Product Description
S&S Diesel LB7-400SAC-R-SET 400% Over Injector Set (Reman) — 2001–2004 GM Duramax 6.6L LB7
Serious LB7 power needs serious fueling. This 400% over remanufactured injector set from S&S Diesel Motorsport uses SAC-type nozzles and tight flow matching for clean, consistent delivery under extreme demand.
Fitment
- 2001–2004 GMC Sierra / Chevy Silverado 2500HD & 3500 — Duramax 6.6L LB7.
Key Features
- SAC-type performance nozzles (far more durable than stock VCO style).
- Set is flow-matched to tight tolerances for even cylinder fueling.
- Reman bodies built and calibrated on genuine Bosch equipment.
- Designed for high-fuel, competition-level builds (supporting mods required).
What’s Included
- (8) S&S Diesel LB7 400% Over Injectors — Reman
- Matched as a set for balanced flow
Recommended Supporting Parts
- Shop All S&S Diesel at CPP
- Airdog Lift Pumps — maintain rail pressure and protect injectors
- FASS Lift Pumps — additional fueling and filtration capacity
Helpful Notes
- 400% over injectors are intended for highly modified engines; tuning and fuel system upgrades are required.
- Core charges and returns may apply based on your selected option.
FAQ
Will these fit my LB7?
Yes—these are for 2001–2004 GM Duramax 6.6L LB7 applications.
Do I need a lift pump and tuning?
Yes. 400% over injectors require proper tuning and a high-quality lift pump to maintain supply and protect the system.
Are these SAC nozzles?
Yes. S&S uses SAC-style nozzles for durability and consistent flow under load.
Is this a single injector or a full set?
This SKU is a set of eight remanufactured injectors matched for balanced flow.
