6x Exhaust Valve for PORSCHE 964 3.6 Carrera TRW The Original from TRW Description: Components in the valve train are subject to high stresses at fluctuating temperatures. Controlled by the camshaft, the valves are actuated via the rocker arms.Clattering/knocking noises, especially when the engine is cold, indicate worn components in the valve train or incorrectly adjusted valve clearance.During an engine overhaul or maintenance, worn or damaged components must be replaced immediately to prevent consequential damage.In addition to intake and exhaust valves for various Porsche models, we offer many other engine parts and spare parts. About the Brand: The American company TRW was founded in 1901 and is now a brand of ZF Friedrichshafen AG. TRW is one of the world's leading manufacturers of disc brake systems, electrically assisted steering systems, and seat belts. TRW maintains more than 20 technical centers and has 13 test tracks where the very high reliability of the braking systems is tested. Additional Information: ● Length: 109 mm ● Valve Head Diameter: 42.5 mm ● Valve Stem Diameter: 9 mm ● Valve Seat Angle: 45° ● Valve Head Material: Bimetal ● Valve Stem: Chrome-plated ● Valve Stem End: Hardened Reference Numbers: 964.105.419.03 964.105.419.00 964.105.419.04 Scope of Delivery: As shown in the illustration Suitable for: 964 CarreraShow moreShow less