Delphi FP10489 Fuel Injection Pressure Regulator

Fuel Pressure Control for Nissan and Infiniti

The Delphi FP10489 fuel injection pressure regulator is built for precise fuel system control in select Nissan and Infiniti applications. It uses a metal body, a push-in inlet, and a hose outlet to support stable fuel pressure at 44 psi for consistent injector performance.

Compatible with 1991-1994 Infiniti G20, 1991-1993 Nissan NX, and 1991-1993 Nissan Sentra applications, this Delphi FP10489 regulator is a direct-fit fuel delivery component for vehicles that need accurate pressure regulation in the injection system.

Key Features

• Metal construction for fuel system durability
• System pressure rated at 44 psi
• Push-in inlet with 11.0 mm inlet port diameter
• Hose outlet with 8.0 mm outlet port diameter
• Bolt-mounted design for secure installation
• No gauge port and non-adjustable configuration
• OE-focused engineering from Delphi, backed by a century of original equipment experience

Detailed Product Overview

The Delphi FP10489 is a fuel injection pressure regulator engineered to maintain the correct fuel pressure across the injection system. Its metal housing and OE-style port layout support reliable fuel delivery in applications where pressure consistency is critical. This part number FP10489 is a practical replacement for vehicles that require a 44 psi regulator with a push-in inlet and hose outlet arrangement.

This part cross-references Dorman OE Solutions 800-167 for the same application. It also cross-references Standard Ignition PR55 for the same application.

Common Problems This Part Can Address

• Fuel pressure that is too high or too low
• Rough idle caused by unstable fuel delivery
• Hard starting related to pressure regulation issues
• Rich or lean running conditions from inconsistent injector pressure
• Fuel system performance concerns on Nissan Sentra, Nissan NX, and Infiniti G20 models

Installation Notes and Tips

Verify inlet and outlet port sizes, mounting style, and system pressure before installation. Confirm vehicle application by year and model: Fits 1991-1993 Infiniti G20, N/A; Fits 1994 Infiniti G20, N/A, to 01/1994; Fits 1991-1993 Nissan NX, N/A; Fits 1991-1993 Nissan Sentra, N/A. Always inspect fuel lines, seals, and surrounding components for wear before replacing the regulator.

Quality Assurance

Delphi draws on OE heritage and original equipment knowledge developed through more than 100 years of supplying automakers. That background is reflected in the design and application focus of the FP10489 fuel injection pressure regulator.