DDP 4BTP-2NZ CUMMINS P-PUMP STAGE 2 NOZZLE SET 4BT

The DDP 4BTP-2NZ injector nozzle set is an OEM-style, mild-performance replacement designed specifically for Cummins 4BT engines equipped with the Bosch P7100 injection pump. These 2-hole nozzles offer a subtle fuel delivery increase while maintaining excellent atomization and combustion quality—perfect for users seeking a small power bump or a high-quality alternative to stock nozzles.

Whether you're rebuilding injectors, restoring a 4BT-powered machine, or upgrading a swap vehicle with minimal tuning, these nozzles offer a direct fit and reliable performance.

Vehicle / Engine Compatibility

• Cummins 3.9L 4BT with P7100 mechanical injection pump

• Common platforms include:

  • Step vans and delivery trucks

  • Industrial and agricultural equipment

  • Custom off-road builds and Jeep swaps

Not compatible with VE-pump or electronically controlled 4BT versions.

Key Features

•  2-hole nozzle design – clean, focused spray

•  Slight flow increase for stock-like performance

•  Precision manufactured and flow-calibrated

•  Ideal for injector rebuilds or mild upgrades

•  Works with stock injection system

•  Made in the USA using Bosch-style components

Installer Notes

• Nozzle-only set – requires disassembly and installation onto existing injector bodies

• We recommend professional installation and pop-testing to ensure proper function and longevity

Ideal Use Cases

• Stock injector replacements

• Light-duty off-road applications

• Generator or machinery engines

• Mild swap projects with stock injection tuning