This triple pass style radiator is a must in the 305 sprint class. The 305’s run hotter than other sprint car classes and the triple pass radiator usually runs about 20 to 40 degrees cooler than other radiators. Has dzus in mounts that fit most sprint car frames and 4 #10 female o-ring fittings on left side. Although popular in 305’s, this radiator will work in any class. Uses a small cap. Cap is NOT included. Dimensions are 20-1/2” wide x 17-1/2” high x 2” thick and weighs 9.25 lbs