Valve Spring Compressor

Remove and replace valve springs in GM 8-cylinder engines. Heavy-duty tool replaces weak or broken valve springs and guide seals with cylinder head on the engine. Compressor is used by removing rocker and fastening tool to stud with nut. Pull on the handle to compress spring. Use with 901 or 2992 Air Hold Fittings to keep valve closed. Length: 12-1/2_.