Product Description
Interstate-McBee M-3934047 Piston (Wrist) Pin – 04.5–07 5.9L Cummins
OEM-size replacement piston/wrist pin engineered for late-2004 (04.5) through 2007 5.9L Cummins ISB common-rail engines. Built to factory dimensions for a precise press-fit in piston/rod assemblies. Sold individually; six (6) required per engine.
- Direct-fit, factory size: Matches OEM Cummins 3934047 dimensions for proper clearance and durability.
- Quality materials: Hardened, precision-ground pin for stable operation under diesel loads.
- Service-friendly: Compatible with OEM-style retaining clips (3920691, sold separately).
- Aftermarket value: Interstate-McBee reliability at a budget-friendly price point.
Specifications
| Manufacturer Part # | M-3934047 (Interstate-McBee) |
|---|---|
| OEM Cross-Reference | 3934047 (Cummins) |
| Engine | 5.9L Cummins ISB (24-valve, common rail) |
| Model Years | 2004.5–2007 |
| Position | Piston / wrist pin |
| Sold As | Individual pin |
| Qty Required Per Engine | 6 |
| Related Hardware | Wrist pin retaining clip 3920691 (sold separately) |
What’s Included
- (1) Interstate-McBee piston/wrist pin, part # M-3934047
Vehicle Fitment
Always verify by engine serial number (ESN) for exact applications.
- Dodge Ram 2500/3500 — 2004.5, 2005, 2006, 2007 with 5.9L Cummins ISB (24V common rail)
Install Notes
- Use new retaining clips (3920691) during reassembly; replace any worn pistons/rods as needed.
- Lubricate pin and bushings; verify clearances per Cummins service manual.
- Observe correct orientation and press-fit procedures to avoid bore damage.
Warranty
Interstate-McBee new engine components include manufacturer warranty coverage. Contact us for exact terms and assistance with ESN validation before purchase.
Why Buy From CPP Diesel
- ESN-verified fitment support from real diesel techs.
- Fast shipping options and hassle-free returns.
- Deep 5.9L Cummins parts selection for complete overhauls.
FAQ
Will M-3934047 fit my 2003 or early-2004 5.9L?No. This pin is listed for 2004.5–2007 ISB common-rail engines. Earlier 5.9L years typically use a different pin (e.g., M-3934048).
How many pins do I need for a full engine?
Six (6) — one per cylinder. Pins are sold individually.
Are the retaining clips included?
Retaining clips are sold separately. The common OEM clip is 3920691; Interstate-McBee and Cummins versions are available.
Is this an oversize pin?
No. It’s factory size (standard). If your pistons/rods are worn or aftermarket, verify sizes before ordering.
What’s the OEM cross-reference?
Cummins 3934047 is the direct OEM reference for this Interstate-McBee pin.
Product Videos
Custom Field
YEAR 2004.5-2007
MAKE DODGE
ENGINE 5.9L
