Standard Ignition PR131 Fuel Injection Pressure Regulator

Fuel Pressure Control for GM Applications

Standard Ignition PR131 is a fuel injection pressure regulator diaphragm kit for gasoline applications that need stable fuel delivery and consistent engine performance. It is application-specific for proper fit and form, with a direct-mount design and a returnless regulator layout.

Key Features

• Adjustable fuel pressure regulator design
• Direct mounting for application-specific fit
• Returnless fuel system configuration
• 10 psi operating pressure
• Rubber regulator material with black finish
• Includes diaphragm assembly, gasket, foam rings, and alignment rods
• Standard Ignition PR131 for gasoline fuel systems

Detailed Description

Built for fuel injection pressure regulator service, Standard Ignition PR131 helps maintain the pressure control needed for proper fuel delivery. The robust engineering design is focused on reducing leakage risk, while the precision-engineered construction supports consistent engine operation. This part cross-references Gates (e.g., 21025, 21732) for the same application. Common fitment includes Chevrolet Astro, Chevrolet S10, GMC Safari, and GMC Jimmy applications across multiple model years.

What It Helps Address

• Fuel pressure that is too high or too low
• Hard starting caused by unstable fuel delivery
• Rough idle related to regulator diaphragm wear
• Fuel leakage at the regulator assembly
• Driveability issues tied to inconsistent injector pressure

Installation Notes

Use this part on gasoline fuel systems with a direct-mount, returnless regulator setup. Verify the vehicle’s fuel system configuration and match the application-specific fit before installation. Standard Ignition PR131 is listed for a wide range of Chevrolet, GMC, Cadillac, Pontiac, Buick, Oldsmobile, and Isuzu models; confirm the exact year and model, such as Chevrolet S10, GMC Jimmy, or Chevrolet Astro, before service.

Quality Assurance

Standard Ignition manufactures this regulator with control over the production process from components through finished product. The design emphasizes proper fit, form, and leakage resistance for dependable fuel system service.