1978-1988 GM G-Body except Grand National Aluminum Performance Radiator and 12 Inch dual fan kit exc GN. These COLD-CASE radiators are Tig welded 100 percent aluminum and absolutely beautiful. Don't buy a 3 or 4 row aluminum radiator! It doesn't cool as good as these oversize 2 row models. These radiators are original appearing and have the correct stamping. Once painted, you'd be hard pressed to find a difference over an original versus a COLD-CASE. 100 percent TIG welded Fan Diameter 12 Inch All Aluminum (2) 1.25 inch Tubes Polished OE style tanks 16 fins per inch Corrugated fins that give more surface area and more thermal transfer Pressure tested For manual and auto trans Direct fitment for 78-88 G-Body Old Part Number: RPE544ATFK Radiator Specs Core Height 18.5 inch Core Width 26.5 inch Overall Height 18.5 inch Overall Width 31.5 inch Overall Thickness 6 inch Tubes (2) 1.25 inch Tubes Upper Hose 1.50 inch Lower Hose 1.75 inch