Torque Spec For Flywheel Bolts On Isx Cummins 251 Updated Jun 2026

Never guess. When in doubt, download the latest Cummins Service Bulletin or consult Quickserve.Cummins.com with your specific ESN (Engine Serial Number). A stripped crank flange costs $8,000+ to repair. A $2 bolt done right costs nothing.

Causing severe vibration and potential damage to the crankshaft. torque spec for flywheel bolts on isx cummins 251 updated

: Typically 40–50 ft-lbs, tightened in a crisscross pattern. Bellhousing Bolts : Usually 70–90 ft-lbs. Never guess