2004.5-2005 Duramax Stage 4 50% Over Injector Nozzle (0433171860-R4)

Industrial Injection Stage 4 50% over injector nozzle for the 2004.5-2005 LLY 6.6L Duramax. Sourced direct from the OE supplier and then extrude-honed at Industrial Injection's facility so each nozzle is balance-matched to the rest of the set.

The R4 spec flows 32 LPM — a 50% increase over stock. Pair with supporting fuel and tuning to take advantage of the added flow while keeping atomization clean. Direct bolt-in for the stock nozzle.

• Stage 4 — 50% over stock flow / 32 LPM
• Built with brand-new OE Spec Plus parts
• Extrude-honed and balance-matched across the set
• Improved atomization and lower EGTs
• Direct replacement for the factory nozzle
• Tested on a state-of-the-art test stand
• Includes a new copper crush washer
• 1-year unlimited-mileage warranty
• Part Number: 0433171860-R4

• Sold individually
• No core required