Product Description
S&S Diesel LMM-45SAC-SET 45% Over Injector (NEW) — 2007.5–2010 GM Duramax 6.6L LMM
Level up your LMM. This brand-new S&S Diesel Motorsport 45% Over Injector Set uses precision-honed SAC nozzles and OE-calibrated internals, supplied as a matched set of eight for smooth fueling and reliable power gains. Each set is flow-balanced to tight tolerances and built for durability on the 2007.5–2010 Duramax LMM platform.
- New-body injectors with 45% over SAC nozzles; set is matched/balanced for consistency.
- Engineered, calibrated, and verified to OE-level standards; sizing offered by % over stock.
- Built for 2007.5–2010 LMM 6.6L Duramax trucks (Silverado/Sierra 2500/3500).
Fitment
2007.5–2010 Chevrolet Silverado & GMC Sierra 2500HD/3500HD with 6.6L Duramax LMM.
What’s Included
- (8) S&S LMM injectors — 45% over (NEW), matched/balanced set.
- Nozzle/flow documentation per S&S build process.
Recommended Parts
- Duramax Injectors & Nozzles (Category) — compare injector options for LMM builds.
- GM Duramax Lift Pumps — maintain rail supply on higher-flow injector setups.
- Exergy 12mm Stroker CP3 — 2007.5–2010 LMM — proven high-output CP3 upgrade for big fueling.
- Exergy LMM Fuel Rails — OE-fit rails to stabilize pressure under load.
- Shop All S&S Diesel at CPP — injectors, pumps, and more.
Helpful Notes
- For emissions compliance, verify local/state regulations before installation. (Many high-flow components are not CARB-approved.)
FAQ
- Are these injectors brand new or reman?
This listing is for a NEW matched set; S&S also offers reman options. - What trucks does LMM-45SAC-SET fit?
2007.5–2010 Chevy Silverado/GMC Sierra 2500/3500 with 6.6L Duramax LMM. - Do I need supporting mods?
A quality lift pump and a healthy/appropriately sized CP3 help maintain rail pressure with 45% over injectors. See our recommended parts above. - Why SAC nozzles?
SAC designs paired with S&S’s proprietary honing and tight flow-match help deliver clean, consistent fueling at higher flow rates. - Is this legal for on-road use in California?
Many high-flow injectors/nozzles are not CARB-approved; verify local regulations before purchase/installation.
