HomeAir and Fuel Delivery > Fuel Injection System and Related ComponentsDelphi FP10523 Fuel Injection Pressure Regulator
Part #: FP10523

Delphi FP10523 Fuel Injection Pressure Regulator

5 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Lexus, LS400 and SC400
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Reliable Fuel Injection Pressure Regulator for Lexus LS400 and SC400

The Delphi FP10523 fuel injection pressure regulator is designed to maintain consistent fuel pressure in your Lexus LS400 or SC400. Crafted from durable metal, this non-adjustable regulator ensures precise fuel delivery for optimal engine performance.

Key Features of Delphi FP10523 Fuel Injection Pressure Regulator

  • Constructed from high-quality metal for durability and longevity
  • Compatible with Lexus LS400 and SC400 models
  • Non-adjustable design for consistent fuel pressure regulation
  • Threaded inlet port with a diameter of 0.47 inches (12.0 mm)
  • Hose outlet port with a diameter of 0.31 inches (8.0 mm)
  • Single inlet and outlet ports for streamlined fuel flow
  • Clamp mounting type for secure installation
  • System pressure rating of 44 psi

Detailed Description of the Delphi FP10523

The Delphi FP10523 fuel injection pressure regulator is engineered to provide stable fuel pressure within the fuel injection system of Lexus LS400 and SC400 vehicles. Its metal construction offers resistance to wear and corrosion, ensuring reliable operation over time. The regulator features a threaded inlet port measuring 0.47 inches (12.0 mm) in diameter and a hose-type outlet port of 0.31 inches (8.0 mm), facilitating proper fuel flow and connection compatibility. Designed without adjustability, this regulator maintains a fixed system pressure of 44 psi, which is critical for the precise fuel metering required by these Lexus models. The clamp mounting type allows for secure and straightforward installation in the fuel system.

Common Applications and Issues Addressed

  • Maintains consistent fuel pressure to prevent engine hesitation or stalling
  • Prevents fuel leaks by ensuring secure inlet and outlet connections
  • Helps avoid poor fuel economy caused by incorrect fuel pressure
  • Reduces risk of engine misfires related to fuel delivery inconsistencies
  • Supports smooth acceleration and overall engine performance in Lexus LS400 and SC400

Installation Notes and Tips

  • Ensure compatibility with Lexus LS400 and SC400 before installation
  • Use appropriate tools to secure the clamp mounting and avoid damage to the regulator
  • Inspect inlet and outlet ports for debris or damage prior to installation
  • Verify fuel system pressure after installation to confirm proper operation
  • Consult vehicle service manual for specific installation procedures and torque specifications

Quality Assurance and Warranty Information

Delphi manufactures the FP10523 fuel injection pressure regulator to meet OEM standards for fit, form, and function. The metal construction and precise engineering contribute to its reliability in fuel system applications. While specific warranty details may vary, Delphi products typically come with a limited warranty covering defects in materials and workmanship. Refer to Delphi’s official warranty policy for complete information.

BrandDelphi
Part NumberFP10523
AdjustableNo
Gauge PortNo
Inlet Port Diameter0.47
Inlet Port Diameter12.0
Inlet Quantity1
Inlet TypeThreaded
MaterialMetal
MaterialMetal
Mounting TypeClamp
Outlet Port Diameter0.31
Outlet Port Diameter8.0
Outlet Quantity1
Outlet TypeHose
System Pressure44

This part fits 5 vehicles. Search below:

YearMakeModelSubmodelPositionNotes
1997LexusLS400BaseN/A
1997LexusSC400N/A
1996LexusLS400BaseN/A
1996LexusSC400N/A
1995LexusLS400BaseN/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

158-11662303323280-5002023280-590155G1234PR272PR4053

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.