This high-quality, Scott Drake reproduction of the pair of upper and lower radiator hoses is ideal for 1965-1969 Mustangs with a late-model 5.0L engine swap. These hoses are used with reverse-rotation water pumps with the outlet on the driver side. The lower radiator hose contains a stainless steel spring to prevent the hose from bending and collapsing. The outside of the hoses have a rubbery-black finish with zero logos to clutter the look of your underhood compartment. The dimension of the lower inlet and outlet is 1-1/2 inches, and the dimension of the upper inlet and outlet is 1-3/4 inches.