Dorman 904-571 Fuel Injection Pressure Regulator

Reliable Fuel Injection Pressure Regulator for Dodge and Mercedes-Benz

The Dorman 904-571 fuel injection pressure regulator is designed to maintain consistent fuel pressure in common rail fuel systems. Engineered with durable metal construction, this regulator is compatible with select Dodge and Mercedes-Benz models, including the E320, GL320, ML320, R320, Sprinter 2500, and Sprinter 3500.

• Constructed from durable metal for long-lasting performance
• Maximum pressure reading of 50 psi to maintain optimal fuel delivery
• Non-flanged inlet and outlet ports with female thread inlet and bolt-on outlet attachment
• Compatible with common rail fuel injection systems
• Designed for standard replacement with stock pressure range
• Includes one fuel pressure regulator (part number 904-571)

Technical Details and Compatibility

The Dorman 904-571 fuel injection pressure regulator features a single inlet port with a diameter of 0.12 inches and four outlet ports each measuring 0.093 inches in diameter. The inlet uses female threaded attachment, while the outlet is designed for bolt-on installation. This regulator does not include an adjustable fuel pressure feature, gauge port, or boost/vacuum reference port, making it suitable for stock fuel pressure applications. It is specifically engineered for common rail fuel systems found in Dodge and Mercedes-Benz vehicles such as the E320, GL320, ML320, R320, Sprinter 2500, and Sprinter 3500 models.

Common Applications and Problem Resolution

• Maintains consistent fuel pressure for efficient engine performance
• Prevents fuel pressure fluctuations that can cause rough idling or stalling
• Addresses fuel delivery issues related to pressure regulator failure
• Helps resolve poor acceleration caused by incorrect fuel pressure
• Supports proper fuel injection timing and engine responsiveness

Installation Notes and Tips

Installation of the Dorman 904-571 fuel injection pressure regulator requires basic mechanical skills and appropriate tools. The regulator features a bolt-on outlet attachment and a female threaded inlet port for secure connection. Note that installation hardware is not included, so ensure you have the necessary bolts and fittings before beginning installation. Always relieve fuel system pressure before removal and installation to avoid fuel spray hazards. Verify compatibility with your specific Dodge or Mercedes-Benz model prior to installation.

Quality Assurance and Warranty Information

Dorman manufactures the 904-571 fuel injection pressure regulator to meet standard replacement specifications, ensuring reliable performance and durability. This part is backed by Dorman's quality standards and typically includes a limited warranty against defects in materials and workmanship. For detailed warranty terms, refer to Dorman's official documentation or contact the manufacturer directly.