Radiator Universal Double Pass Closed 31 in x 19 in 1-3/4 in High Outlet. Our universal racing radiators are commonly used in Pavement Late Model, Road Racing, Drag Racing, Off-Road Racing, and Hot-Rod installations any application where high performance cooling is a must. These universal racing radiators are excellent, general purpose radiators capable of cooling up to 1000hp depending on the vehicle application and use. They are versatile because of the 2 rows of 1 in tubes and medium fin. The inlet accepts our -20 AN port universal adapter to suit your top hose connection and comes standard with a 1-3/4 in outlet. Available in single pass or double pass, open and closed system, suitable to accept optional fans on our mounts or shrouds, single or dual fans depending on the application.