Quality 12-point, heat-treated 8740 chromoly steel bolts with black oxide finish manufactured by ARP® to Feuling's exact specificationsWide, underhead flange design provides even load distribution for optimum sealing of surfaces to prevent leaksPrecision-rolled threads provide optimum engagement, prevent galling and promote consistent torque loadingTensile strength rated at 170,000 psi superior and stronger than OEM and stronger than grade 8 fastenersIncludes moly assembly lubricant for installationOptional kit for Feuling camplates/oil pumps onlyMade in the USA