Product Description
S&S Diesel LB7-500SAC-SET 500% Over Injector (New) — 2001–2004 GM Duramax 6.6L LB7
Maximum fueling for serious builds. This brand-new S&S Diesel Motorsport 500% Over SAC nozzle injector set is engineered for high horsepower LB7 applications. Sold as a set of 8 new injectors, these are purpose-built for competition use with the proper supporting fuel system, turbo(s), and custom calibration.
Fitment
- 2001–2004 Chevrolet Silverado/GMC Sierra 2500/3500 — 6.6L Duramax LB7
What’s Included
- (8) New S&S Diesel 500% Over SAC injectors (LB7-500SAC-SET)
- Necessary injector sealing hardware (per injector)
- Installation guidelines (professional install recommended)
Recommended Supporting Parts
- Duramax Injectors & Nozzles (Category)
- MAHLE GS33757 Valve Cover Gasket & Injector Seal Kit (LB7)
- Lower Rocker/Valve Cover Gasket (LB7)
- Fuel Return Line Kit (LB7)
- High-Pressure Injector Line Set (LB7) or individual lines such as #2/#7 Line and #4/#5 Line
- Fuel Return Line Banjo Bolts (LB7)
Important Notes
- Tuning required. 500% over injectors demand custom calibration and adequate air and fuel supply.
- For competition/off-road builds only. Verify local emissions regulations.
- Replace or thoroughly clean injector lines during installation to prevent contamination.
FAQ
Is this a set of eight new injectors?Yes. LB7-500SAC-SET is a matched new set of eight injectors for 2001–2004 LB7.
Do I need custom tuning for 500% over injectors?Absolutely. These injectors require custom calibration along with sufficient lift pump, CP3, and turbo capacity.
What supporting parts should I add during the install?At minimum: new seals/gaskets, fresh high-pressure lines, and a return line kit to avoid contamination and leaks.
Will these fit all LB7 trucks?Yes, they fit 2001–2004 Chevrolet/GMC 2500/3500 with the 6.6L Duramax LB7.
