Product Description
S&S Diesel LLY-500SAC-R-SET 500% Over Reman Injector Set — 2004.5–2005 GM Duramax 6.6L LLY
Built for extreme fueling. This S&S Diesel Motorsport 500% over reman injector set delivers massive flow for serious competition builds. Each set is precisely flow-matched and uses SAC-type nozzles for consistent delivery and rate shape. Core return required.
Fitment
- 2004.5–2005 Chevrolet/GMC 2500HD & 3500HD with 6.6L Duramax LLY
- Direct-fit for LLY (mid-2004 to 2005½) applications
What’s Included
- (8) Reman S&S Diesel Motorsport injectors — 500% over, SAC nozzle
- Flow-match documentation (per set) and install notes
Recommended Supporting Parts
- Shop All S&S Diesel at CPP
- Injector Components & Install Kits
- Fuel System Upgrades (lift pumps, filtration, lines)
Important Notes
- Competition use only: Not legal for sale or use on pollution-controlled vehicles where prohibited. Verify local/state emissions laws.
- Tuning & supporting mods required: 500% over injectors demand adequate air, fuel supply, and calibration.
- Core policy: Core return required; additional core charge applies if cores aren’t returned.
- Professional installation recommended.
FAQ
Do I need a lift pump and larger CP3 with 500% over injectors?
Yes. For stable rail pressure and reliability under load, pair these with a high-flow lift pump and an appropriately sized high-pressure pump and lines.
Are these street legal?
No. 500% over race injectors are for off-road/competition use where permitted and are not CARB approved.
Are the injectors flow-matched?
Yes. Sets are flow-matched and balanced to tight tolerances to maintain consistent cylinder-to-cylinder fueling.
Is there a core charge?
Yes. A refundable core charge applies; credit issued upon acceptable core return.
