Brand: Airflow Research (AFR) Manufacturer's Part Number: 7233-1 Part Type: Valves Product Line: AFR Inconel Valves Automotive Fittings Part Number: AFR-7233-1 Valve Position: Exhaust Exhaust Valve Head Diameter (in.): 1.600 in. Exhaust Valve Head Diameter (mm): 40.640mm Exhaust Valve Stem Diameter (in.): 0.314 in. Exhaust Valve Stem Diameter (mm): 8.00mm Exhaust Overall Valve Length (in.): 4.900 in. Exhaust Overall Valve Length (mm): 124.460mm Undercut Stem: No Swirl-Polished: No Valve Material: Inconel Lock Groove Quantity: 1-groove Lock Groove Style: Beadlock Quantity: Sold individually. Notes: For use with AFR Mongoose LS1 cylinder heads. Description: AFR Inconel valves provide your cylinder head with the proper flow needed to keep your engine running efficiently. Inconel alloys are oxidation/corrosion-resistant materials well suited for service in extreme environments subjected to pressure and heat. Order the AFR Inconel valves designed to fit your application.