DDP DDPLLY-300 DURAMAX 04.5-05 LLY REMAN INJECTOR SET 150 PERCENT OVER SAC NOZZLE -

The DDPLLY-300 injector set from Dynamite Diesel Performance delivers 300% more fuel flow than stock, engineered for extreme horsepower applications in race-only Duramax builds. Constructed using brand-new  injector bodies, these injectors are modified with precision for serious competitors chasing 1,300+ HP on the track.

These are not street-legal, and require extensive supporting modifications including dual CP3s or a 14mm pump, high-flow lift pump, full tuning, built engine internals, and turbocharging systems to match.

Vehicle Fitment

• 2004.5–2005 Chevrolet Silverado 2500HD / 3500HD

• 2004.5–2005 GMC Sierra 2500HD / 3500HD

• Equipped with 6.6L Duramax LLY

For off-road/racing use only – not emissions-compliant
 Not suitable for towing, commuting, or light mods
 Requires extensive fuel/air/tuning upgrades

Key Features

• 300% over injector flow for maximum fuel delivery

•  Flow-balanced within 1% for peak performance and consistency

• Brand-new OE bodies – never remanufactured

•  Custom-built for race/drag/Dyno applications

•  Core charge applies (core return required)

•  Hand-assembled and tested in the USA

Recommended Supporting Mods

• Dual CP3 or 14mm stroker pump

• 12mm or higher-capacity lift pump (FASS or AirDog)

• Forged engine internals

• Large compound or single turbo system

• Custom EFI Live tuning

• Transmission and driveline upgrades

 The DDPLLY-300 is Dynamite Diesel’s highest-flow injector set for the LLY platform, purpose-built for drag racing, sled pulling, and max-performance competition builds. For those pushing limits — these are your injectors.