A-02190007-AI Gear, Camshaft TimingOne New Aftermarket Replacement Camshaft Timing Gear Fits Allis Chalmers Tractors This camshaft timing gear is part of the Perkins A3. 152 AD3. 152 engine timing system used in Fits Allis Chalmers 160 and 6040 tractors, as well as compatible Fits Ford, Fits Massey Ferguson, and Landini equipment. It synchronizes the camshaft with the crankshaft to ensure precise valve timing and fuel injection intervals. This is a direct aftermarket replacement for