Standard Ignition PR126 Fuel Injection Pressure Regulator

Fuel Pressure Control for Toyota Applications

The Standard Ignition PR126 fuel injection pressure regulator is a gas-system component that helps maintain consistent fuel pressure at the rail. It is listed for 1988-1995 Toyota 4Runner and 1988-1995 Toyota Pickup applications, making it a direct-fit option for common Toyota fuel delivery service work.

Built as a regulator with a straight nipple orientation and a 43 psi operating pressure rating, this part supports stable fuel delivery in the injection system. The PR126 is a practical replacement when diagnosing pressure-related drivability concerns on Toyota 4Runner and Toyota Pickup models.

Key Features

• Fuel injection pressure regulator for gas systems
• Straight nipple orientation for the listed application
• 43 psi operating pressure specification
• Includes caution sheet
• Standard Ignition PR126 replacement part

Detailed Description

Standard Ignition PR126 is a fuel injection pressure regulator used to control fuel pressure within the injection system. For 1988-1995 Toyota 4Runner and 1988-1995 Toyota Pickup vehicles, this regulator helps maintain the pressure level needed for consistent injector performance and proper fuel delivery. If you are searching for a Toyota 4Runner fuel injection pressure regulator or a Toyota Pickup fuel pressure regulator, PR126 is the cataloged match for these gas applications. This part cross-references Gates 21872 for the same application.

Common Issues It Can Address

• Fuel pressure that is too high or too low at the rail
• Hard starting after the vehicle sits
• Rough idle caused by unstable fuel delivery
• Rich or lean running conditions tied to pressure regulation
• Fuel system performance concerns on Toyota 4Runner and Toyota Pickup models

Installation Notes and Tips

Verify the vehicle year and engine fuel system before installation, and confirm the regulator orientation matches the straight nipple design. Inspect related fuel lines, seals, and vacuum connections during service, and relieve fuel system pressure before removing the old component. Use the included caution sheet as a reference during handling and installation.

Quality Assurance

Standard Ignition supplies this regulator as a cataloged replacement part for the listed Toyota applications. The PR126 is built to the stated 43 psi operating pressure specification and is intended for gas fuel systems.