ARP 642-4500 SAE Bolt Kit 3/8-16 x 4.500 12pt black oxide bolts ymm_21 F85 1965-1966

F85 1965-1966

Fits Following Engines: 307 CID Chevrolet Small Block Generation I

The valve body features include 1/8” NPT ports with included push-to-lock ¼” hose fittings for easy connection and EPDM seals that stand up to corrosion for years of reliable use

Made from 8740 chrome moly steel

Fitment notice: With Akrapovič diffuser

ARP 642-4500 SAE Bolt Kit 3/8-16 x 4.500 12pt black oxide bolts ymm_21 F85 1965-1966Specifications Socket Size(s) 3 8 12pt UHL 4. 500 Thread Length 1. 000 Grip Length 3. 500 Thread Diameter Pitch 3 8 16 Grip Diameter 3 8 Wrenching (reduced) 3 8 Head Height (reduced) 0. 300 Collar Diameter (reduced) 0. 620