1984-1987 Buick Regal Grand National Aluminum Performance Radiator. Night Rider Black Series. This radiator has the correct oil and trans fittings used on the 86-87 models. Some cars must modify part of the radiator support for this radiator to fit. See picture above. 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 (2) 1.25 inch Tubes OE style tanks 16 fins per inch Corrugated fins that give more surface area and more thermal transfer Pressure tested For automatic trans Direct fitment for 84-87 Turbo Regal GN Works with factory fan shroud Radiator Specs: Core Height 16.75 inch Core Width 26 inch Overall Height 18.5 inch Overall Width 32 inch Overall Thickness 3 inch Upper Hose 1.25 inch Lower Hose 1.5 inch Tubes (2) 1.25 inch Tubes Trans Cooler Fitting Size: 1/8 Inch National Pipe Thread