Delphi FP10483 Fuel Injection Pressure Regulator

Fuel Pressure Control for Mazda Applications

Delphi FP10483 is a fuel injection pressure regulator built for precise fuel system control in select Mazda vehicles. It is a metal, bolt-mounted regulator with a push-in inlet and hose outlet, engineered for a 39 psi system pressure specification.

Compatible with 1994-1997 Mazda Miata and 1995-2002 Mazda Millenia, this Delphi fuel injection pressure regulator supports consistent fuel delivery in OE-style repair applications. Delphi’s OE heritage and supplier experience are reflected in the part’s design and material selection.

Key Features

• Delphi FP10483 fuel injection pressure regulator
• Metal construction for fuel system durability
• 39 psi system pressure specification
• Push-in inlet and hose outlet configuration
• Bolt-on mounting type for direct replacement service
• Single inlet and single outlet layout
• Non-adjustable design for fixed-pressure operation
• Compatible with Mazda Miata and Mazda Millenia applications

Detailed Description

The Delphi FP10483 is a fuel injection pressure regulator designed to maintain stable fuel pressure in the injection system. Its metal body, 11.0 mm inlet port diameter, and 8.0 mm outlet port diameter support a factory-style fit for the listed Mazda applications. This part cross-references Beck/Arnley 158-0562 for the same application.

Use Delphi FP10483 when servicing a 1994-1997 Mazda Miata or a 1995-2002 Mazda Millenia that requires a fixed 39 psi regulator. The non-adjustable design helps preserve original fuel system calibration, while the bolt-mounted layout supports straightforward replacement in OE-style repairs.

Common Repair Symptoms

• Fuel pressure that is too high or too low
• Rough idle or inconsistent engine operation
• Hard starting after fuel system wear
• Fuel delivery issues affecting throttle response
• Pressure regulation problems in Mazda Miata or Mazda Millenia fuel systems

Installation Notes and Tips

Verify inlet and outlet port sizes, mounting style, and system pressure before installation. Confirm the regulator matches the vehicle’s fuel line routing and factory pressure specification. Inspect surrounding fuel system components during replacement to help avoid repeat repairs on the Mazda Miata or Mazda Millenia.

Quality Assurance

Delphi builds aftermarket parts using OE experience and knowledge developed through long-term supplier relationships with major automakers. FP10483 reflects that OE-focused approach in a replacement fuel pressure regulator for the listed Mazda applications.