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BMW Cooling Expansion Tank Parts

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Expansion Tank

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

Cooling system expansion tank 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
3221064
Mfg#:
17137601948
Back Ordered
ON SALE!
$118.99

This product was last offered at the strikethrough price on
08-31-2026

$113.04 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank Hose

ES#5341131 - 17127535536 - Coolant Expansion Tank Hose - Connects the heat management module to the expansion tank's lower port - Rein - BMW

Connects the heat management module to the expansion tank's lower port 2X Entries Into Our F80 M3 Sweepstakes
For Pre-LCI models with the earlier Gen1 B46 engine only

Brand:
Rein - Corporate Logo
ES#:
5341131
Mfg#:
17127535536
Back Ordered
ON SALE!
$76.00

This product was last offered at the strikethrough price on
05-13-2026

$70.20 USD
Free Shipping
on orders $49 and up

Coolant Expansion Tank Overflow Hose

ES#5341135 - 17128651298 - Coolant Expansion Tank Overflow Hose - Connects the expansion tank to the upper radiator hose - Rein - BMW

Connects the expansion tank to the upper radiator hose 2X Entries Into Our F80 M3 Sweepstakes

Brand:
Rein - Corporate Logo
ES#:
5341135
Mfg#:
17128651298
Back Ordered
ON SALE!
$31.99

This product was last offered at the strikethrough price on
08-31-2026

$29.89 USD
Free Shipping
on orders $49 and up

Expansion Tank With Cap - E6x

ES#5374546 - EPK0128 - Expansion Tank With Cap - E6x - Includes fluid level sensor - Rein - BMW

Includes fluid level sensor 2X Entries Into Our F80 M3 Sweepstakes

Brand:
Rein - Corporate Logo
ES#:
5374546
Mfg#:
EPK0128
Back Ordered
ON SALE! SAVE 19%
$86.99

This product was last offered at the strikethrough price on
04-27-2026

$70.50 USD
Free Shipping
on orders $49 and up

Engine Coolant Reservoir

ES#5447444 - EPT0274 - Engine Coolant Reservoir - OE-quality coolant expansion tank engineered to withstand the intense heat cycles of BMW's 4.4L Twin-Turbocharged V8 engines. - Rein - BMW

OE-quality coolant expansion tank engineered to withstand the intense heat cycles of BMW's 4.4L Twin-Turbocharged V8 engines. 2X Entries Into Our F80 M3 Sweepstakes

Brand:
Rein - Corporate Logo
ES#:
5447444
Mfg#:
EPT0274
Back Ordered
ON SALE!
$114.99

This product was last offered at the strikethrough price on
08-31-2026

$109.24 USD
Free Shipping
on orders $49 and up

Radiator Expansion Tank Vent Line Hose

ES#4845471 - 17128651450 - Radiator Expansion Tank Vent Line Hose - Upgrade your BMWs cooling system with the Radiator Expansion Tank Vent Line Hose by Rein, ensuring optimal engine performance and protection against overheating. - Rein - BMW

Upgrade your BMW’s cooling system with the Radiator Expansion Tank Vent Line Hose by Rein, ensuring optimal engine performance and protection against overheating. 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
4845471
Mfg#:
17128651450
Back Ordered
ON SALE!
$57.99

This product was last offered at the strikethrough price on
08-31-2026

$54.62 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank

ES#4875594 - 17135A6A031 - Expansion Tank - Replace your cracked or faded tank - URO - BMW

Replace your cracked or faded tank 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
4875594
Mfg#:
17135A6A031
Back Ordered
$102.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank Cap

ES#2881545 - 17117639020 - Coolant Expansion Tank Cap - Keep that coolant expansion tank sealed - Vaico - BMW

Keep that coolant expansion tank sealed We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
2881545
Mfg#:
17117639020
Special Order: No Guaranteed ETA
$17.99 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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