Coated & Chamfered 6BT X-Series Piston Kit (.040)

Features:

• Fits 1998.5-2002 5.9L Cummins 24V engines
• .040 inch oversize matched piston set
• Chamfered tops help reduce cylinder scuffing
• Thermal barrier coated piston crowns
• Low friction anti scuff skirt coating
• Includes rings wrist pins and clips
• Features .015 inch reduced compression height
• Built for increased cylinder pressure
• Supports elevated boost applications
• Ideal for heavy towing builds
• Designed for performance diesel engines
• Drop in replacement for compatible rebuilds

Build A Cummins That Is Ready For Every Challenge

A properly built diesel engine deserves pistons that are designed to handle far more than everyday driving, and the Industrial Injection X-Series Coated and Chamfered .040 Piston Kit delivers exactly that. Designed for 1998.5-2002 5.9L Cummins 24V engines requiring a .040 inch overbore, this kit provides the durability needed for hardworking trucks that tow, haul, and put in serious miles. The thermal barrier coating helps manage combustion heat, allowing the pistons to perform with greater confidence under demanding operating conditions. Additionally, the low friction anti scuff skirt coating reduces wear while promoting smooth piston movement from startup to full operating temperature. Chamfered piston tops further improve durability by helping reduce cylinder wall scuffing during high load operation. Every kit includes matched pistons, rings, wrist pins, and clips, giving you everything needed to assemble the rotating assembly with confidence. If your rebuild is focused on long term reliability with performance upgrades in mind, this piston kit provides the quality foundation your Cummins deserves.

Advanced Piston Technology For High Demand Engine Builds

The Industrial Injection X-Series Coated and Chamfered .040 Piston Kit is engineered for 1998.5-2002 5.9L Cummins 24V 6BT engines that have been machined for a .040 inch oversize bore. Each matched piston is manufactured to maintain consistent dimensions across the full set, helping promote balanced engine operation and dependable performance after assembly. Furthermore, the thermal barrier coating on the piston crown helps reduce heat transfer into the piston, while the low friction anti scuff skirt coating minimizes contact with the cylinder wall during operation. The chamfered piston design helps reduce the likelihood of cylinder wall scuffing, making these pistons well suited for engines that experience elevated cylinder pressures and increased boost levels. A .015 inch reduced compression height provides additional clearance for more demanding engine combinations while supporting performance oriented diesel builds. Every kit includes matching rings, wrist pins, and retaining clips to simplify installation and ensure component compatibility. Before beginning assembly, verify the final bore dimensions, compression height requirements, and complete engine specifications to ensure this .040 inch oversize piston kit is the correct choice for your rebuild.

Fitment: 1998.5, 1999, 2000, 2001, 2002 Dodge RAM 2500/3500 4WD 5.9L Cummins 24V

Notes:

• Fits 1998.5-2002 5.9L Cummins 24V 6BT engines.
• This listing is for the .040 inch oversize version.
• Requires a .040 inch overbore engine block.
• Verify cylinder bore size before ordering.
• Features a .015 inch reduced compression height.
• Confirm compression height matches your engine build.
• Check piston to valve clearance before installation.
• Consult your engine builder for modified applications.
• Includes matched pistons, rings, wrist pins, and clips.
• Not the fly cut version with valve reliefs.