ARP 150-4069 Diesel Head Stud Kit

The ARP 150-4069 Diesel Head Stud Kit is a massive upgrade over the factory head bolts in your 1983-1987 Ford 6.9L IDI. The threads on these head studs are rolled after being heat-treated to provide the highest possible fatigue strength. These studs are manufactured in the USA at the ARP plant in Santa Paula, California. To ensure precise concentricity, these studs are they are centerless ground and broached at the ends to make installation easier. This feature also enables the removal of the cylinder head in small spaces. Each set of head studs comes with parallel-ground washers and heat-treated 12-point chrome-moly steel nuts. These studs are finished in a black oxide finish for increased durability.