Fastener Kit – External Engine – 12-Point – XL

Features precision-rolled threads for optimum engagement, to prevent galling and promote more consistent torque loading; Wide underhead flange design provides even load distribution for optimum sealing of surfaces – preventing leaks; Tensile strength rated @ 170,000 psi; superior and stronger than OEM and stronger than grade 8 fasteners; Manufactured by ARP® to Feuling’s® exact specifications; Includes moly assembly lubricant for installation; Quality 12-point heat-treated stainless steel; Made in the USA; Not for ’23 models with 121″ VVT motors.