A-B1796853-AI CAMSHAFTOne New Aftermarket Replacement Camshaft Fits Briggs and Stratton (B&S) V Twin Engines This aftermarket replacement camshaft Fits Briggs and Stratton (B&S) V twin small engines used in riding lawn mowers, lawn tractors, and outdoor power equipment. The camshaft controls the timing of the engine's intake and exhaust valves, synchronizing valve operation with crankshaft rotation for efficient combustion, smooth power delivery, and reliable engine