BD's High RPM Mechanical Governor & Delivery Valve Kits can give you the power and torque you've been looking for. The High RPM Mechanical Governor Kit increases the Cummins engine speed to 3,000 or 4,000 rpm, reducing gear shifting and providing a new high-end horsepower levels. The Delivery Valve Kit yields optimum pump output without replacing plungers and barrels. These kits replace key components in the P7100 Bosch pump on 1994-1998 Dodge-Cummins applications and as such are not for a home install! All modifications must be done by a qualified pump technician otherwise damage could result, excessive heat/smoke could be generated and/or poor performance may occur.