Product Description
S&S Diesel LMM-250SAC-SET 250% Over Injector Set (NEW) — 2007.5–2010 GM Duramax 6.6L LMM
Built for serious fuel demand. This brand-new S&S Diesel Motorsport injector set uses SAC-style nozzles opened to 250% over stock, then each injector is assembled and balanced as a matched set for consistent delivery under high load. Engineered for competition builds that require major fueling headroom.
Fitment
- 2007.5–2010 Chevrolet Silverado/GMC Sierra HD with 6.6L Duramax LMM (set of 8).
What’s Included
- (8) Brand-new S&S Diesel LMM common-rail injectors with 250% over SAC nozzles
- Flow-matched and balanced as a set for tight variance
- Built to S&S specs with profile control and multi-point QC
Recommended Supporting Parts
- Duramax Injectors & Nozzles (Category) — compare injector options, cores, and accessories at CPP.
- Duramax Fuel Systems & Components — lift pumps, filters, lines, and hardware to support high fuel demand.
- All GM Duramax Parts — shop intake, turbo, and head stud upgrades for a complete build.
- Shop All S&S Diesel at CPP — injectors, pumps, and CP3 solutions.
Notes
- Competition-only sizing: 250% over injectors typically require substantial air, fuel supply, and calibration changes. Consult your tuner.
- Core policy and warranty are determined by the manufacturer and may vary by option.
FAQ
Are these injectors brand-new or reman?This specific part number is the NEW set. S&S also offers reman options in some applications; confirm part numbers when comparing.
Do I need a lift pump and tuning with 250% over injectors?Yes—at this flow level you should plan on a proper lift pump, upgraded filtration, and professional tuning. See our recommended parts above for supporting hardware.
What nozzle style is used?SAC style EDM/honed nozzles sized to approximately 250% over stock for high-fuel, competition builds.
Is there a warranty?Retailer listings commonly note a 2-year warranty on S&S injectors; verify current terms at checkout.
