Standard Ignition PR21 Fuel Injection Pressure Regulator

Reliable Fuel Injection Pressure Regulator for Jeep Models

The Standard Ignition PR21 fuel injection pressure regulator is designed to maintain consistent fuel pressure for optimal engine performance. Specifically engineered for Jeep Cherokee, Comanche, and Wagoneer models, this new, cast iron regulator ensures precise fuel delivery at 41 PSI operating pressure.

Key Features of the Standard Ignition PR21

• Compatible with Jeep Cherokee, Comanche, and Wagoneer vehicles
• New, cast iron construction with steel regulator material for durability
• Return type fuel injection pressure regulator with a fixed 41 PSI operating pressure
• Straight nipple orientation with two inlets and one outlet for efficient fuel flow
• Yellow dichromium finish for corrosion resistance
• Includes instruction and caution sheets for proper installation
• Designed for gasoline fuel systems

Detailed Product Description

The Standard Ignition PR21 fuel injection pressure regulator is a non-adjustable, return-type regulator that controls fuel pressure within the injection system to ensure consistent engine operation. Constructed from cast iron with a steel regulator component, it offers reliable performance and longevity. The regulator’s 41 PSI operating pressure is calibrated to meet the fuel delivery requirements of Jeep Cherokee, Comanche, and Wagoneer models. Its straight nipple orientation and dual inlet design facilitate straightforward installation and efficient fuel flow management. The yellow dichromium finish provides added protection against corrosion, extending the part’s service life.

Common Applications and Issues Addressed

• Maintains stable fuel pressure to prevent engine hesitation or stalling
• Prevents fuel leaks caused by worn or damaged regulators
• Ensures proper fuel return flow to avoid pressure buildup in the fuel system
• Helps resolve rough idling or poor acceleration related to fuel pressure inconsistencies
• Supports optimal fuel injection system performance in Jeep Cherokee, Comanche, and Wagoneer vehicles

Installation Notes and Tips

• Refer to the included instruction and caution sheets before installation
• Ensure fuel system is depressurized prior to removal of the old regulator
• Check all fuel lines and connections for wear or damage during installation
• Verify correct nipple orientation and secure fittings to prevent leaks
• Test fuel pressure after installation to confirm proper operation

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications. The PR21 fuel injection pressure regulator is a new component backed by quality control standards to ensure reliable performance. While specific warranty details may vary, Standard Ignition typically offers coverage against defects in materials and workmanship. Consult product documentation or authorized sources for exact warranty terms.