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LLY Duramax New 50HP Injector Set (20% Over) – DDP NLLY-50
Upgrade your 2004.5–2005 LLY Duramax with Dynomite Diesel’s brand-new 20% over injector set. These injectors deliver approximately +50 rear-wheel horsepower over stock while remaining completely safe on an otherwise stock truck. They support up to roughly 600–625 RWHP when paired with supporting modifications, yet retain excellent street manners and solid fuel economy for daily driving or light towing.
Key Features
- Brand-new injectors (not remanufactured) — no core charge
- 20% increased flow for ~50 RWHP gain
- Fully flow-balanced and matched set of 8 injectors
- SAC-style nozzles for clean, efficient combustion
- Drop-in replacement — no additional fuel system upgrades required for the base power increase
- Supports higher power levels with proper supporting mods (tune, turbo, etc.)
- 2-year unlimited-mileage warranty (typical coverage)
Vehicle Fitment
- 2004.5–2005 Chevrolet Silverado 2500HD / 3500HD
- 2004.5–2005 GMC Sierra 2500HD / 3500HD
- 6.6L Duramax LLY only
Notes: A pyrometer is recommended for monitoring exhaust gas temperatures.
These DDP injectors give you a noticeable power bump, smoother operation, and the reliability of brand-new components without the hassle of a core return — ideal for owners who want more performance while keeping their LLY streetable and efficient.
LLY Duramax New 50HP Injector Set (20% Over) – DDP NLLY-50
Upgrade your 2004.5–2005 LLY Duramax with Dynomite Diesel’s brand-new 20% over injector set. These injectors deliver approximately +50 rear-wheel horsepower over stock while remaining completely safe on an otherwise stock truck. They support up to roughly 600–625 RWHP when paired with supporting modifications, yet retain excellent street manners and solid fuel economy for daily driving or light towing.
Key Features
Brand-new injectors (not remanufactured) — no core charge
20% increased flow for ~50 RWHP gain
Fully flow-balanced and matched set of 8 injectors
SAC-style nozzles for clean, efficient combustion
Drop-in replacement — no additional fuel system upgrades required for the base power increase
Supports higher power levels with proper supporting mods (tune, turbo, etc.)
2-year unlimited-mileage warranty (typical coverage)
Vehicle Fitment
2004.5–2005 Chevrolet Silverado 2500HD / 3500HD
2004.5–2005 GMC Sierra 2500HD / 3500HD
6.6L Duramax LLY only
Notes: A pyrometer is recommended for monitoring exhaust ga[...]
LLY Duramax New 50HP Injector Set (20% Over) – DDP NLLY-50
Upgrade your 2004.5–2005 LLY Duramax with Dynomite Diesel’s brand-new 20% over injector set. These injectors deliver approximately +50 rear-wheel horsepower over stock while remaining completely safe on an otherwise stock truck. They support up to roughly 600–625 RWHP when paired with supporting modifications, yet retain excellent street manners and solid fuel economy for daily driving or light towing.
Key Features
- Brand-new injectors (not remanufactured) — no core charge
- 20% increased flow for ~50 RWHP gain
- Fully flow-balanced and matched set of 8 injectors
- SAC-style nozzles for clean, efficient combustion
- Drop-in replacement — no additional fuel system upgrades required for the base power increase
- Supports higher power levels with proper supporting mods (tune, turbo, etc.)
- 2-year unlimited-mileage warranty (typical coverage)
Vehicle Fitment
- 2004.5–2005 Chevrolet Silverado 2500HD / 3500HD
- 2004.5–2005 GMC Sierra 2500HD / 3500HD
- 6.6L Duramax LLY only
Notes: A pyrometer is recommended for monitoring exhaust gas temperatures.
These DDP injectors give you a noticeable power bump, smoother operation, and the reliability of brand-new components without the hassle of a core return — ideal for owners who want more performance while keeping their LLY streetable and efficient.
California Restricted
Fits: LLY Duramax 2004.5-2005
California Restricted
Fits: LLY Duramax 2004.5-2005