DDP DDP4BTP-4NZ CUMMINS P-PUMP STAGE 4 NOZZLE SET 4BT

The DDP 4BTP-4NZ injector nozzle set from Dynamite Diesel Performance is designed for those building up the popular 3.9L Cummins 4BT engine with a P7100 (P-pump). Featuring a 4-hole nozzle design, this set delivers enhanced fuel atomization and increased flow over stock nozzles, making it a perfect match for mild performance builds, off-road rigs, or even retro swaps looking for more power and improved drivability.

These nozzles are engineered to work specifically with P-pumped 4BT setups and are ideal for 200–400 horsepower goals when paired with upgraded turbo(s), injection pump tuning, and airflow improvements.

Vehicle Fitment / Engine Compatibility

• Cummins 4BT (3.9L) with Bosch P7100 Injection Pump

• Commonly found in:

  • Step vans, skid steers, marine & industrial applications

  • Popular for engine swaps (Jeeps, hot rods, off-road builds)

 Designed only for P-Pump equipped 4BTs – not VE or electronic pumps.

Key Features

•  4-hole nozzle design for improved spray pattern

•  Larger orifices for mild performance gains

•  Suitable for builds making 200–400 HP

•  Enhanced combustion and throttle response

•  Works with stock or modified P7100 pump

•  Requires injector disassembly and installation (nozzles only)

• Precision manufactured in the USA

Recommended Pairings

• Tuned P7100 injection pump

• Small-to-mid frame performance turbo (e.g., HX35, S300 variants)

• Performance intercooler and free-flowing exhaust

• Built transmission for added power levels

• Optional AFC tuning for fuel curve adjustment

 Installer Note:

This is a nozzle-only set and requires installation on injector bodies. We recommend professional installation and pop-testing for best performance and reliability.