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

Features:

• Fits 2003-2004 5.9L Cummins ISB engines
• .040 inch oversize piston configuration
• Coated and chamfered piston design
• Drop-in matched piston set
• Includes rings, wrist pins, and clips
• Thermal barrier piston top coating
• Low friction anti-scuff skirt coating
• Chamfered tops help reduce cylinder scuffing
• .015 inch reduced compression height
• Built for increased cylinder pressure
• Supports elevated boost and heavy towing
• Replaces previous PDM-3672CC.040 piston kit

Build A Stronger Foundation For Your Oversize Cummins

When your engine has been machined .040 inch over, it deserves pistons that are built to match the effort you've invested in the rebuild. The Industrial Injection X-Series Coated and Chamfered .040 Piston Kit is designed for 2003-2004 5.9L Cummins owners who want more than a basic replacement component. A thermal barrier coating helps manage combustion heat, while the low friction anti scuff skirt coating is engineered to reduce wear and promote smooth operation through countless miles of driving. The chamfered piston tops also help reduce cylinder wall scuffing, making these pistons an excellent choice for trucks that regularly tow, haul, or operate under increased boost. Every matched piston set includes rings, wrist pins, and clips, giving you the core components needed to move your rebuild forward with confidence. Additionally, the reduced compression height makes this kit well suited for more demanding diesel combinations that require greater durability than a standard piston can provide. If your goal is a dependable .040 inch oversize rebuild with proven performance upgrades, this Industrial Injection piston kit is built to deliver lasting results.

Engineered To Support High Load Diesel Applications

The Industrial Injection 244122 ISB X-Series Coated and Chamfered Piston Kit is manufactured specifically for 2003-2004 Dodge Ram 2500 and 3500 models equipped with the 5.9L Cummins 24 valve ISB engine that has been machined for a .040 inch oversize bore. This matched piston set installs as a direct drop in replacement while incorporating several design enhancements intended for higher demand diesel applications. Each piston features a thermal barrier coating on the crown that helps control combustion temperatures, while the low friction anti scuff skirt coating is designed to reduce friction between the piston and cylinder wall during engine operation. Furthermore, the chamfered piston tops help reduce cylinder wall scuffing, contributing to improved durability under elevated cylinder pressures and sustained heavy loads. The .015 inch reduced compression height makes these pistons well suited for engines operating with increased boost levels and performance oriented tuning. Every kit includes matching piston rings, wrist pins, and retaining clips to simplify installation and ensure proper component compatibility throughout the rebuild. For builders looking to combine a .040 inch oversize engine restoration with proven thermal protection and long term durability, this X-Series piston kit provides the precision and reliability expected from Industrial Injection.

Fitment: 2003, 2004 Dodge RAM 2500/3500 4WD 5.9L Cummins 24V

Notes:

• Designed for 2003-2004 5.9L Cummins 24V ISB engines.
• This kit uses .040 inch oversize pistons.
• The engine block must be machined for .040 inch pistons.
• Verify cylinder bore size before ordering.
• Compression height is reduced by .015 inch.
• Confirm compression height compatibility before installation.
• Check piston to valve clearance on modified engines.
• Recommended for elevated boost and cylinder pressure.
• Suitable for heavy towing and performance builds.
• Includes pistons rings wrist pins and clips.
• Consult your engine builder for modified applications.
• Supersedes previous PDM-3672CC.040 part number.