Delphi FP10528 Fuel Injection Pressure Regulator

Fuel Pressure Control for Toyota and Lexus Applications

Delphi FP10528 is a fuel injection pressure regulator built for returnless fuel systems that require stable fuel delivery and precise pressure control. It uses a metal body, a push-in inlet, and a clamp-style mounting design for in-tank applications found on select Toyota, Scion, and Lexus models.

With OE-focused engineering informed by Delphi’s long history supplying automakers, this regulator supports consistent fuel system performance on vehicles such as the Toyota Camry, Corolla, Avalon, and Lexus ES350.

Key Features

• Metal construction for fuel system durability
• Returnless outlet design for modern in-tank fuel delivery systems
• Push-in inlet with clamp mounting
• Single inlet and single outlet configuration
• Fixed 45 system pressure
• No gauge port and non-adjustable design
• Inlet port diameter: 13.0 mm / 0.51 in

Detailed Description

Delphi FP10528 is a fuel injection pressure regulator designed for returnless fuel systems where pressure must remain steady for proper injector operation. The metal housing and OE-based design support dependable fuel control in the fuel tank, where this part is used on many Toyota and Lexus applications. This part cross-references Standard Ignition (e.g., PR135, PR236) for the same application.

Compatible With 1998-2006 Toyota Corolla, 2000-2005 Toyota Celica, 2000-2005 Toyota Echo, 2000-2005 Toyota MR2 Spyder, 2001-2003 Toyota Sienna, 2002-2006 Toyota Camry, 2003-2006 Toyota Matrix, 2004-2006 Toyota Solara, 2004-2006 Lexus ES330, 2004-2006 Scion xA, 2004-2006 Scion xB, 2005-2011 Toyota Camry, 2005-2010 Scion tC, 2005-2012 Toyota Avalon, and 2007-2012 Lexus ES350. It also fits 2005-2006 Toyota Camry without California Emission System and 2004 Toyota Camry Exc.SE Series.

Common Problems This Part Addresses

• Fuel pressure that drops below specification
• Hard starting caused by unstable fuel delivery
• Rough idle from inconsistent injector pressure
• Lean or rich running conditions tied to pressure regulation issues
• Fuel system performance problems in in-tank returnless setups

Installation Notes and Tips

Install this regulator in the fuel tank where specified by the vehicle application. Confirm the inlet diameter, push-in connection, clamp mounting style, and returnless outlet layout before installation. Because fitment varies by model year and emissions configuration, verify the exact vehicle listing for Toyota Avalon, Camry, Corolla, Matrix, Solara, Scion xA, xB, tC, and Lexus ES330 or ES350 applications.

Quality Assurance

Delphi builds aftermarket parts using OE heritage and engineering knowledge developed through long-term supplier experience with major automakers. FP10528 reflects that OE-focused approach for fuel pressure regulation in supported Toyota, Scion, and Lexus applications.