By-Pass Regulator

The By-Pass Regulator (SKU: QFT30-899) is an essential fuel system component tailored for high-performance and custom fuel injection applications that require precise pressure control. This in-line regulator is ideal for motorsports enthusiasts, engine builders, and performance shops that need stable fuel delivery across a wide pressure range while ensuring reliability.

Constructed from durable aluminum, the regulator features a corrosion-resistant finish that combines blue and natural tones. It includes NPT female thread ports for both inlet and outlet (3/8 in.), along with a dedicated 3/8 in. NPT female return line. The regulator maintains fuel pressure between 4.5 and 9 psi, making it suitable for various applications, including carbureted engines and naturally aspirated EFI systems.

This by-pass regulator is particularly beneficial for street rods, classic car restorations, drag racing platforms, and custom fuel system installations where traditional mechanical regulation is preferred. Its bypass mechanism ensures consistent system pressure regardless of fuel pump output or engine load variations, without the need for external electronic control.