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

Features:

• Fits 1998.5-2002 5.9L Cummins 24V engines
• .040 inch oversize matched piston set
• .100 inch fly cut valve reliefs
• Provides added piston to valve clearance
• Supports higher lift camshaft applications
• Thermal barrier coated piston tops
• Chamfered tops help reduce cylinder scuffing
• Low friction anti scuff skirt coating
• Features .015 inch reduced compression height
• Includes rings wrist pins and clips
• Built for high performance diesel engines
• Supports elevated boost and cylinder pressure

Give Your High Performance Rebuild Every Advantage

When you are building a Cummins that is expected to handle serious power, the right pistons become one of the most important decisions you can make. The Industrial Injection X-Series Fly Cut Coated and Chamfered .040 Piston Kit is engineered for 1998.5-2002 5.9L Cummins 24V engines that have been machined for a .040 inch overbore, giving performance minded builders the strength and clearance they need. The .100 inch fly cut valve reliefs provide additional piston to valve clearance, making this kit an excellent choice for engines equipped with higher lift camshafts and upgraded valvetrain components. Additionally, the thermal barrier coating helps manage piston temperatures under heavy loads, while the low friction anti scuff skirt coating promotes smoother operation and reduced wear over time. Chamfered piston tops further improve durability by helping reduce cylinder wall scuffing during demanding engine operation. Every kit includes matched pistons, rings, wrist pins, and clips, allowing you to assemble your engine with components designed to work together from the start. Whether your truck spends its time on the street, at the track, or pulling heavy loads, this piston kit is built to support the performance your Cummins is capable of delivering

Precision Machined For Demanding Engine Combinations

The Industrial Injection X-Series Fly Cut Coated and Chamfered .040 Piston Kit is designed for 1998.5-2002 5.9L Cummins 24V 6BT engines that require a .040 inch oversize piston after machining. Each matched piston is manufactured to provide consistent dimensions across the complete set, helping maintain balanced engine operation and dependable performance. Furthermore, the thermal barrier coated piston crowns help reduce heat transfer into the piston, while the anti scuff skirt coating minimizes friction between the piston and cylinder wall throughout the engine's operating range. Chamfered piston tops help reduce cylinder wall scuffing, and the .015 inch reduced compression height provides additional clearance for higher cylinder pressures and elevated boost applications. Integrated .100 inch fly cut valve reliefs create the piston to valve clearance needed for higher lift camshafts and more aggressive valvetrain configurations. The kit includes matching rings, wrist pins, and retaining clips to simplify assembly and ensure compatibility between components. Before installation, verify that your engine has been machined for a .040 inch overbore and confirm all compression height and clearance requirements to ensure this piston kit matches your specific build.

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 an engine block machined .040 inch oversize.
• Verify final cylinder bore size before ordering.
• Features .100 inch fly cut valve reliefs.
• Confirm piston to valve clearance before assembly.
• Uses a .015 inch reduced compression height.
• Verify compatibility with your camshaft and valvetrain.
• Consult your engine builder for modified applications.
• Includes matched pistons, rings, wrist pins, and clips.