Dorman 603-885 Coolant Reservoir / Overflow Tank - Replacement For 2013-2015 Acura ILX & 2012-2015 Honda Civic

Seeing a crack or leak in your car's plastic coolant overflow tank?

Don't ignore it—that's a fast track to overheating.

This Dorman 603-885 is a direct replacement reservoir designed specifically for certain Acura ILX (2013-2015) and Honda Civic (2012-2015) models.

Always, always use the garage tool or check your specific year/trim to confirm fit before buying!

Dorman is a giant in the aftermarket parts world, and this tank is made from quality materials to handle the heat and vibration under your hood.

It's engineered to match the original part's shape, mounting points, and hose connections, so installation is usually a straightforward swap: drain some coolant, disconnect a couple of hoses and maybe a sensor, unbolt the old tank, bolt in the new one, reconnect everything, and refill the coolant.

Fixing a leaking reservoir is a common and relatively easy DIY job that can save you from a roadside breakdown.

A trustworthy, affordable fix from a brand with a century of experience.