Airtex 5G1543 Fuel Injection Pressure Regulator

The Airtex 5G1543 is a direct-fit replacement fuel injection pressure regulator designed to restore proper fuel system pressure and ensure optimal engine performance. The fuel pressure regulator maintains the correct fuel pressure delivered to the fuel injectors, helping to prevent hard starts, rough idling, poor fuel economy, and hesitation under acceleration.

Airtex engineers this regulator to meet or exceed OEM specifications, providing a precise pressure set point and consistent regulation across all engine operating conditions. Constructed with durable materials and a high-quality diaphragm, the 5G1543 is built to withstand the heat and chemical demands of modern fuel injection systems.

Key Features:

• Direct OEM replacement — no modifications required for installation
• Maintains consistent fuel rail pressure for proper injector operation
• Built to meet or exceed original equipment specifications
• Durable construction with quality diaphragm and housing materials
• Helps resolve symptoms such as hard starts, rough idle, and poor fuel economy
• Manufactured by Airtex Automotive Division, a trusted name in fuel system components

The Airtex 5G1543 fuel injection pressure regulator is a reliable, cost-effective solution for restoring proper fuel delivery in affected vehicles. It is designed for straightforward installation using standard hand tools.