The Cummins 3903924 is the genuine timing pin for 1989-1998 Dodge trucks with the 5.9L 12 valve Cummins. It sits in the timing pin housing on the front cover.

Pushed in while barring the engine, it drops into the hole in the cam gear to locate cylinder 1 top dead center for pump timing and valve lash work.

• Genuine Cummins: Factory timing pin.
• Locates TDC: Cylinder 1 reference.
• Pump And Lash Work: Common service tool.
• Fits 3919683: Timing pin housing.
• 12V Specific: 1989-1998 5.9L.

Technical Specifications

• Part Number: 3903924
• Manufacturer: Cummins
• Housing: 3919683
• O-Ring: 3913994

Vehicle Fitment & Technical Installation Notes

• Fitment: 1989-1998 Dodge 5.9L 12V Cummins.
• Installation Tip: Always pull the pin back out before cranking or starting the engine, or it will break.