Interstate-McBee M-3800781 Piston Kit (Standard) – 98.5–02 5.9L Cummins Standard Output

OEM-style standard bore piston kit engineered for the 1998.5–2002 5.9L Cummins 24-Valve (Standard Output). Designed for stock rebuilds with precise fit, durable ring pack sealing, and reliable daily-duty performance.

• Direct-fit, standard bore (STD): Matches OE spec for 24V ISB SO applications.
• Complete kit per cylinder: Piston, ring set, wrist pin, and circlips.
• Sold individually: Order six (6) kits for a full engine set.
• Aftermarket value: Interstate-McBee quality at a fraction of OEM pricing.

Specifications

Vehicle Fitment

Always verify with your engine serial number (ESN) for exact fit.

• Dodge Ram 2500/3500 – 5.9L Cummins 24-Valve (ISB), Standard Output:
  • 1998.5, 1999, 2000, 2001, 2002 (SO applications)
• Not typically for High Output (HO 245HP/NV5600) unless ESN verification confirms the same piston spec.

Installation Notes

• Measure cylinder bore, taper, and out-of-round; hone as required and set ring end gaps to spec.
• Confirm piston-to-wall clearances and orientation (markings toward front).
• Lubricate pins/rings during assembly; follow Cummins torque specs and sequences.
• Break-in with conventional oil per builder guidelines; monitor blow-by and oil consumption.

Warranty

Interstate-McBee new engine components carry manufacturer warranty coverage. For exact terms on piston kits, please contact us with your ESN and order details.

Why Buy From CPP Diesel

• ESN-verified fitment help from real diesel techs.
• Fast shipping, easy returns, and competitive pricing.
• Deep inventory of 5.9L Cummins rebuild components for one-stop checkout.

FAQ