Product Description
S&S Diesel LBZ-400SAC-SET 400% Over Injectors (NEW) — 2006–2007 GM Duramax 6.6L LBZ
Go big with true 400% over SAC injectors. This brand-new S&S Diesel Motorsport set is engineered for maximum fuel delivery and consistency under competition use. No cores, no guesswork—just a matched set designed for serious LBZ builds.
Fitment
- 2006–2007 Chevrolet Silverado/GMC Sierra 2500HD/3500HD — 6.6L Duramax LBZ
- Direct-fit LBZ injector bodies, SAC nozzles, 400% over stock flow (for racing/competition use)
- Tuning, adequate air, and fuel supply are required to support the added flow
What’s Included
- (8) Brand-new S&S Diesel Motorsport LBZ injectors — 400% over, SAC nozzles
- Flow-matched set with tight variance for consistent cylinder-to-cylinder fueling
- Documentation and install guidelines from manufacturer
Recommended Parts (from CPP Diesel)
- LBZ Injectors & Components (06–07)
- Fuel System Upgrades (06–10 Duramax) — regulators, rails, lines
- High-Flow Air Intakes & Filters — pair with proper turbo/air supply
- Shop All S&S Diesel at CPP
Helpful Notes
- Competition-only component. Verify local regulations before on-road use.
- Lift pump and filtration upgrades strongly recommended to protect injectors.
- Professional installation and custom calibration required.
FAQ
Are these truly “new” injectors?
Yes. LBZ-400SAC-SET denotes a brand-new set (not reman). “-R-SET” indicates remanufactured.
Do I need tuning with 400% over injectors?
Absolutely. These are race-caliber injectors. Proper tuning, turbo/air supply, and fuel system support are required.
What nozzle style is used?
SAC nozzles (not VCO) for durability and high-flow performance in competition builds.
Will these work on LLY/LMM trucks?
No. This set is engineered for 2006–2007 LBZ only. See our injector categories for other generations.
What supporting mods are recommended?
Lift pump, filtration upgrades, high-flow air intake, appropriate turbo, and a return-style fuel system as needed for your power goals.
