ARP SB Chevy Head Bolt Kit - 12 Point 20-OTL-NR-ML 5" or 5 on 4

5" or 5 on 4

Up to 200-300 MPH

1-Piece Block to 2-Piece Crank

Billet aluminum water necks fit most Chevy V8’s

1984-1996 Ford E-350 Econoline

ARP SB Chevy Head Bolt Kit - 12 Point 20-OTL-NR-ML 5" or 5 on 4ARPs product line contains thousands of part numbers, and has expanded to include virtually every fastener found in an engine and driveline. These range from quality high performance OEM replacement parts to exotic specialty hardware for Formula 1, IndyCar, IMSA, NASCAR and NHRA drag racing and marine applications. Since 1968, ARP is the fastener of champions and the world leader in fastener technology. Product Description: Cylinder Head Bolt Kit High