Product Description
S&S Diesel LB7-80SAC-R-SET — 80% Over Injector Set (Reman) — 2001–2004 Duramax 6.6L LB7
Built for serious fueling demands on the LB7 platform, this 80% over, remanufactured injector set uses S&S Diesel Motorsport’s SAC-nozzle technology and OE-calibrated internals to deliver precise control with dramatically increased flow. S&S pioneered the LB7 SAC approach to replace the failure-prone VCO style and improve longevity and performance.
Fitment
- 2001–2004 Chevrolet Silverado / GMC Sierra 2500HD–3500HD with 6.6L Duramax LB7.
What’s Included
- (8) Remanufactured S&S Diesel Motorsport 80% over LB7 injectors (SAC nozzle)
- Balanced as a matched set to tight S&S tolerances
- Core return required (typical industry practice for S&S reman sets)
Recommended Supporting Parts
- Shop All S&S Diesel at CPP — pair injectors with S&S pumps and fuel system components for a complete build.
- LB7 Injector Line (example: Cyl 1 & 8) — fresh high-pressure lines help prevent leaks and balance rail pressure.
- LB7-80SAC (NEW) — Single Injector — for mixing/matching or spares.
- LB7-45SAC-R-SET (Reman) — 45% Set — a milder alternative when targeting lower power goals.
Installation Notes
- Professional installation and ECM calibration/tuning recommended for 80% over injectors to optimize drivability and control EGTs.
- Verify local emissions regulations for modified fueling components.
FAQ
Will these fit my 2001–2004 LB7 without extra adapters?Yes. These are LB7-specific common-rail injectors for 2001–2004 GM 6.6L Duramax LB7 applications.
Do I need tuning with 80% over injectors?Strongly recommended. Larger nozzles require proper calibration to maintain rail pressure control, idle quality, and smoke/EGT management.
What’s the advantage of SAC nozzles on LB7?SAC nozzles address known durability issues of the original LB7 VCO design and support higher, cleaner flow when built and balanced to S&S specs.
What about pricing direct from S&S?S&S publishes product details and directs buyers to dealers; pricing is not shown on their site. We display our CPP pricing and stock here.
