Product Description
Clean, consistent fueling for your LMM Duramax. The INDUSTRIAL INJECTION 0433171985DFLY Dragonfly extrude-honed injection nozzle flows 19 LPM (~15% over / ~50 HP) and is flow-balanced for crisp atomization, smoother idle, and reliable power when paired with proper tuning and airflow.
Fitment
- 2007.5–2010 Chevrolet Silverado 2500HD/3500HD — 6.6L Duramax LMM
- 2007.5–2010 GMC Sierra 2500HD/3500HD — 6.6L Duramax LMM
What’s Included
- (1) Extrude-honed Dragonfly nozzle — 19 LPM (sold individually)
- New copper crush washer for installation
Why It Works
- Extrude-honed & EDM finished for matched flow and spray quality
- ~15% over stock (≈50 HP) potential with supporting mods
- Better atomization can help reduce EGTs under load
- Direct-fit LMM nozzle for OE injector bodies
Cross-Reference / Alternatives (LMM Nozzles)
- 0433171985-R1 — 20 LPM
- 0433171985-R2 — 22 LPM
- 0433171985-R3 — 24 LPM
- 0433171985-R4 — 26 LPM
- 0433171985-R5 — 30 LPM
- 0433171985-R6 — 34 LPM (Race 6)
- Shop All Duramax Injectors & Nozzles
Recommended Supporting Parts
- Injector Return Line Kit — 2004.5–2010 LLY/LBZ/LMM
- Exergy 2000-bar PRV — LLY/LBZ/LMM (or 2400-bar Race PRV)
- S&S LBZ-Based CP3 Pump (LBZ/LMM)
- Duramax Lift Pumps
- GM Duramax Parts Home
Helpful Notes
- Calibration/tuning recommended. Increased flow requires proper calibration to maintain rail pressure, timing, and emissions compliance.
- Sold individually. Order quantity “8” for a full set of LMM injectors.
FAQ
Is this a complete injector or just the nozzle?This listing is for the nozzle only (sold individually) to install on your existing LMM injector body. It includes a new copper crush washer.
How much power will 19 LPM support?Industrial Injection rates the Dragonfly 19 LPM at roughly ~50 HP (~15% over) potential with proper supporting airflow and tuning.
Do I need a lift pump or PRV upgrade?For best results on higher-than-stock flow, add a quality lift pump and ensure the rail pressure relief valve is healthy or upgraded for your goals.
Emissions noticeCompetition-use only products may not be legal for on-road use. Check and comply with all applicable laws before purchase/installation.
