DDP DDP4BTP-4 CUMMINS P-PUMP 4BT STAGE 4 INJECTOR SET

The DDP 4BTP-4 injector set is a complete, ready-to-install solution for owners of the Cummins 3.9L 4BT engine equipped with a P7100 mechanical injection pump. Built using OEM-quality components and fitted with 4-hole performance nozzles, these injectors are optimized for enhanced fuel delivery, improved throttle response, and better combustion efficiency.

Perfect for step vans, Jeeps, custom swaps, or off-road rigs looking to bump power up to the 200–300 horsepower range without sacrificing drivability or reliability. Each injector is precisely assembled and flow-tested by Dynamite Diesel Performance to ensure consistent performance.

Vehicle / Engine Fitment

• Cummins 4BT 3.9L with Bosch P7100 Injection Pump

• Common in:

  • Step vans

  • Skid steers

  • Industrial/ag equipment

  • Swap projects (Jeeps, rat rods, off-road builds)

 Not compatible with VE-pump or electronic-injection versions.

Key Features

• Complete injector assemblies – ready to install

•  Features 4-hole performance nozzles

•  Ideal for builds in the 200–300 HP range

•  Each set is flow-tested and balanced

•  Improved atomization for cleaner combustion

•  Drop-in fit for P-pumped 4BT engines

•  Built and tested in the USA

Recommended Upgrades

• Mildly tuned P7100 injection pump

• Upgraded turbo (HX35, S300G, or similar)

• Aftermarket intake and exhaust

• Intercooler for enhanced air density

• AFC tuning for optimized fuel delivery

 Built for Performance & Reliability

Whether you're building a rugged workhorse or a fun swap project, the DDP 4BTP-4 injector set gives your 4BT the boost it needs. Count on Dynamite Diesel Performance for proven diesel upgrades, built to handle serious use without compromising drivability.