Product Description
Interstate-McBee M-4089669 Piston Kit — STD Bore — 2004.5–2007 5.9L Cummins (Aftermarket Replacement)
Quality aftermarket piston kit designed for the 2004.5–2007 Dodge Ram 2500/3500 with the 5.9L Cummins ISB common-rail (24-valve). Built to OE form, fit, and function to restore compression and reliability. Standard bore size. Sold individually (one cylinder).
- Direct replacement: OE-equivalent dimensions for proper fitment and ring seal.
- Complete kit: Includes piston, ring set, wrist pin, and pin retainers for one cylinder.
- Service-grade materials: Built for durability under towing and daily use.
- Value: Interstate-McBee quality without the OEM price tag.
Specifications
| Brand | Interstate-McBee |
| Part Number | M-4089669 |
| Bore Size | Standard (STD) |
| Configuration | 5.9L Cummins ISB (24-valve common-rail) |
| Sold As | Each (kit for one cylinder) |
| Quantity Required | 6 kits per engine |
| Position | Piston/rings/pin assembly |
What's Included
- (1) Piston — STD bore
- (1) Piston ring set
- (1) Wrist pin
- (2) Pin retainers/clips
Vehicle Fitment
Always verify with your engine serial number (ESN) for exact compatibility.
- Dodge Ram 2500/3500 5.9L Cummins ISB (common-rail), 2004.5–2007 model years
Recommended/Related Parts
- Main bearing set & rod bearing set (size to match crank/rods)
- Head gasket set & upper engine gasket kit
- Oil pump and pickup tube gasket
- Piston cooling nozzles (inspect/replace as needed)
- Timing cover & front/rear main seals
Install Notes
- Measure cylinder bores; hone or machine as required. Replace only with the correct size (STD/oversize).
- Check ring end-gaps in the cylinder and orient rings per manufacturer instructions.
- Verify piston protrusion, deck surface, and cleanliness before reassembly.
- Torque all fasteners to specification using calibrated tools; follow the Cummins service manual.
Why Buy From CPP Diesel
- ESN-verified fitment assistance from diesel specialists
- Fast shipping and hassle-free returns
- Deep inventory of complementary ISB components
FAQ
Does this kit include rings?
Yes. Each kit includes a matched ring set, wrist pin, and pin retainers for one cylinder.
How many kits do I need?
Six kits are required to service all cylinders on the 5.9L Cummins.
Is this the correct kit for 2003–2004 early trucks?
This listing is for 2004.5–2007 common-rail applications. If your truck is 2003–early 2004, verify the ESN and piston type before ordering.
