Cummins B Series Genuine Marine Diesel Fuel Injector

Original Cummins Diesel Fuel Injector for Series B Marine Engines

Original Cummins replacement part (Ref. 526331200) specifically designed for high-pressure injection systems in Series B marine engines (mechanical and Common Rail applications such as QSB 5.9). Replacing this component is vital at the first signs of failure in the fuel system, such as:

• Excessive emission of black or white smoke from the exhaust.
• Difficulty starting in cold conditions or unstable idle.
• Significant loss of power under continuous load conditions.
• Unusual increase in fuel consumption.

Technical assembly note: To ensure perfect sealing and avoid compression leaks in the cylinder head, it is essential to replace the lower copper washer at each intervention. It is recommended to check for the presence of moisture in the filtering circuit prior to installation to protect the micrometric tolerances of the new injector.