Product Description
S&S Diesel LLY-60SAC-R-SET 60% Over Injector Set (Reman) — 2004.5–2005 GM Duramax 6.6L LLY
Boost your LLY’s fueling with a matched set of 60% over SAC-nozzle reman injectors from S&S Diesel Motorsport. Built to OE standards, balanced as a set, and designed for serious street/strip builds that demand consistent flow and reliable performance.
Fitment
- 2004.5–2005 Chevrolet Silverado/Sierra 2500HD & 3500HD — 6.6L Duramax LLY
What’s Included
- (8) Reman S&S LLY common-rail injectors — 60% over SAC nozzles
- New seals & o-rings (per injector)
- Flow-balanced set for smooth operation
Core required: Reman set requires returning acceptable cores to receive core credit.
Tuning recommended: 60% over injectors typically require custom calibration to maintain proper rail pressure, timing, and clean smoke output.
For off-road/competition use where applicable. Check local and state regulations.
Recommended Supporting Parts
- Duramax Injectors & Nozzles Category — compare injector options and nozzles for LLY.
- Injector Return Line Kit (LLY/LBZ/LMM) — refresh aging return lines for leak-free installs.
- Return Line Kit (Alt. option) — OE-quality hardware, LLY/LBZ/LMM.
- GM Duramax Parts Hub — shop fuel filtration, lift pumps, gaskets, and more for LLY builds.
FAQ
- What does “60% over” mean?
It indicates approximately 60% greater nozzle flow than stock, supporting higher fuel delivery for tuned performance builds. - Do I need tuning with these injectors?
Yes. Custom calibration is strongly recommended to dial in pulse width, rail pressure, timing, and emissions control for drivability and power. - Are these SAC nozzles?
Yes, this set uses SAC-type nozzles known for durability and consistent flow in performance applications. - Is a core charge required?
Yes. This reman set requires returnable cores for credit. See cart for core details and timelines. - Will these fit my 2004 LLY built early in the year?
These are for 2004.5–2005 LLY trucks. If your truck is early-2004 (LB7), confirm your VIN/engine code before ordering.
