Product Description
Interstate-McBee M-3802422 Piston Ring Set — .020" Over (0.50 mm) — 1989–2002 5.9L Cummins
Quality aftermarket piston ring set from Interstate-McBee for the 5.9L Cummins B-Series. Sized .020" over (0.50 mm) for engines using matching oversize pistons after machining/honing. Sold per cylinder (one piston).
- Correct oversize: .020" (0.50 mm) for properly bored/honed cylinders.
- Broad fitment: Works with 1989–1998 12-valve and 1998.5–2002 24-valve 5.9L Cummins when .020" pistons are used.
- Reliable seal: Designed to restore compression and oil control when rebuilding.
- Service friendly: Packaged for one piston; order six sets for a full engine.
What’s Included
- (1) Complete piston ring set for a single piston (compression and oil control rings)
Vehicle / Engine Fitment
Verify by engine serial number (ESN) and matching piston size.
- Dodge Ram 2500/3500 with 5.9L Cummins:
- 12-Valve: 1989–1998
- 24-Valve: 1998.5–2002
- Other B-Series 5.9L applications using .020" oversize pistons
Installation Notes
- Use with correctly bored and plateau-honed cylinders for .020" oversize pistons.
- Check ring end gap in the bore and adjust carefully to the service manual specification.
- Confirm ring orientation and groove cleanliness; do not mix rings between cylinders.
- Follow Cummins torque specs and break-in procedures after assembly.
Recommended/Related Parts
- Matching .020" oversize pistons (set of 6)
- Full engine gasket set / head gasket
- Main/rod bearings and thrust washers
- Hone stones, ring filer, assembly lube
FAQ
Is this a complete engine set?
No—this listing is per cylinder. Order a quantity of 6 for a complete 6-cylinder engine.
Will these fit standard-size pistons?
No. These are .020" (0.50 mm) oversize and must be used with .020" oversize pistons and a properly machined block.
Does this fit both 12-valve and 24-valve 5.9L?
Yes—so long as the engine uses .020" oversize pistons and ring specs match the build. Always verify by ESN.
Specifications for Interstate-McBee M-3802422
| Brand | Interstate-McBee |
| Part Number | M-3802422 |
| UPC | Not specified by manufacturer/seller |
| GTIN | Not specified by manufacturer/seller |
| Shipping Info | Package weight: Not specified (piston ring set for 5.9L Cummins). Other shipping dimensions/method: Not specified. |
| Cross Reference | Intended as an aftermarket replacement ring set for .020" oversize pistons on 1989–2002 5.9L Cummins engines. OEM-style reference: Cummins 3802422 (.020" oversize ring set). Additional detailed cross-reference numbers: Not specified. |
| E-Codes | Not specified |
| Prop 65 | WARNING: This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information: https://www.P65Warnings.ca.gov |
