Product Description
S&S Diesel LMM-500SAC-SET 500% Over Injector (New) — 2007.5–2010 GM Duramax 6.6L LMM (Set of 8)
Built for extreme fueling and competition. This brand-new S&S Diesel Motorsport injector set uses precision SAC nozzles and OE-standard build practices for repeatable performance at very high flow.
Fitment
- 2007.5–2010 GM Duramax 6.6L LMM
- Chevy Silverado 2500/3500 HD & GMC Sierra 2500/3500 HD (LMM)
- Direct replacement style; competition use strongly recommended at this size (500% over).
What’s Included
- Eight (8) brand-new S&S LMM 500% Over Injectors (SAC nozzle)
- Flow-matched set; assembled to OE-level standards
- Installation notes from manufacturer (basic)
Recommended Parts (CPP Diesel — Internal Links)
- Shop All S&S Diesel at CPP
- Duramax Injectors & Nozzles (Category)
- GM Duramax Parts Hub
- LMM Fuel Rail (Left) — Exergy
- Compare: Exergy 500% LMM Injector Set
- Single 500% LMM Injector (S&S) — if replacing one unit
Helpful Notes
- Intended for competition builds (drag/dyno/sled pull) with proper air/fuel support and tuning.
- Core policy may apply depending on program; verify at checkout and with installer.
- Use high-quality filtration and clean fuel to protect your investment.
FAQ
Is this a set of eight injectors?Yes. The LMM-500SAC-SET is a complete set of eight brand-new injectors for the 2007.5–2010 LMM.
Are these truly 500% over stock?Yes. This size is engineered for extreme fuel flow with SAC nozzles and is meant for serious competition builds.
Do I need additional fuel system upgrades?Absolutely. A high-capacity lift pump, adequate filtration, and matching turbo/air system plus custom tuning are required to utilize 500% over injectors.
Will these work on an emissions-equipped daily driver?No. At this flow rate, these injectors are intended for off-road competition vehicles only with proper supporting mods and calibration.
Is there a single-injector option?Yes. If you need a single replacement, see our internal listing for the LMM-500SAC (single).
