This product has been discontinued. It fits 2001 - 2004 GM LB7 trucks with a 6.6L Duramax engine. The Dynomite Diesel DDP LB7 - 50NZ nozzles are 25% over stock, delivering about 50RWHP more than the stock on the LB7 Duramax. They offer great street performance and fuel efficiency (MPG) and are safe for stock trucks. However, it's recommended to use a pyrometer. Part Number: DDP.LB7 - 50NZ. Features include 25% over - stock with 50RWHP gains, capable of reaching 600 - 625RWHP, comes with a new set of copper sealing washers, excellent for street use and MPG, and it's just the nozzles.

How to use: These nozzles are designed to fit 2001 - 2004 GM LB7 trucks with a 6.6L Duramax engine. Simply install them in place of the stock nozzles. Note that a pyrometer is recommended to keep an eye on the engine's temperature. Maintenance advice: Regularly check the copper sealing washers for any signs of wear or damage. Replace them if needed to ensure a proper seal. Also, keep the nozzles clean to maintain their performance. Although these nozzles are safe for stock trucks, always monitor your vehicle's performance and take it to a professional if you notice any issues.