MDC Diesel 4k 4000RPM Governor Spring kit (4K GSK) for Cummins P7100 PUMP

MDC Diesel 4000 RPM Governor Spring Kit (4K GSK) for 1994-1998 5.9L 12V Cummins

Unlock the full performance potential of your P7100-equipped 12-valve Cummins with the MDC Diesel 4000 RPM Governor Spring Kit. Designed specifically for 1994-1998 Dodge Ram 5.9L Cummins engines, this premium governor spring kit allows your engine to safely and smoothly rev to 4,000 RPM, eliminating the factory fuel cut-off limitations that hold back horsepower and drivability.

Whether you’re building a street truck, towing rig, drag truck, pulling truck, or performance daily driver, the MDC Diesel 4K Governor Spring Kit delivers increased RPM range, improved throttle response, and a wider usable powerband. By allowing the P7100 injection pump to continue fueling beyond the stock governor limits, you’ll maximize the performance of upgraded injectors, turbochargers, and fueling modifications.

Features

• Raises engine RPM capability to approximately 4,000 RPM
• Compatible with all 1994-1998 5.9L 12V Cummins engines equipped with a P7100 injection pump
• Improves top-end power and throttle response
• Eliminates factory fuel cut-off limitations
• Ideal for performance, towing, racing, and sled-pulling applications
• Precision-manufactured springs for reliable operation
• Direct-fit installation inside the P7100 injection pump

Benefits

The factory governor springs begin limiting fuel delivery well before the engine reaches its full power potential. The MDC Diesel 4K Governor Spring Kit allows your engine to maintain fuel delivery at higher RPMs, resulting in smoother acceleration, stronger top-end performance, and improved power throughout the RPM range. This upgrade is considered one of the most effective modifications for any performance-oriented 12-valve Cummins build.

Vehicle Fitment

• 1994 Dodge Ram 2500/3500 5.9L Cummins
• 1995 Dodge Ram 2500/3500 5.9L Cummins
• 1996 Dodge Ram 2500/3500 5.9L Cummins
• 1997 Dodge Ram 2500/3500 5.9L Cummins
• 1998 Dodge Ram 2500/3500 5.9L Cummins (12-Valve)

Notes

• Installation requires removal and disassembly of the governor housing on the P7100 injection pump.
• Professional installation is recommended for those unfamiliar with P-pump tuning and adjustments.
• Intended for off-road and competition use where applicable.

Take control of your P7100’s fueling and unleash the true performance potential of your 12-valve Cummins with the MDC Diesel 4000 RPM Governor Spring Kit.