Nozzel , Iran

The Isuzu 6-ton diesel pump needle is a precision component in the fuel injection system of these commercial vehicles. This needle has a nominal diameter of 5 to 6 millimeters with dimensional tolerances below 2 microns during manufacturing. The needle material is high-speed steel with heat treatment reaching 62 HRC for superior wear and high pressure resistance. The needle tip angle is typically designed between 60 to 90 degrees for an optimal fuel spray pattern. Injection pressure for these needles is set between 130 to 250 bars depending on the engine model. Original Isuzu needles carry part number prefixes such as 04512, 09663, and 105018 for 4JB1, 4JH1, and 4HG1 engines respectively. The needle and nozzle body are matched as a precision pair and cannot be interchanged individually.

The diesel pump needle is responsible for injecting high pressure fuel directly into the combustion chamber. The needle seat angle of 30 to 45 degrees creates a metal-to-metal seal against the nozzle body. Needle lift distance is typically between 0.1 to 0.3 millimeters for an injection duration of only 1 to 3 milliseconds. Common failure symptoms include thick black smoke during sudden acceleration and increased fuel consumption by up to 30 percent. Engine power loss along with knocking sounds at idle speed are other clear indicators of needle wear. The check engine light may also illuminate with specific misfire codes related to individual cylinders. Needle replacement must always be performed as a complete set of four or six pieces. This ensures proper engine balance and prevents uneven fuel distribution across all cylinders. Regular inspection intervals for these needles are recommended every 150,000 kilometers under normal operating conditions.You can order and buy Nozzel from Iran by contacting us through whatsaap and email.
WEBSITE: Nozzel Iran