2011-2023 Mustang GT/F150 5.0L Coyote Harmonic Balancer Stud Kit

Our harmonic balancer stud kits feature one of the world’s strongest alloys, AT280, providing unparalleled safety and fastener performance. Through a finite element analysis optimization, and some of the tightest fastener tolerances in the industry, we’ve come up with the last fastener you’ll ever need for your high-performance engine.

These studs feature:

Massive oversized 1-1/4 nut with full 1-1/2 inch flange to distribute the stud load

Rolled Threads

FEA designed necking and fastener stacks

280,000 PSI Ultimate Strength

250,000 PSI Yield Strength

Dual External Coating Technology combines 500+ hours of salt spray endurance in the threads with 3000+ hours on the rod.