Product Description
Interstate-McBee M-3802487 Engine Piston Kit (STD) – 1994–1998 5.9L Cummins 12-Valve
Restore factory compression and durability with this OEM-style standard-bore piston kit for 1994–1998 Dodge Ram 2500/3500 5.9L Cummins 12-valve (B-Series). Built to exacting tolerances for reliable sealing and long service life in stock or work-truck builds.
- Direct application: Designed for non-certified 5.9L B-Series engines (12V, 1994–1998 model years).
- OEM-style performance: Stock bowl geometry for factory driveability and emissions characteristics.
- Precision manufacturing: Consistent weight and skirt profile for smooth operation.
- Aftermarket value: Interstate-McBee quality at a fraction of OEM boxed pricing.
Specifications
| Interstate-McBee Part # | M-3802487 |
|---|---|
| OEM Cross-Reference | Cummins 3802487 (Engine Piston Kit) |
| Bore Size | Standard (STD) |
| Bowl Style | Stock/OE-style |
| Engine Family | Cummins 5.9L B-Series, 12-valve |
| Sold | Per cylinder (use 6 kits per engine) |
What's Included
- (1) Piston
- (1) Wrist pin (with retainers, where applicable)
- Note: Ring sets are typically sold separately for McBee piston kits—pair with M-3802421 (STD) or oversize equivalents as required.
Vehicle Fitment
Always verify by Engine Serial Number (ESN) if possible.
- Dodge Ram 2500/3500, 5.9L Cummins 12-Valve
- Model years: 1994–1998
Installation Notes
- Measure cylinders; hone or machine as needed to meet service-manual specs.
- Check ring end gap and orientation; confirm piston-to-wall clearance.
- Follow Cummins torque sequences and lubrication procedures during assembly.
Recommended Add-Ons
- Ring Set (STD): M-3802421 | Oversizes: M-3802422 (.020), M-3802423 (.040)
- Piston Pin: M-3934048 (if not included in your kit packaging)
- Piston Cooling Nozzle: M-3937214 (as needed)
Why Buy From CPP Diesel
- Diesel-specialist fitment support for B-Series 5.9L
- Fast shipping & easy returns
- ESN-verified recommendations for rings and bearings
FAQ
Does this kit include piston rings?Interstate-McBee commonly packages this as a piston with wrist pin; ring sets are typically sold separately. Pair with M-3802421 (STD) or the correct oversize as required.
How many kits do I need?
One kit per cylinder—order six (6) for a complete 5.9L engine.
What engines does M-3802487 fit?
5.9L Cummins B-Series 12-valve applications in 1994–1998 Dodge Ram 2500/3500 (verify by ESN).
Is this a stock bowl piston?
Yes—M-3802487 is a stock/OE bowl design intended for factory-style operation on 12-valve applications.
