Product Description
S&S Diesel LB7-45SAC-SET 45% Over SAC45® NEW Injector Set — 2001–2004 GM Duramax 6.6L LB7
Genuine S&S SAC45® performance for your LB7. This brand-new set of eight S&S Diesel Motorsport injectors delivers approximately 45% over stock fueling with modern SAC-style nozzles for improved durability, calibration consistency, and smooth power on the 2001–2004 GM Duramax 6.6L LB7 platform. All S&S listings are sold as complete sets and require a core return when applicable.
Fitment
- 2001–2004 Chevrolet Silverado/GMC Sierra 2500HD/3500HD — 6.6L Duramax LB7.
What You Get
- 8× S&S Diesel SAC45® NEW injectors (matched set)
- Flow-matched and calibrated to tight tolerances on OE-grade equipment
- SAC-style nozzles for longevity compared to stock VCO designs
Why Choose S&S for LB7?
- Modern SAC nozzles and OE-level quality control for consistent rate-shape and delivery.
- Set pricing clearly listed by S&S (select Application/Type to see final price).
Recommended Supporting Parts
- Duramax Injectors & Nozzles — browse related LB7 injector options and components.
- LB7 Injection Lines — Complete Set (Fleece FPE-34611) — replace lines to avoid contamination on install.
- LB7 Injector Install Kit (BD 1050141) — gaskets, seals, and hardware sized for LB7.
- AirDog Lift Pumps — stabilize supply and protect your new injectors under load.
- Fuel Filtration & Filter Heads — service parts and upgrades for clean, consistent fuel.
- Shop All S&S Diesel at CPP — injectors, CP3 pumps, conversion kits and more.
Helpful Notes
- Core returns may apply per S&S policy.
- Professional installation and appropriate calibration are recommended when increasing injector size.
FAQ
Will these fit my 2001–2004 LB7?
Yes — this set is built for LB7-equipped 2500HD/3500HD trucks (2001–2004).
What’s different about SAC45® vs. stock?
S&S uses modern SAC-style nozzles for longevity and consistent fueling, whereas the OE LB7 injectors used VCO nozzles that are more failure-prone.
Is tuning required?
45% over injectors typically benefit from custom calibration to maximize drivability, power, and smoke control.
Do I need new injector lines?
It’s strongly recommended on LB7 due to age-related corrosion and contamination risks; replacing lines during injector service helps protect your new set.
