Dorman 904-309 Fuel Injection Fuel Rail Pressure Sensor

Overview of Dorman Fuel Injection Fuel Rail Pressure Sensor 904-309

The Dorman 904-309 Fuel Injection Fuel Rail Pressure Sensor is designed for specific heavy-duty trucks, including Chevrolet Silverado 2500 HD and 3500, GMC Sierra 2500 HD and 3500, and Dodge Ram 2500 and 3500 models. This sensor provides accurate fuel rail pressure readings essential for optimal engine performance.

• Terminal Type: Blade
• Thread Length: 10 mm
• Thread Diameter: 18 mm
• Connector Shape: Square
• Terminal Quantity: 3 (Male)
• Connector Gender: Male
• Specific fit for select Chevrolet, Dodge, and GMC heavy-duty trucks
• Package includes one high pressure fuel line sensor

Technical Details and Compatibility

The Dorman 904-309 sensor features a blade terminal type with three male terminals and a square-shaped male connector, ensuring a secure and precise electrical connection. The sensor’s thread diameter of 18 mm and thread length of 10 mm are engineered to match the fuel rail specifications of the Chevrolet Silverado 2500 HD and 3500, GMC Sierra 2500 HD and 3500, and Dodge Ram 2500 and 3500. This specific fitment guarantees proper installation and reliable operation without the need for modifications.

Function and Application

This fuel rail pressure sensor monitors the pressure within the fuel injection system, providing critical data to the engine control unit (ECU) for efficient fuel delivery and combustion. It is commonly used to address issues such as:

• Erratic engine performance or stalling
• Fuel pressure irregularities causing poor fuel economy
• Check engine light triggered by fuel system faults
• Hard starting or hesitation during acceleration
• Inconsistent idle or engine misfires

Installation Notes and Tips

Installation of the Dorman 904-309 sensor requires no additional wire harness or mounting bracket, simplifying the replacement process. Ensure the sensor’s 18 mm thread diameter and 10 mm thread length match the vehicle’s fuel rail port. Use appropriate tools to avoid damaging the blade terminals or connector. Verify the square-shaped male connector aligns correctly with the vehicle’s wiring harness for a secure fit.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM specifications, providing reliable performance for heavy-duty applications. The 904-309 Fuel Injection Fuel Rail Pressure Sensor undergoes rigorous quality control to ensure durability and accuracy. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in material and workmanship.