1991-1998 5.9L Cummins 12V 6BT X-Series Piston Kit1991 1998 5. 9L Cummins 12V 6BT X Series Piston Kit Industrial Injection X Series Piston Kits are built for 1991 1998 5. 9L Cummins 12V 6BT engine rebuilds, towing applications, and performance diesel builds. Each kit is designed as a drop in replacement matched piston set and is available in multiple bore sizes to match your engine build. Choose from Stock Replacement, Coated & Chamfered, or Fly Cut, Coated & Chamfered piston options depending on

For enthusiasts seeking extreme horsepower with faster spool and greater efficiency

1480200053

F00E200255

that eliminates the need to send everything back for a core credit

Whether you're building a drag truck

helping maintain proper fuel system sealing and dependable engine performance

Increase your engine’s RPM capability and unlock more top-end performance with 4K Governor Springs for the Bosch P7100 injection pump

Industrial Injection – The Leaders in Diesel Performance

The H&S Motorsports Intercooler Pipe Upgrade Kit is a direct OEM replacement that installs easily and eliminates failure-prone components

191 delivery valves

Billet S480 compressor wheel for peak efficiency

720523-5005S