INDUSTRIAL INJECTION 0433171924-R6 GM EXTRUDE-HONED INJECTION NOZZLE — 2006–2007 6.6L DURAMAX LBZ — 40 LPM (SOLD INDIVIDUALLY)

Step up fueling on your 2006–2007 6.6L LBZ Duramax with Industrial Injection’s 40 LPM extrude-honed injector nozzle (sold individually). Engineered from OE nozzles and precisely flow-matched via the extrude-hone process, the R6 (40 LPM) size supports aggressive street/strip builds with proper air, fuel supply, and tuning.

Fitment

• 2006–2007 Chevrolet Silverado / GMC Sierra 2500HD & 3500HD with 6.6L Duramax LBZ

What’s Included

• (1) Extrude-Honed Injector Nozzle — 40 LPM (R6, sold individually)

Why This Nozzle

• Extrude-honed flow for consistent delivery across cylinders
• 40 LPM capacity to support higher horsepower with matching turbo and pump
• OE-based quality starts with genuine-style nozzles before precision finishing

Recommended Supporting Parts (CPP Internal Links)

• Lift Pump: AirDog II-5G DF-165 (LB7/LLY/LBZ 2001–2010)
• High-Output CP3: Industrial Injection Double Dragon 120 CP3 (LBZ/LMM)
• Injector Return Hardware: Bostech ISK637 Return Line Kit (LLY/LBZ/LMM)
• High-Pressure Injector Lines:
  • Cyl 1 & 8
  • Cyl 3 & 6
  • Cyl 4 & 5
  • Cyl 2 & 7
• Browse Related: Duramax Injectors & Nozzles

Other Available LBZ Nozzle Sizes

• R1 — 24 LPM
• R2 — 26 LPM
• R3 — 38 LPM
• R4 — 30 LPM
• R5 — 35 LPM

Helpful Notes

• Tuning required: Custom calibration is recommended to maximize power and control smoke with 40 LPM flow.
• Match with adequate air (turbo) and fuel supply (lift pump / CP3) to maintain rail pressure under load.
• Professional installation recommended; cleanliness and torque specs are critical for injector/nozzle work.

FAQ

This R6 40 LPM nozzle is sold individually. Order quantity to match the number of injectors you are upgrading.

For best results, yes. A quality lift pump and a healthy or upgraded CP3 help maintain rail pressure and reliability as fueling demand increases.

They are intended for LBZ engines only (2006–2007). Verify your VIN/engine code is LBZ before ordering.

Power potential depends on the total combo (turbo, CP3, tuning, etc.). 40 LPM is a popular step for aggressive street/strip builds with proper supporting mods.