Product Description
Clean, consistent fueling for your LLY. The INDUSTRIAL INJECTION 0433171860-R1 extrude-honed injector nozzle flows 25 LPM (Race 1) for a crisp bump in power with excellent atomization when properly calibrated. OE-sourced Bosch tips are precision-honed and flow-matched for repeatable results—ideal for street/tow LLY builds looking for +HP without excessive smoke.
Fitment
- 2004.5–2005 Chevrolet Silverado 2500/3500 HD 6.6L Duramax LLY
- 2004.5–2005 GMC Sierra 2500/3500 HD 6.6L Duramax LLY
What’s Included
- (1) Extrude-honed Bosch-style injector nozzle/tip — 25 LPM
Key Features
- OE-sourced nozzles, then precision extrude-honed and balanced
- 25 LPM (Race 1) flow for street/tow use with tuning
- Improved atomization to help control EGT/smoke when calibrated
- Sold individually — order eight (8) for a complete set
Recommended Parts (CPP Internal Links)
- Injector Installation Kit (2004.5–2010 Duramax)
- Injector Return Line Kit (LLY/LBZ/LMM)
- Exergy 12mm Stroker CP3 (LLY) or DTECH Reman CP3 (LLY)
- EGT / Boost Gauges (AutoMeter at CPP)
- Shop All Duramax Injectors & Nozzles
Cross-Reference / Alternatives (LLY nozzle sizes)
- 0433171860-R2 — 27 LPM
- 0433171860-R3 — 29 LPM
- 0433171860-R4 — 32 LPM
- 0433171860-R5 — 37 LPM
- 0433171860-R6 — 42 LPM
- 0433171860DFLY — 24 LPM (DragonFly)
Helpful Notes
- Professional installation required. Nozzle swaps require proper setup and cleanliness.
- Always pair with appropriate tuning and verify rail pressure, balance rates, and EGT/boost when testing.
- Sold individually—order quantity 8 for a complete engine set.
FAQ
How much power is a 25 LPM (Race 1) nozzle good for?Industrial Injection rates nozzles by flow (LPM) rather than fixed HP because gains depend on turbo, CP3, tuning, and supporting mods. Race 1 (25 LPM) is commonly used for mild street/tow builds with clean drivability.
Do I need to buy eight nozzles?Yes—each nozzle is sold individually. Order eight for a complete V8 set.
Will these work with stock injectors?Yes—these are tips for Bosch-style LLY injectors. Ensure your injectors are healthy and that tuning matches the new flow rate.
Do I need other parts when installing?We recommend fresh seals (install kit), inspecting/refreshing return lines, verifying lift/CP3 supply, and monitoring EGT/boost during calibration.
