Delphi FP10529 Fuel Injection Pressure Regulator

Fuel Pressure Control for Toyota and Lexus Applications

Delphi FP10529 is a fuel injection pressure regulator built with a metal body and OE-focused engineering for stable fuel delivery. It is a direct-fit style replacement for a wide range of Toyota, Lexus, Scion, and select Honda applications, including Corolla, Prius, Camry, RAV4, and related models.

With a fixed 46 system pressure rating, push-in inlet and outlet connections, and clamp mounting, this regulator is specified for fuel tank and in-tank regulator applications where precise pressure control is required.

Key Features

• Metal construction for fuel system durability
• Fixed 46 system pressure specification
• Push-in inlet and outlet ports for OE-style routing
• Clamp-mounted design
• No gauge port and non-adjustable configuration
• OE heritage backed by Delphi’s long history supplying automakers

Detailed Description

Delphi FP10529 is engineered as a fuel injection pressure regulator for vehicles that rely on consistent fuel pressure at the rail or in-tank regulator assembly. The metal housing, 16.0 mm inlet port, and 8.0 mm outlet port support OE-style fitment, while the non-adjustable design keeps pressure control aligned with the original system specification. Delphi’s aftermarket parts draw on decades of OE experience, which is especially important in fuel delivery components where pressure stability affects drivability and emissions performance.

This part cross-references Standard Ignition PR450 and Beck/Arnley 158-1558 for the same application. It is a strong match for long-tail searches such as fuel injection pressure regulator for 2007-2017 Toyota Camry, in fuel tank regulator for 2018-2019 Toyota Corolla, and in-tank regulator for 2020 Toyota Prius Prime.

Common Issues This Part Addresses

• Fuel pressure that is too high or too low
• Hard starting caused by unstable fuel delivery
• Rough idle or hesitation under load
• Fuel system performance problems in tank-mounted regulator setups
• Pressure control faults on Toyota Corolla, Prius, Camry, RAV4, and Lexus hybrid applications

Installation Notes and Tips

Verify the original regulator style, port size, and mounting method before installation. This part uses push-in inlet and outlet connections with clamp mounting, and some listed applications note in-tank use or O-ring requirements. Confirm vehicle-specific fuel tank configuration for Toyota Prius, Corolla, C-HR, Lexus NX300h, and related models before replacement.

• Fits 2021-2022 Toyota Corolla, N/A
• Fits 2005-2017 Toyota Corolla, N/A
• Fits 2021-2022 Toyota Prius, N/A
• Fits 2010-2017 Toyota Prius, N/A
• Fits 2019-2022 Toyota Prius AWD-e, N/A
• Fits 2021-2022 Toyota Prius Prime, N/A
• Fits 2017 Toyota Prius Prime, N/A
• Fits 2021 Lexus NX300h, N/A
• Fits 2015-2017 Lexus NX300h, N/A
• Fits 2021 Toyota C-HR, N/A
• Fits 2020 Lexus NX300h, N/A, In-Tank Regulator
• Fits 2020 Toyota C-HR, N/A, In-Tank Regulator; Incl.O-Rings
• Fits 2020 Toyota Corolla, N/A, In-Tank Regulator; Incl.O-Rings
• Fits 2020 Toyota Prius, N/A, In-Tank Regulator; Incl.O-Rings
• Fits 2020 Toyota Prius Prime, N/A, In-Tank Regulator; Incl.O-Rings
• Fits 2018-2019 Lexus NX300h, N/A, In Fuel Tank; with O-Ring
• Fits 2018-2019 Toyota C-HR, N/A, In Fuel Tank; with O-Ring
• Fits 2018-2019 Toyota Corolla, N/A, In Fuel Tank; with O-Ring
• Fits 2018-2019 Toyota Highlander, N/A, In Fuel Tank; with O-Ring
• Fits 2018-2019 Toyota Prius, N/A, In Fuel Tank; with O-Ring
• Fits 2018-2019 Toyota Prius C, N/A, In Fuel Tank; with O-Ring
• Fits 2018-2019 Toyota Prius Prime, N/A, In Fuel Tank; with O-Ring
• Fits 2018 Lexus ES300h, N/A, In Fuel Tank; with O-Ring
• Fits 2018 Toyota Avalon, N/A, In Fuel Tank; with O-Ring
• Fits 2018 Toyota Corolla iM, N/A, In Fuel Tank; with O-Ring
• Fits 2018 Toyota RAV4, N/A, In Fuel Tank; with O-Ring
• Fits 2018 Toyota Yaris, N/A, In Fuel Tank; with O-Ring
• Fits 2011-2017 Lexus CT200h, N/A
• Fits 2013-2017 Lexus ES300h, N/A
• Fits 2013-2017 Toyota Avalon, N/A
• Fits 2007-2017 Toyota Camry, N/A
• Fits 2017 Toyota Corolla iM, N/A
• Fits 2008-2017 Toyota Highlander, N/A
• Fits 2012-2017 Toyota Prius C, N/A
• Fits 2012-2017 Toyota Prius V, N/A
• Fits 2006-2017 Toyota RAV4, N/A
• Fits 2007-2017 Toyota Yaris, N/A
• Fits 2016 Scion iM, N/A
• Fits 2011-2016 Scion tC, N/A
• Fits 2012-2015 Scion iQ, N/A
• Fits 2008-2015 Scion xB, N/A
• Fits 2012-2015 Toyota Prius Plug-In, N/A
• Fits 2009-2015 Toyota Venza, N/A
• Fits 2008-2014 Scion xD, N/A
• Fits 2005-2013 Toyota Matrix, N/A
• Fits 2007-2013 Toyota Sienna, N/A
• Fits 2010-2012 Lexus HS250h, N/A
• Fits 2010-2011 Honda CR-V, N/A, Japan Built; In Fuel Tank
• Fits 2007-2010 Lexus RX350, N/A
• Fits 2007-2009 Honda CR-V, N/A, Fuel Injection Pressure Regulator fits in the fuel tank.
• Fits 2007 Honda Fit, N/A, Fuel Injection Pressure Regulator fits in the fuel tank.
• Fits 2006-2007 Lexus GS430, N/A

Quality Assurance

Delphi builds this regulator using OE heritage and knowledge developed through long-term supplier experience with major automakers. That background supports accurate fuel pressure control and application-specific fitment across Toyota, Lexus, Scion, and select Honda fuel systems.