1989-2007 Cummins 5.9L X-Series Piston Ring Kit (24Q101)

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Industrial Injection X-Series Piston Ring Kits upgrade your 1989-2007 Cummins 5.9L rebuild with premium piston rings engineered for superior sealing, durability, oil control, and long-lasting performance in both stock and high-horsepower diesel applications. Each kit is precision manufactured for consistent compression, reduced blow-by, and improved combustion efficiency, and is available in Standard, .020", and .040" oversized options.

Built to withstand extreme cylinder pressures, elevated combustion temperatures, and demanding towing or performance conditions, X-Series Ring Kits deliver the durability and sealing performance your engine demands, from reliable daily drivers to high-horsepower competition builds.

• Precision-engineered piston ring kit for diesel performance applications
• Consistent compression and reduced blow-by
• Improved combustion efficiency
• Reduced friction and cylinder wall wear
• Enhanced oil control
• Built for high boost and high cylinder pressure environments

• Be sure to select the correct bore size to match your application.
• Oversized rings require the block to be bored and honed to the matching size.
• This kit ships with Industrial Injection's standard (non-PVD) ring pack. A PVD-coated version for the 5.9L Cummins is coming soon.