Oregon Permatex 27100 High Strength Threadlocker Red, 6 ml, 2 Pack 2 Pack Value Pack Well-suited for permanently locking studs and press fits | Adds 3,000 PSI holding power on slip and press fit assemblies Replaces set screws and snap rings and also locks against vibration loosening May require heat or special tools for removal Suggested Applications: Cylinder block and rocker arm studs, ring gear bolts, frame bolts, shock absorber bolts