DDP DDPL5P-100 2017-PRESENT DURAMAX L5P BRAND NEW INJECTOR SET 100HP 25 PERCENT OVER STOCK

Built for serious power, the DDP L5P-100 Injector Set is a 100% over fuel flow upgrade for the 2017–2023 6.6L L5P Duramax. Designed for high-performance street builds and dedicated race trucks, these injectors flow twice the fuel of stock and support 850–1,000+ horsepower with proper supporting mods.

Unlike most competitors, DDP injectors are brand new – not remanufactured – and are precision-balanced, flow-matched as a set, and engineered in the USA. Whether you're running big singles or compounds, the L5P-100 set gives you the fueling edge for top-tier performance.

Vehicle Fitment

• 2017–2019 Chevrolet Silverado 2500HD / 3500HD

• 2017–2019 GMC Sierra 2500HD / 3500HD

• 2020–2023 Silverado HD & Sierra HD (L5P 6.6L Duramax)

For off-road use only. Custom tuning is required.

Ideal For:

• Drag racing & sled pull builds

• 850–1,000+ HP street trucks

• Compound turbo setups

• High-pressure fueling upgrades

• Big fuel, big air applications

Key Features

• 100% Over Flow Rate – Delivers maximum fuel volume

• Brand-New Injectors – No cores, no rebuilds

• Precision Flow-Matched – Cylinder-to-cylinder balance

• Built in the USA – Hand-assembled and tested by DDP

• Duramax L5P-Specific Fitment – Plug-and-play with tuning

Recommended Upgrades

To safely and fully support L5P-100 injectors, we strongly recommend:

• Modified or dual CP3 fuel system (conversion required)

• High-flow lift pump (AirDog / FASS)

• Custom ECM & TCM tuning

• Upgraded turbo or compound kit

• Built transmission (to handle torque increase)

• Intercooler & exhaust improvements

Max Out Your L5P Build

The DDP L5P-100 Injector Set is for diesel builders chasing 1,000+ HP with proven fueling components. Precision-matched, race-tested, and ready for big air.