Product Description
Interstate-McBee M-4089258 Piston Ring Set — Standard Bore — 2004.5–2007 5.9L Cummins (ISB 24-Valve, Common Rail)
Quality aftermarket piston ring set engineered to OE form, fit, and function for the 2004.5–2007 Dodge Ram 2500/3500 with the 5.9L Cummins ISB common-rail diesel. Ideal for stock rebuilds and refreshes where standard (STD) bore is retained.
- OE-style performance: Sealing characteristics comparable to factory rings.
- Standard bore: For cylinders that remain at factory diameter (no overbore).
- Durable materials: Designed for long service life under diesel operating conditions.
- Ready for rebuilds: Complements stock pistons and honing procedures.
Specifications
| Brand | Interstate-McBee |
| Part Number | M-4089258 |
| Bore Size | Standard (STD) |
| Engine | 5.9L Cummins ISB (24-Valve, Common Rail) |
| Model Years | 2004.5–2007 |
| Sold As | Set for one piston (1 cylinder) |
| Qty Required for Engine | 6 sets (one per piston) |
What’s Included
- (1) Complete piston ring set for one piston (compression and oil rings)
Vehicle Fitment
Always verify by engine serial number (ESN) when possible.
- Dodge Ram 2500/3500 — 5.9L Cummins ISB, common rail (24-valve)
- Model Years: 2004.5–2007 (mid-year 2004.5 changeover)
Recommended/Related Parts
- Piston(s) — STD bore (match to rings)
- Head gasket and top-end set
- Main and rod bearings
- Ring compressor tool
- Hone/brush and cleaning supplies
Install Notes
- Confirm cylinder bore is within specification for STD rings; hone as required and verify finish.
- Measure and file end-gap as needed; stagger ring gaps per service manual.
- Check ring orientation (top/bottom) and oil ring expander instructions.
- Lubricate appropriately and use a quality ring compressor during installation.
FAQ
Is this a standard bore ring set?
Yes. This listing is for standard (STD) bore cylinders. If your block is overbored, use the matching oversize ring set.
How many sets do I need?
These are sold per cylinder. Order 6 sets for a complete engine.
Does this fit earlier 2004 trucks?
It fits the mid-year 2004.5–2007 common-rail 5.9L. For early-2004 or VP44-equipped engines, verify by ESN before ordering.
