Delphi FP10573 Fuel Injection Pressure Regulator

Fuel Pressure Control for OE-Style Repair

Delphi FP10573 is a fuel injection pressure regulator built for precise fuel system control in select Dodge and Plymouth applications. It is a metal-bodied replacement part with OE-based engineering, made for 1993-1994 Dodge Spirit and 1993-1994 Plymouth Acclaim service needs.

Compatible with 1993-1994 Dodge Spirit and 1993-1994 Plymouth Acclaim, this regulator supports consistent fuel pressure at the specified 48 system pressure rating.

Key Features

• Metal construction for fuel system durability
• Fixed design with no adjustment required
• 1 inlet and 1 outlet for direct fuel pressure regulation
• Push-in inlet and threaded outlet connection style
• Bolt-mount installation layout
• 48 system pressure specification
• OE heritage from Delphi, with aftermarket engineering informed by original equipment experience

Detailed Description

Delphi FP10573 fuel injection pressure regulator is designed for vehicles that need stable fuel delivery and accurate pressure control at the rail or fuel system regulator point. The inlet measures 16.0 mm (0.63 in) with a push-in connection, while the outlet measures 12.7 mm (0.50 in) with a threaded connection. This configuration supports a direct replacement approach for the listed Dodge Spirit and Plymouth Acclaim applications. This part cross-references Dorman OE Solutions 800-317 for the same application.

Delphi draws on more than a century of OE experience and supplier knowledge used by major automakers, and that background is reflected in the FP10573 replacement design. The result is a fuel injection pressure regulator intended to restore proper fuel pressure behavior in 1993-1994 Dodge Spirit and 1993-1994 Plymouth Acclaim vehicles.

Common Issues This Part May Address

• Fuel pressure that is too high or too low
• Hard starting caused by unstable fuel delivery
• Rough idle related to inconsistent injector pressure
• Fuel odor or rich-running symptoms tied to regulator failure
• Driveability problems from poor fuel pressure control

Installation Notes and Tips

• Verify the inlet and outlet connection styles before installation.
• Confirm the regulator matches the vehicle’s 48 system pressure requirement.
• Inspect fuel lines, seals, and mounting points for wear before reassembly.
• Use the vehicle’s service information for proper fuel system depressurization and replacement procedure.
• Confirm fitment for 1993-1994 Dodge Spirit and 1993-1994 Plymouth Acclaim before ordering.

Quality Assurance

Delphi builds this fuel injection pressure regulator using OE-informed engineering and manufacturing knowledge developed through long-term supplier experience with top automakers. Part number FP10573 is made to support dependable fuel system service in the listed applications.