Product Description
S&S Diesel LLY-45SAC-R-SET — 45% Over Reman Injector Set for 2004.5–2005 GM Duramax 6.6L LLY
Turn the LLY up the right way. This complete remanufactured injector set from S&S Diesel Motorsport uses SAC-type nozzles honed for ~45% over stock flow, then balances the set for smooth idle quality and consistent cylinder-to-cylinder fueling.
Fitment
- 2004.5–2005 Chevrolet/GMC 2500/3500 with 6.6L Duramax LLY.
- Direct replacement set; tuning and supporting fuel/air mods recommended for best results.
What’s Included
- (8) Remanufactured S&S LLY Injectors — 45% Over (SAC nozzle)
- Flow-matched set, test data, and install notes from S&S
Recommended Supporting Parts (CPP Internal Links)
Installation & Notes
- Professional installation and proper calibration are strongly recommended.
- Core return required on reman sets; verify timelines and credit terms before ordering.
- For off-road/race use where applicable; check local emissions regulations.
FAQ
**What size are these injectors compared to stock?**
Approximately 45% over stock flow (SAC nozzle).
**Are these balanced as a set?**
Yes, S&S flow-matches and balances sets for consistent performance and smooth operation.
**Do I need tuning with 45% over LLY injectors?**
Tuning and appropriate airflow/fuel supply upgrades are recommended to realize the gains and maintain drivability.
**Is there a core charge?**
Yes—this reman set requires a core return. Check your order confirmation for details.
