Product Description
Interstate-McBee M-3904849 – P7100 Timing Pin Retainer Ring (1994–1998 5.9L Cummins 12-Valve)
OE-style retainer ring for the Bosch P7100 timing pin on the 1994–1998 Dodge Ram 2500/3500 with the 5.9L Cummins 12-valve (6BT). Built to OE form, fit, and function to secure the timing pin assembly at the front cover. Sold individually.
- Direct replacement: Matches OE geometry for reliable pin retention.
- Correct application: For P7100-equipped 12-valve engines only (1994–1998).
- Service friendly: Ideal when refreshing timing components or repairing front cover leaks.
What’s Included
- (1) Retainer ring, P/N M-3904849
Vehicle Fitment
Always verify by engine serial number (ESN) when possible.
- Dodge Ram 2500/3500 5.9L Cummins (12-valve 6BT with Bosch P7100)
- Model Years: 1994–1998
- Does not fit 24-valve (1998.5–2002) VP44-equipped engines.
Recommended/Related Parts
- P7100 timing pin (sold separately)
- Timing pin seal / O-ring
- Front cover gasket set
- Timing case hardware kit (as needed)
Install Notes
- Clean mating surfaces and inspect the timing pin and bore for wear.
- Install the retainer ring flat and square; do not over-stretch or deform.
- Confirm smooth timing pin engagement after installation.
- Follow Cummins service procedures and torque guidance.
Why Buy From CPP Diesel
- ESN-verified fitment support from diesel specialists
- Fast shipping and easy returns
- Deep inventory of complementary 6BT timing and front cover parts
FAQ
Does this include the timing pin?
No. This listing is for the retainer ring only. The timing pin and seal are sold separately.
Will it fit my 1998.5–2002 24-valve?
No. This part is for 12-valve engines (1994–1998) with the Bosch P7100 pump.
How many do I need?
One retainer ring per timing pin assembly.
Specifications for Interstate-McBee M-3904849
| Brand | Interstate-McBee |
| Part Number | M-3904849 |
| UPC | Not specified by manufacturer/seller |
| GTIN | Not specified by manufacturer/seller |
| Shipping Info | Package weight: Not specified. Package dimensions/method: Not specified (small ring, ships via standard ground). |
| Cross Reference | Direct aftermarket replacement for Cummins timing pin retainer ring P/N 3904849 used on P7100-equipped 5.9L Cummins (1994–1998). |
| E-Codes | Not specified |
| Prop 65 | WARNING: This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information: https://www.P65Warnings.ca.gov |
