Product Description
Interstate-McBee M-3934047 Piston Pin – 2004.5–2007 5.9L Cummins (Aftermarket Replacement)
Precision wrist pin (gudgeon pin) for the 2004.5–2007 5.9L Cummins ISB 24-valve (common-rail). Manufactured to OE-equivalent tolerances for reliable piston/rod articulation and long service life. Sold individually.
- Direct replacement: Matches OE form, fit, and function for ISB 5.9 common-rail engines.
- Durable construction: Hardened steel pin designed to handle stock and work-truck duty cycles.
- Service ready: Ideal for in-chassis refreshes and full engine overhauls.
- Value: Interstate-McBee quality at a cost-effective price point.
Specifications
| Brand | Interstate-McBee |
| Part Number | M-3934047 |
| OEM Reference | Cummins 3934047 |
| Component | Piston Pin (Wrist Pin) |
| Sold As | Each (1 pin) |
| Qty Required | 6 pins (one per piston) |
| Engine | 5.9L Cummins ISB 24-Valve (Common-Rail) |
| Model Years | 2004.5–2007 |
What’s Included
- (1) Piston pin, P/N M-3934047
Vehicle/Engine Fitment
Always verify by Engine Serial Number (ESN) when possible.
- Dodge Ram 2500/3500 with 5.9L Cummins ISB (24-valve, common-rail)
- Model Years: 2004.5–2007 (commonly referred to as 2004.5, 2005, 2006, 2007 5.9L CR)
Recommended/Related Parts
- Pistons & ring sets (match to compression ratio and oversize if applicable)
- Piston pin bushings (connecting rod small-end)
- Full gasket set or upper set for in-chassis service
- Engine assembly lube
Install Notes
- Confirm pin fit with the piston and rod; check interference/clearance per the Cummins service manual.
- Use clean engine oil or assembly lube during installation.
- Service one cylinder at a time; keep components matched to their original bores unless performing a full overhaul.
- Observe orientation marks on pistons/rods; verify circlip/retainer seating where applicable.
Why Buy From CPP Diesel
- Diesel specialists with ESN-verified fitment support
- Fast shipping and easy returns
- Wide inventory of Cummins ISB components to finish the job
FAQ
Is this pin for common-rail 5.9L engines only?
Yes. This listing targets the 2004.5–2007 common-rail 5.9L Cummins. Verify by ESN to be sure.
How many do I need?
Six pins per engine—one per piston. Pins are sold individually.
Does this include pistons or clips?
No. This is the piston pin only. Order pistons, clips/retainers, and bushings separately.
