Product Description
S&S Diesel LLY-30SAC-SET 30% Over (NEW) Injector Set — 2004.5–2005 GM Duramax LLY 6.6L
Step up fueling and consistency with a brand-new S&S Diesel Motorsport 30% over injector set for LLY. Each set uses SAC nozzles honed in-house, nozzles flow-matched to ~1% per set, and injectors flow-matched to ~3% per set across multiple pressure/energizing points for smooth, repeatable performance. Sold as a set of 8.
- 30% over SAC-nozzle sizing; industry-standard % over stock convention.
- Brand-new bodies available (not just reman option).
- Nozzles matched ~1% per set; injectors matched ~3% per set for balance.
Fitment
Fits 2004.5–2005 GM 6.6L Duramax LLY (Chevy Silverado/GMC Sierra 2500/3500). Verify build date (mid-2004 changeover to LLY).
What’s Included
- (8) NEW S&S Diesel LLY 30% Over SAC Injectors (LLY-30SAC-SET)
- Build spec matched to nozzle flow rate
- Documentation for installation best practices
Recommended Supporting Parts
- Shop All S&S Diesel at CPP — pair with S&S pumps, lines, and electronics.
- Injector Category — browse Duramax injector tools, seals, and related hardware.
- Fuel System Upgrades — add a quality lift pump and filtration to protect your new injectors.
Installation & Notes
- Professional installation recommended; ensure fuel supply, filtration, and tuning are appropriate for 30% over flow.
- Core programs and pricing vary by vendor; check current policies if exchanging cores.
FAQ
Are these injectors truly brand-new, not reman?Yes — S&S offers brand-new bodies in addition to Bosch-reman options; this listing is for the NEW set (LLY-30SAC-SET).
What does “30% over” mean?It indicates approximate nozzle flow increase over stock using the industry’s %-over sizing convention. More flow supports higher power potential with proper air/tuning.
How does S&S match sets?Nozzles are flow-matched to ~1% per set and complete injectors ~3% per set using OE-style standards at multiple test points for smooth operation.
Do I need other upgrades?For best results and component protection, add quality lift pump/filtration and ensure tuning aligns with the 30% flow increase.
