Collection: Coolant Reservoir Tanks

A cracked, boiling, or brittle factory coolant tank is a guaranteed way to suck air into your cooling system and spew hot antifreeze all over the track or trail. Whether you need a reliable OEM plastic replacement to fix a daily driver or a heavy-duty, fabricated aluminum expansion tank to handle the extreme pressures of a massive diesel, trail rig, or high-horsepower monster, we’ve got the hardware to contain the pressure. Built for cars, heavy-hauling trucks, and rowdy powersports rigs, our premium coolant reservoirs deliver professional-grade fluid expansion control so your system stays fully burped and perfectly pressurized. Mount it up, top off that antifreeze, and let the big dog eat.