Torsional Vibration Damper (TVD) for the Paccar MX13.
A new Damper will prolong your engine life by eliminating harmful torsional crankshaft vibration. OEM manufacturers recommend replacing the damper at 500,000 miles. Failure to replace a worn damper could result in a damaged crankshaft and other serious engine failures. Keep your truck out of the shop with a new, OEM, torsional damper.