Automobile engine valve covers; Automotive exhaust pipe; Bellows being parts of machines; Cooling radiators for motors and engines; Electric door opening and closing system; Electric generators; Fans for motors and engines; Ignition coils for automotive engines; Intake manifolds for internal combustion engines; Oil filters; Pistons for engines; Pressure switches and sensors for monitoring, controlling, and switching hydraulic or pneumatic systems sold as an integral component of injection mol...