2004.5-2005 Duramax 20% Over Race1 Nozzle (0433171860-R1)

Industrial Injection's 20% Over Race1 nozzle for the 2004.5-2005 LLY Duramax is brought in direct from the OE supplier and then balanced and matched at the Industrial Injection facility using their extrude hone process. The result is a precisely calibrated nozzle that drops EGTs and adds power while preserving OE spray quality.

• 100HP gain / 20% over / 25 LPM flow rate
• Built with brand-new OE Spec Plus parts
• Improved atomization for better combustion
• Direct replacement for the OE nozzle
• Tested on a state-of-the-art test stand
• Includes a new copper crush washer for installation

• Sold individually — order eight (8) for a complete engine set.