Peak Diesel Performance

4000 RPM Governor Spring Kit with 12 Heavy Duty Valve 60lb Springs The Peak Diesel Governor Spring Kit is a special combination of Bosch springs and Piers' unique design on seats. This kit allows your engine to have full fueling to approximately 4000RPM, which greatly improves the driving experie..

4000 RPM Governor Spring Kit (4K GSK)The Peak Diesel Governor Spring Kit is a special combination of springs and Piers' unique design on seats.This kit allows your engine to have full fueling to approximately 4000RPM, which greatly improves the driving experience of a stock truck, for trucks with in..

2 Inner Springs to Convert 3k gsk to a 4k gsk.94-98 Dodge 12 Valve Cummins Only designed to work with Peak Diesel Performance 3K governor spring kits. ..

Tired of spots on your driveway, oil on your radiator, an oily mess in your engine compartment? Give the Cummins Breather Kit a try! Works on all Cummins Engines and Dodge Cummins 5.9L 1988 - 2002. Complete kit with everything you need to install.  Installs in under 1/2 hour. Bottle D..

  Low stock. We also carry a BD Diesel alternative. See part number 1040181   The AFC Spring Kit allows you to achieve a good compromise of minimal smoke under acceleration with responsiveness. Kit Includes- Medium and light AFC springs for the P7100 pump, Allen screws, Allen wre..