Pumps being parts of [ machines, engines or ] motors; [ Camshafts for automobile engines; Crank shafts for moving machine; ] Transmission shafts, other than for land vehicles; Carburetors; Piston rings; Igniting devices for internal combustion engines of land vehicles; Starters for motors and engines; [ Joints as parts of engines for connecting sliding strips, plates and guides; Cylinder heads for engines; Pistons as parts of machines or engines; ] Engines for boats; Motors for boat...