Product Description
S&S Diesel LB7-250SAC-SET 250% Over Injector (New) — 2001–2004 GM Duramax 6.6L LB7
Serious LB7 power with S&S precision. This brand-new 250% over injector set uses SAC-style nozzles and tight flow matching to deliver the fuel you need for high-performance LB7 builds while maintaining S&S quality and reliability.
Fitment
- GM Duramax 6.6L LB7 — model years 2001, 2002, 2003, 2004
- Vehicle platforms: Silverado/Sierra 2500/3500 (LB7)
What’s Included
- (8) New S&S Diesel Motorsport 250% Over SAC Injectors (complete set)
- Flow-matched set with precision EDM/honed SAC nozzles
- Documentation and install notes
Recommended Supporting Parts (CPP Only)
- Shop All S&S Diesel at CPP
- LB7 Injector Lines (search)
- LB7 Injector Return Line Kit (search)
- LB7 Lift Pump Options (search)
- LB7 Head Studs (search)
Installation Notes
- Professional installation and custom calibration recommended for 250% over injectors.
- Verify emissions compliance for your intended use and local regulations.
FAQ
Do these fit every 2001–2004 LB7?
Yes—these are designed for LB7 6.6L Duramax applications for 2001–2004 Silverado/Sierra 2500/3500 platforms.
Are these new or reman?
This listing is for a new set (8 injectors).
Will I need tuning?
Yes—250% over injectors require supporting modifications and custom tuning to operate properly and safely.
What else should I upgrade?
We recommend a quality lift pump, fresh injector lines/return hardware, adequate filtration, and head studs for higher cylinder pressures.
