Product Description
Interstate-McBee M-3804990 Piston Ring Set – STD – 1998.5–2002 5.9L Cummins 24-Valve ISB
Quality aftermarket piston ring set engineered to OE specifications for the 5.9L Cummins 24-valve ISB (1998.5–2002). Ideal for stock rebuilds and refreshes where standard bore is retained. Sold as one ring pack for one piston.
- OE-style performance: Correct ring materials and profiles for reliable sealing and oil control.
- Standard size: For standard (STD) bores; no overbore required when the cylinder measures within spec.
- Ready to install: Individual ring pack per piston simplifies service; order the quantity your engine requires.
- Value: Interstate-McBee quality at a cost-effective price point.
Specifications
| Brand | Interstate-McBee |
| Part Number | M-3804990 |
| Size | Standard (STD) |
| Application | 5.9L Cummins ISB 24-valve (1998.5–2002) |
| Sold As | One ring set (one piston) |
| Engine Quantity | Order 6 sets for a complete 6-cyl engine |
What’s Included (per set)
- (1) Compression ring pack for a single piston (top, second, and oil control rings)
Vehicle Fitment
Always verify by engine serial number (ESN) when possible.
- Dodge Ram 2500/3500 with 5.9L Cummins ISB 24-valve
- Model Years: 1998.5–2002
Recommended/Related Parts
- Pistons (5.9L ISB)
- Connecting Rod Bearings
- Main Bearings
- Head Gasket / Top End Set
- Cylinder Hone & Tools
Install Notes
- Measure cylinder bore, taper, and out-of-round to confirm STD rings are appropriate.
- File-fit rings only if required; check ring end gaps in-bore and follow Cummins service specs.
- Stagger ring end gaps per service manual; verify ring orientation (dot or mark up if applicable).
- Light hone (proper grit) to achieve correct surface finish for new rings.
- Lubricate and use a ring compressor for installation; work clean to avoid scoring.
FAQ
Is this a full engine set?
No. This listing is for one piston (one cylinder). A complete engine requires six sets.
Do I need oversize rings?
Use STD rings only if the measured bore is within specification. If the block is overbored, select the matching oversize (e.g., +0.50 mm) instead of STD.
Will this fit a 12-valve (1989–1998)?
No. This part is listed for the 24-valve ISB (1998.5–2002). Verify by ESN for edge cases.
