Delphi FP10557 Fuel Injection Pressure Regulator

Delphi Fuel Injection Pressure Regulator Overview

The Delphi FP10557 fuel injection pressure regulator is designed for precise fuel pressure control in select Saab and Volvo vehicles. Engineered with durable metal construction, this regulator ensures consistent fuel delivery for optimal engine performance in models like the Saab 900 and Volvo 960.

• Durable metal material for long-lasting performance
• Threaded inlet port with 0.55 inch (14.0 mm) diameter
• Push-in outlet port with 0.31 inch (8.0 mm) diameter
• Single inlet and outlet ports for streamlined fuel flow
• Clamp mounting type for secure installation
• Non-adjustable design for reliable factory-set pressure
• System pressure rating of 44 psi

Technical Details and Specifications

The Delphi FP10557 fuel injection pressure regulator features a metal body that withstands the demands of fuel injection systems. It includes one threaded inlet port measuring 0.55 inches (14.0 mm) in diameter and one push-in outlet port sized at 0.31 inches (8.0 mm). The clamp mounting type allows for a secure fit within the fuel system assembly. This regulator is non-adjustable, maintaining a consistent system pressure of 44 psi to ensure stable fuel delivery. The design supports fuel injection systems in specific Saab and Volvo models, including the Saab 900, 960, 9000, and Volvo S90 and V90.

Compatible Vehicles and Applications

This fuel injection pressure regulator is compatible with the following vehicles:

• Saab 900
• Saab 960
• Saab 9000
• Volvo S90
• Volvo V90

It is intended for use in fuel injection systems requiring precise pressure regulation to maintain engine efficiency and performance.

Common Issues Addressed by the FP10557 Regulator

• Fuel pressure fluctuations causing engine hesitation or stalling
• Poor fuel economy due to inconsistent fuel delivery
• Hard starting or rough idling related to fuel pressure irregularities
• Check engine light triggered by fuel system faults
• Fuel leaks or pressure loss from worn or damaged regulators

Installation Notes and Tips

Installation of the Delphi FP10557 requires attention to the inlet and outlet port types and sizes. The threaded inlet port (0.55 inch / 14.0 mm) must be securely connected to the fuel supply line, while the push-in outlet port (0.31 inch / 8.0 mm) connects to the return or fuel rail line. Use the clamp mounting type to firmly secure the regulator in place, preventing vibration or movement. Since this regulator is non-adjustable, no pressure tuning is necessary after installation. Always verify compatibility with your specific Saab or Volvo model before installation.

Quality Assurance and Warranty

Delphi manufactures the FP10557 fuel injection pressure regulator to meet OEM standards for durability and performance. The metal construction ensures resistance to corrosion and wear under normal operating conditions. While specific warranty details may vary, Delphi products typically come with a limited warranty covering defects in materials and workmanship. Consult product documentation or your supplier for exact warranty terms.