Product Description
Interstate-McBee M-3929027 Crankshaft Gear – 89–02 5.9L Cummins
OEM-style front crankshaft timing gear engineered by Interstate-McBee for 1989–2002 Dodge Ram 2500/3500 5.9L Cummins applications (12-valve & 24-valve). Built for precise valve-train synchronization, quiet operation, and long service life.
- Direct-fit replacement: Matches OEM Cummins 3929027 form, fit & function.
- Durable steel construction: Precision-machined teeth for consistent timing and wear resistance.
- Aftermarket value: Interstate-McBee quality at substantial savings vs. OEM.
- Application-ready: Designed specifically for 5.9L B-Series (1989–2002) truck platforms.
Specifications
| Brand / Part No. | Interstate-McBee M-3929027 |
|---|---|
| OEM Cross-Reference | Cummins 3929027 |
| Additional Cross-Refs (common) | 3912883, 3919681 |
| Position | Front crankshaft timing gear |
| Tooth Count | 36 |
| Material | Hardened steel |
| Shipping Weight (approx.) | ~2.0 lb |
What’s Included
- (1) Crankshaft gear, M-3929027
Vehicle Fitment
Always verify by engine serial number (ESN) for edge-case builds.
- Dodge Ram 2500/3500 – 5.9L Cummins (B-Series)
- 1989–1993 12-Valve 6BT
- 1994–1998 12-Valve 6BT (P-pump)
- 1998.5–2002 24-Valve ISB
Install Notes
- Lock timing and mark references before removal; verify timing marks on reassembly.
- Inspect crank nose, keyway, and mating surfaces; replace front seal if worn.
- Follow the Cummins service manual for torque values and procedures.
Warranty
Interstate-McBee new engine components include manufacturer warranty coverage. For exact terms and eligibility, please contact us or refer to the current Interstate-McBee policy.
Why Buy From CPP Diesel
- ESN-verified fitment support from diesel techs
- Fast shipping, easy returns
- Deep B-Series catalog for complete timing/front-gear service
FAQ
Will this fit both 12V and 24V 5.9L Cummins?Yes—this gear is listed for 1989–2002 5.9L B-Series applications covering 12-valve and early 24-valve ISB engines.
How many teeth does the gear have?
36 teeth (front crankshaft gear).
Is the OEM cross-reference 3929027?
Correct. Interstate-McBee M-3929027 is an aftermarket replacement for Cummins 3929027.
What else should I replace while I’m in there?
Common add-ons include the front crank seal, timing cover gasket, and gear housing gasket. Inspect the keyway for wear.
Does this include the key/bolt?
No—this listing is for the gear only. Reuse or replace hardware per the Cummins manual.
Product Videos
Custom Field
YEAR 1989-2002
MAKE DODGE
ENGINE 5.9L
