Dynomite Diesel DDP-RAC RAC Rack Plug for 1994–1998 5.9L 12-Valve Cummins P7100

Unlock extra fueling on your 2nd-gen 12-valve Cummins with the Dynomite Diesel RAC Rack Plug (DDP-RAC / DDPRAC). This aftermarket replacement for the P7100 injection pump’s factory rack plug increases rack travel from the stock 18 mm to 21 mm, significantly raising the cubic centimeters of fuel delivered per stroke.

The extra travel lets the pump deliver more fuel for higher power potential when paired with supporting modifications (injectors, turbo, exhaust, and proper tuning). It is a simple, proven upgrade used by many 12-valve owners building street, towing, or performance setups.

Fitment

• 1994–1998 Dodge Ram 2500 / 3500
• 5.9L 12-valve Cummins with Bosch P7100 (“P-pump”)

Key features

• 21 mm rack travel (vs. factory 18 mm)
• Dramatically increases fuel volume delivered
• Direct replacement rack plug for the P7100
• Precision-made by Dynomite Diesel

Installation note The injection pump must be unbolted from the engine and the timing gear removed to install this plug.

A straightforward, high-value upgrade for anyone wanting more fuel from a stock or modified P7100 on a 5.9 12-valve Cummins.