a new transmission thermostat and mounting plate - both commonly damaged during expansion tank replacement. - Assembled By ECS - BMW

Upgraded to include a new transmission thermostat and mounting plate - both commonly damaged during expansion tank replacement. 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2795125
Mfg#:
17117573781KT5
Ships in 4 Business Days
ON SALE! SAVE 24%
$281.99

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

$214.92 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Coolant Expansion Tank Kit

ES#4776041 - 17138677649EKT - Coolant Expansion Tank Kit - Includes both the Engine Coolant Expansion Tank and Charge Air Cooler Coolant Expansion Tank, plus both of the expansion tank caps - Assembled By ECS - BMW

Includes both the Engine Coolant Expansion Tank and Charge Air Cooler Coolant Expansion Tank, plus both of the expansion tank caps 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
4776041
Mfg#:
17138677649EKT
In Stock at Vendor
ON SALE!
$208.99

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

$198.66 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Carbon Coolant Expansion Tank Cap Cover (Red Carbon)

ES#4900218 - BM-0803-RC - Carbon Coolant Expansion Tank Cap Cover (Red Carbon) - Upgrade to AutoTecknics Pre-Preg Carbon Fiber Coolant Expansion Tank Cap Cover in Red Carbon and give your BMW the exclusive, high-performance look it deserves. - Autotech - BMW

Upgrade to AutoTecknic’s Pre-Preg Carbon Fiber Coolant Expansion Tank Cap Cover in Red Carbon and give your BMW the exclusive, high-performance look it deserves.

Brand:
Autotech - Corporate Logo
ES#:
4900218
Mfg#:
BM-0803-RC
Ships in 8 Business Days
$74.99 USD
Free Shipping
on orders $49 and up

Coolant Expansion Tank

ES#4343543 - 17137590626 - Coolant Expansion Tank - Includes sensor - Febi - BMW

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

Brand:
Febi - Corporate Logo
ES#:
4343543
Mfg#:
17137590626
In Stock at Vendor
$123.99

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

$120.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Rein Coolant Expansion Tank - With Cap

ES#5470511 - 17135A6A030C - Rein Coolant Expansion Tank - With Cap - Replace your old brittle expansion tank - Rein - BMW

Replace your old brittle expansion tank 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Rein - Corporate Logo
ES#:
5470511
Mfg#:
17135A6A030C
Ships in 4 Business Days
$99.99 USD

Expansion Tank With Cap

ES#5374576 - EPK0138 - Expansion Tank With Cap - Includes vent screw and leveling switch - Rein - BMW

Includes vent screw and leveling switch 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Rein - Corporate Logo
ES#:
5374576
Mfg#:
EPK0138
Ships in 4 Business Days
$71.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#5491333 - 171386106612 - Coolant Expansion Tank - Coolant reservoir tank dedicated to the intake charge air cooler system - Rein - BMW

Coolant reservoir tank dedicated to the intake charge air cooler system 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Rein - Corporate Logo
ES#:
5491333
Mfg#:
171386106612
Ships in 4 Business Days
$49.99 USD

Expansion Tank

ES#3221064 - 17137601948 - Expansion Tank - Cooling system expansion tank - Rein - BMW

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

Brand:
Rein - Corporate Logo
ES#:
3221064
Mfg#:
17137601948
Ships in 4 Business Days
$118.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Kit

ES#5491326 - 17138610661 - Expansion Tank Kit - Coolant reservoir tank dedicated to the intake charge air cooler system - Rein - BMW

Coolant reservoir tank dedicated to the intake charge air cooler system 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Rein - Corporate Logo
ES#:
5491326
Mfg#:
17138610661
Ships in 4 Business Days
$56.99 USD
Free Shipping
on orders $49 and up

Coolant Expansion Tank Overflow Hose

ES#5341128 - 17125A02485 - Coolant Expansion Tank Overflow Hose - Connects the expansion tank to the radiator - Rein - BMW

Connects the expansion tank to the radiator 2X Entries For Our 25th Anniversary Sweepstakes!
For Pre-LCI models only

Brand:
Rein - Corporate Logo
ES#:
5341128
Mfg#:
17125A02485
Ships in 4 Business Days
$41.99 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.

Other BMW Cooling Expansion Tank Parts

Let us help you find the parts that fit your BMW

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