Delphi FP10453 Fuel Injection Pressure Regulator

Fuel Pressure Control for Hyundai Sonata

Delphi FP10453 is a fuel injection pressure regulator built with a metal body and OE-focused engineering for stable fuel system control. It is a direct-fit service part for 1990-1998 Hyundai Sonata applications and is specified with a 51 system pressure rating.

Key Features

• Metal construction for fuel system durability
• Push-in inlet with hose outlet for OE-style routing
• 1 inlet port and 1 outlet port
• Bolt-on mounting type
• No gauge port and non-adjustable design
• Inlet port diameter: 11.0 mm (0.43 in)
• Outlet port diameter: 8.0 mm (0.31 in)
• System pressure: 51

Detailed Description

Delphi FP10453 is a fuel injection pressure regulator for Hyundai Sonata models from 1990 through 1998. Built from metal and configured with a push-in inlet and hose outlet, it follows the OE-style layout used in the fuel delivery system to help maintain consistent pressure at the injector rail. Delphi draws on more than a century of OE experience, and that heritage is reflected in the fit, form, and function of this replacement part. This part cross-references Dorman OE Solutions 800-391 for the same application.

Common Repair Applications

• Fuel pressure that is too high or too low
• Hard starting related to unstable fuel delivery
• Rich or lean running conditions caused by pressure irregularities
• Fuel odor or drivability complaints tied to regulator wear
• Service replacement for aging Hyundai Sonata fuel system components

Installation Notes and Tips

Verify inlet and outlet port sizes before installation: 11.0 mm inlet and 8.0 mm outlet. Confirm the vehicle uses the specified 51 system pressure and the correct bolt-mount regulator layout. For 1990-1998 Hyundai Sonata fuel injection pressure regulator service, match the hose routing and push-in connection style to the original configuration before final assembly.

Quality Assurance

Delphi builds aftermarket parts using OE heritage and application knowledge developed through supplier experience with major automakers. FP10453 is engineered to reflect that original-equipment background for dependable service in Hyundai Sonata fuel delivery repairs.