55-56 Tri-5 Chevy Aluminum Radiator And 16 Inch Fan Kit 6 Cyl (Front Mount). Straight 6 position cars for mount In Front of radiator support. Direct fit for 55-56 cars. 57 owners must use RPE563-7 for proper hood clearance. 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 16 Inch All Aluminum Polished OE style tanks 16 fins per inch Corrugated fins that give more surface area and more thermal transfer Pressure tested For manual/auto trans Direct fitment for 55-56 Chevy (Straight 6 position mount) Old Part Number: RPE563K Radiator Specs Core Height 17 inch Core Width 21.5 inch Overall Height 23.5 To Cap Overall Width 23.5 inch Overall Thickness 3 inch Tubes (2) 1.25 inch Tubes Upper Hose 1.50 inch Lower Hose 1.75 inch