Product Description
S&S Diesel LML-250SAC-SET 250% Over Injector Set — 2011–2016 GM Duramax 6.6L LML
Serious fueling for serious builds. This brand-new S&S Diesel Motorsport injector set delivers approximately 250% over stock nozzle flow with S&S’s proprietary SAC honing and tight flow-matching, built to support extreme horsepower when paired with the right air and fuel system upgrades.
Fitment
- 2011–2016 Chevrolet Silverado/GMC Sierra 2500/3500 with 6.6L Duramax LML.
- Direct LML application; designed for race/competition use with appropriate supporting mods and calibration.
What’s Included
- (8) Brand-new S&S Diesel Motorsport LML injectors — 250% over (SAC).
- Flow-matched set with S&S quality controls.
- Install documentation/notes.
Recommended Supporting Parts
- GM Duramax Injectors & Nozzles — browse related injector options and components.
- S&S LML CP3 Conversion Kit (with Pump) — proven reliability and fueling capacity on LML platforms.
- Fleece LML CP3 Conversion Kit (with Pump) — no-tune hardware alternative for CP4 replacement.
- WCFab High-Pressure Line Upgrade for CP3 Conversions — increased high-side flow capacity.
- Shop All GM Duramax Parts — supporting turbo, air, and fuel upgrades for a balanced build.
Installation Notes
- Custom ECU calibration is required. For big nozzle sets like 250% over, a CP3 conversion, adequate low-pressure supply (lift pump), and appropriate turbo/airflow upgrades are strongly recommended.
- Core policy and emissions use: verify local regulations and core return instructions before purchase.
FAQ
Do I need a CP3 conversion and tuning with 250% over injectors?Yes. At this size, a CP3 conversion and custom calibration are required to properly control fueling and support the injector flow. A lift pump and adequate air system are also recommended.
Are these brand-new injectors or remanufactured?They are brand-new S&S injectors that are flow-matched and built to S&S standards.
What vehicles does this set fit?2011–2016 Chevrolet/GMC 2500/3500 equipped with the 6.6L Duramax LML.
Is there a core charge?A core return may be required depending on the specific injector option purchased. Check the core return terms on the product page at checkout.
Is this a street-legal upgrade?These large SAC-nozzle competition injectors are intended for race/competition applications. Verify your local and state regulations before purchase and installation.
