Exhaust Valve

Help restore proper engine breathing and valvetrain performance with this replacement valve. Whether you're replacing a worn or damaged valve or completing a full engine rebuild, this essential component helps control the flow of air, fuel, and exhaust through the combustion chamber to keep your classic running properly. This valve fits 1963–1966 Pontiac Catalina, Bonneville, Star Chief and Grand Prix.

• Includes: 1 Valve
• Engine: 421 cid (6.9L) V8
• Valve Type: Exhaust
• Valve Specifications: Steel valve with two lock grooves and a head diameter of 1.656 in (42.062 mm).
• Fitment Notes: Exhaust application for the 421 cid (6.9L) V8; each engine uses 8.