S&S DIESEL LMM-450SAC-R-SET 450% OVER INJECTOR SET (REMAN) — 2007.5–2010 GM DURAMAX 6.6L LMM

S&S Diesel LMM-450SAC-R-SET 450% Over Injector Set (Reman) — 2007.5–2010 GM Duramax 6.6L LMM

Unlock serious race-fuel delivery with a matched set of eight S&S Diesel Motorsport remanufactured injectors featuring SAC nozzles honed to ~450% over stock flow and calibrated on OE-grade equipment for consistency across the set. Engineered for LMM platforms and competition use. Fitment and part details are validated against S&S and leading dealer listings.

Fitment

• Vehicle: 2007.5–2010 Chevy/GMC 2500HD/3500HD with 6.6L Duramax LMM.
• Part Number: LMM-450SAC-R-SET (Remanufactured set of 8).
• Use Case: High-flow, competition/race applications. (Tuning, supporting fuel system, and engine build recommended.) 

What’s Included

• (8) Remanufactured S&S Diesel Motorsport injectors, 450% over with SAC nozzles.
• Calibrated and flow-matched as a set to tight tolerances on Bosch equipment.
• Core return required by most vendors; check core terms at purchase.

Recommended Supporting Parts

• Shop All S&S Diesel at CPP
• Duramax Injectors — Category
• Fuel System Upgrades — Lift Pumps, Filtration, Lines
• EFI Live / Tuning & Programmers

Helpful Notes

• Professional installation and custom calibration are strongly recommended for 450% over injectors.
• Verify fuel supply (lift pump), filtration, and return system health before installation.
• For off-road/competition use where required; check all local and federal regulations.

FAQ

Yes. S&S flow-matches injectors and aligns injection profiles across the set using OE-grade equipment for consistency.

Absolutely. 450% over injectors require custom calibration and adequate fuel/air support for safe operation.

“R-SET” indicates reman bodies (S&S uses Bosch reman cores); “LMM-450SAC” designates new bodies. Flow/nozzle spec is the same; body condition differs.

Yes, most dealers require a core return and may charge a refundable core fee until your cores are received.