Stainless steel tank captures coolant overflow and recirculates it to the radiator. Machined aluminum cap twists into the filler neck and seals with an O-ring. Inlet/outlet fittings accept 1/4" diameter hose. Unit includes mounting brackets and hardware. Measurements are of tank body; add 2" for overall length.Pit Stop USA offers Allstar Performance Stainless Steel Overflow Tank - 2" x 15" Long ALL36151 at low everyday prices. Be sure to check out all of our products from Allstar Performance including Allstar Performance Overflow and Expansion Tanks.