Find Parts That Fit Your Vehicle

Home
Cooling
Expansion Tanks

BMW Coolant Expansion Tanks

On certain models, namely E36, E46, and E90, the factory BMW expansion tank is prone to either breaking at connection points or blowing apart altogether. If you're starting to feel like your expansion tank is on borrowed time, it's probably time to replace with either a direct OE replacement, or strengthen your cooling setup with an aluminum expansion tank - we offer numerous performance upgrades for your expansion tank. Especially if you're someone who likes to track your BMW, we recommend upgrading your expansion tank to avoid ruining your track day.

This category contains parts that fit the following chassis:

Sort By:

URO Coolant Expansion Tank - BMW E46 M3

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

T#:48608189

Part#: 17112283344

Ships in 1 Business Day

$ 155.99 USD

Add to Wish List

Qty

$ 155.99 USD

Add to Wish List

This radiator coolant reservoir/expansion tank for E46 M3 is a common failure item as the plastic weakens and cracks, causing coolant leaks. If your E46 M3 has over 80k miles and still has the original expansion tank, we highly recommend replacing it during your next major service.

Show More Show Less

Rein Engine Coolant Reservoir - BMW G1X, G3X

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

T#:52516268

Part#: EPT0274

Back Ordered

$ 114.99 USD

Add to Wish List

Qty

$ 114.99 USD

Add to Wish List

Protect your BMW investment with the Rein EPT0274 Engine Coolant Reservoir, the professional’s choice for cooling system restoration.

Coolant Expansion Tank

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

T#:55749607

Part#: 17132284600

Ships in 1 Business Day

$ 168.99 USD

Add to Wish List

Qty

$ 168.99 USD

Add to Wish List

This URO Coolant Expansion Tank is a budget-conscious alternative that's designed to handle the rigorous fluid expansion and pressure demands of your M car.

Meyle Coolant Expansion Tank - BMW G0X X3 X4, F9X X3M X4M

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

T#:50066859

Part#: 17135A6A030

In Stock

$ 75.99 USD

Add to Wish List

Qty

$ 75.99 USD

Add to Wish List

Replaces cracked or aged coolant expansion tank.

Genuine BMW Coolant Expansion Tank - Low Temp Circuit - BMW G20 G22/2...

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

T#:49857448

Part#: 17135A270D3

Ships in 5 Business Days

6% off MSRP $ 170.99

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

$ 160.99 USD

Add to Wish List

Qty

6% off MSRP

$ 170.99

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

$ 160.99 USD

Add to Wish List

If your coolant reservoir tank has cracked or if one of the mounting points has broken, this is the perfect replacement to ensure your coolant system remains leak-free. This reservoir specifically works with the low-temp circuit, which is responsible for cooling your manifold-integrated intercooler

Show More Show Less