1955-1957 Chevrolet Tri-Five Aluminum Performance Radiator. Night Rider Black Series. V8 Position cars for mount behind (engine side) radiator support. For 6cyl mounting see part numbers CHT563AB and CHT563A-7B Our Night Rider Black series radiators blend performance with original appearance to give you the best of both worlds. You will be hard pressed to find a difference between an original versus a Cold-Case. These Cold-Case radiators are Tig welded 100 percent aluminum and feature OEM appearing stamped tanks. Perfect for that restored car wanting the appearance of stock without sacrificing performance. 100 percent TIG welded All Aluminum Powder Coated Black 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 55-57 Chevy (V8 position mount) Works with factory fan shroud Radiator Specs: Core Height 17 inch Core Width 22 inch Overall Height 23.5 To Cap Overall Width 23.5 inch Overall Thickness 3 inch Tubes (2) 1 inch Tubes Upper Hose 1.50 inch Lower Hose 1.75 inch Trans Cooler Fitting: 5/16 Inch Inverted Flare