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

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