ARP Ford Boss 302 4-Bolt w/ Windage Tray Main Stud Kit (154-5602) Bonnet Release This coils suits LS1 &

This coils suits LS1 & LS6 series engines

Part Number: AF578-10DS

Nitronic stainless steel is used for the valve seat

45 Degree Vertical (UP) Pipe

ARP Ford Boss 302 4-Bolt w/ Windage Tray Main Stud Kit (154-5602) Bonnet Release This coils suits LS1 &ARP Ford Boss 302 4 bolt w windage tray main stud kit (154 5602) ARP Main Stud Kits 154 5602 ARP main stud kits help eliminate main cap walk fretting and protect the threads in your engine block. They include studs made from 8740 chromoly steel and heat treated in house to 190,000 psi tensile strength rating. The precision J form threads are rolled after heat treat for much stronger threads than the competition. Kits come complete with hardened