Cummins 3967014 Viscous Vibration Damper

The Cummins 3967014 is a viscous vibration damper engineered for Tier 3 8.9 liter ISC and ISL engines, also compatible with QSL9 and L9 platforms. It utilizes a fluid-filled inertia ring to absorb torsional vibrations generated by the crankshaft during combustion cycles, preventing fatigue failure and reducing gear train wear. This assembly serves as a direct OEM replacement for part numbers 3941092, 4947618, and 5262890. It is constructed to meet original equipment specifications for fit, function, and durability in on-highway trucks, construction machinery, and marine installations. Verification of engine serial number (ESN) is recommended prior to installation to ensure correct application match.