Go Fast Bits FX-D Fuel Pressure Regulator with -8AN Ports

The Go Fast Bits (GFB) FX-D Fuel Pressure Regulator is the ultimate solution for high-performance fuel systems, delivering massive flow capacity, precision control, and OEM-like reliability. Designed for serious builds, the FX-D supports everything from pump petrol/gasoline to ethanol, methanol, and diesel, making it perfect for street or race applications.

Equipped with 2x -8AN inlet ports, 2x 1/8” NPT gauge/sensor ports, and 1x -8AN return port, the FX-D flows an incredible 1800 LPH at 25 PSI. The 1:1 fuel pressure rise rate ensures consistent pressure under boost, while the adjustable static range of 25–80 PSI offers full tuning flexibility for a wide variety of setups.

Engineered with a replaceable Teflon co-polymer seat and spherical stainless valve, the FX-D retains fuel pressure after shutdown, ensuring easier starts compared to conventional regulators. The double-layer reinforced diaphragms withstand burst pressures exceeding 500 PSI, providing exceptional durability and safety.

Like the rest of the FX range, the FX-D is completely serviceable and features multiple body ports for versatile setups, including parallel fuel rails or returnless deadhead systems. With dual gauge/sensor ports, you can run both a mechanical gauge and ECU sensor simultaneously.

Key Features:

• High-flow EFI regulator — up to 1800 LPH @ 25 PSI

• 2x -8AN inlets, 1x -8AN return, 2x 1/8” NPT gauge/sensor ports

• 1:1 fuel pressure rise rate for boosted applications

• Adjustable static fuel pressure: 25–80 PSI

• Teflon co-polymer seat & stainless valve — retains pressure after shutdown

• Double-layer reinforced diaphragms with >500 PSI burst strength

• Compatible with unleaded, ethanol, methanol, and diesel

• Completely serviceable for long-term reliability

• Supports a wide variety of setups: parallel rails, returnless, or traditional

• Dual gauge ports allow mechanical gauge and ECU sensor use