Delphi FP10459 Fuel Injection Pressure Regulator

Fuel Pressure Control for Mitsubishi Lancer

The Delphi FP10459 fuel injection pressure regulator is built for precise fuel system control in 2003-2006 Mitsubishi Lancer applications. It uses OE-based engineering and metal construction to help maintain consistent fuel pressure for reliable injector performance.

Key Features

• Fits 2003-2006 Mitsubishi Lancer
• Fuel injection pressure regulator for air and fuel delivery systems
• Metal body construction
• Push-in inlet with hose outlet
• Bolt-on mounting type
• Fixed-pressure design; not adjustable
• System pressure rating: 44
• Single inlet and single outlet configuration
• No gauge port

OE-Based Design and Fitment

Delphi FP10459 is engineered from more than a century of OE experience and supplier knowledge used by major automakers. For Mitsubishi Lancer fuel system service, this regulator helps restore proper fuel pressure control in 2003, 2004, 2005, and 2006 models. This part cross-references Beck/Arnley 158-1192 and Gates 24141 for the same application.

Common Issues This Part Can Address

• Fuel pressure that is too high or too low
• Rough idle caused by inconsistent injector fuel supply
• Hard starting related to pressure regulation problems
• Fuel delivery hesitation during acceleration
• Fuel system performance concerns on Mitsubishi Lancer models

Installation Notes and Tips

Verify inlet and outlet port sizes, hose routing, and bolt-mount alignment before installation. Confirm the regulator matches the vehicle’s fixed 44 system pressure requirement and the push-in inlet, hose outlet configuration. Always inspect related fuel lines and connections for wear or leakage during service.

Quality Assurance

Delphi builds aftermarket parts using OE heritage and application knowledge developed through long-term supplier experience with top automakers. The FP10459 is a metal fuel injection pressure regulator intended to support consistent fuel system operation in the specified Mitsubishi Lancer fitment.