Product Description
S&S Diesel LMM-450SAC-SET 450% Over Injector (New) — 2007.5–2010 GM Duramax 6.6L LMM (Set of 8)
Maximum fuel flow for serious builds. The S&S Diesel Motorsport LMM-450SAC-SET is a brand-new set of eight Duramax LMM injectors with ~450% over SAC nozzle flow, engineered for extreme performance applications. Each set is precision matched and calibrated on OE-grade equipment for consistent delivery and rate shape.
- New S&S injectors with EDM/honed SAC nozzles; flow-matched and balanced as a set.
- Built and calibrated on genuine OE-standard equipment with multi-point verification.
- Available in new or Bosch-reman families across the line; this SKU is the NEW set.
- Core policy exists on many S&S injector families (typical charge if no core returned).
Fitment
2007.5–2010 Chevrolet Silverado / GMC Sierra 2500HD & 3500HD with 6.6L Duramax LMM.
What’s Included
- (8) S&S Diesel Motorsport LMM 450% Over Injectors — NEW bodies
- Pre-matched SAC nozzles and calibrated injector set documentation
Recommended Parts (Internal Links)
- Shop All S&S Diesel at CPP
- Fuel Injectors & Nozzles Category
- Fuel System Upgrades (lift pumps, filtration, lines)
Helpful Notes
- These are extreme-flow race injectors. Custom tuning, appropriate turbo(s), and supporting fuel system upgrades are required for proper operation.
- Emissions compliance varies by use; verify local and federal regulations before purchase/installation.
FAQ
Is the LMM-450SAC-SET a direct bolt-in for a stock truck?No. At ~450% over stock, these are competition-level injectors that require significant supporting mods (air, fuel, and tuning) to operate correctly.
Are these injectors new or reman?This listing is for a NEW set. S&S offers new and Bosch-reman bodies across the product line, but this SKU specifies new.
Are the injectors flow-matched as a set?Yes. S&S flow-matches nozzles and balances injectors to tight tolerances for consistent cylinder-to-cylinder delivery.
Do I need to return cores?S&S injector families commonly require a core return and may charge a fee if no core is returned; check your order terms.
What vehicles does this set fit?2007.5–2010 GM 6.6L Duramax LMM (Silverado/Sierra 2500HD/3500HD).
