ARP Header Bolt - 8 mm x 1.25 Thread - 1.181 in Long - 12 Point Head - Polished - GM LS-Series - Set of 12 Integra Racing Shocks and Springs Inlets and outlets are threaded

Inlets and outlets are threaded 1/2"NPT

Cylinder Head Specifications: Combustion chamber vol: 64cc

the American-made lightweight high travel springs have fewer coils and a smaller wire diameter

Optimized off-road calibration that works out-of-the-box

Chevrolet Del Ray Base 454 1958

ARP Header Bolt - 8 mm x 1.25 Thread - 1.181 in Long - 12 Point Head - Polished - GM LS-Series - Set of 12 Integra Racing Shocks and Springs Inlets and outlets are threadedARPs 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: Header Bolt 8 mm x 1. 25