Engine bearings; Engine cylinders for vehicles; Exhaust system temperature, pressure, flow sensors being parts of internal combustion engines; Gaskets for internal combustion engines; Mechanical seals in the nature of sealing joints for vehicle engines; Oil pumps for use in motors and engines; Piston rings; Pistons for engines; Valves being engine parts for introducing fuel-air mixtures into the combustion chambers of internal combustion engines; Water pumps for use in motors and engines