Interstate-McBee M-3904849 P7100 Timing Pin Retainer Ring – 94–98 5.9L Cummins 12V

The Interstate-McBee M-3904849 is the OEM-style timing pin retainer ring (star retainer) that secures the engine timing pin in the timing cover/gearcase on 1994–1998 5.9L Cummins 12-valve (P7100) applications. Built to OEM dimensions for reliable retention and long service life.

• Direct-fit replacement: Matches Cummins 3904849 for proper fit and function.
• Durable construction: Maintains spring tension to keep the timing pin locked in the housing.
• Aftermarket value: Interstate-McBee quality at a fraction of OEM boxed pricing.
• Quick refresh item: Ideal to replace any time the timing pin or housing is serviced.

Specifications

Vehicle Fitment

Always verify by engine serial number (ESN) when possible.

• Dodge Ram 2500/3500, 5.9L Cummins 12-Valve (P7100)
  • Model Years: 1994, 1995, 1996, 1997, 1998
• Additional Notes: This retainer is commonly used across B-Series gearcases. Some earlier 1989–1993 12V applications also use 3904849; verify by ESN/build.

Related Service Parts

• Timing Pin – Interstate-McBee M-3903924
• Timing Pin O-Ring – Interstate-McBee M-3913994
• P7100 Timing Case O-Ring – Interstate-McBee M-3969698

Install Tips

• Inspect timing pin and housing for wear; replace O-ring(s) as needed.
• Confirm pin moves freely and snaps positively after retainer installation.
• Follow Cummins service procedures; do not over-deform the retainer during install.

Warranty

New Interstate-McBee engine parts are covered by manufacturer warranty; typical coverage is up to 24 months for new engine parts under normal use. Check the current Interstate-McBee policy for details.

FAQ