Description
Engine fasteners are the foundation of reliability—cheap bolts fail under heat and vibration, but Feuling’s external primary kit delivers the tensile strength and precision threading you need to keep your Twin Cam running strong. Built to ARP® specifications with 8740 chrome moly steel rated at 170,000 psi, these fasteners outperform both OEM and Grade 8 bolts. The wide underhead flange distributes load evenly across sealing surfaces, eliminating leaks and ensuring consistent torque hold through countless heat cycles.
- 12-point 8740 chrome moly bolts
- 170,000 psi tensile strength
- Black oxide finish
- Precision rolled threads
- Wide underhead flange design
- Prevents galling and loosening
- Even load distribution
- Includes moly assembly lubricant
- ARP® manufactured
- Twin Cam compatible
- Made in the U.S.A.
