FX-S (Bosch Rail Mount Replacement) XR6 BA-FG

The FX-S (Bosch Rail Mount Replacement) XR6 BA-FG (Part Number GFB-8051FX-S) is a high-performance, direct-fit upgrade designed to replace factory Bosch clip-in fuel pressure regulators. Engineered by Go Fast Bits (GFB), this unit delivers more than double the flow of the factory regulator, making it ideal for upgraded fuel pumps and high-performance turbo setups.

Designed as a drop-in solution, the FX-S allows you to retain your factory fuel rail while significantly improving fuel system performance. With adjustable base pressure and compatibility with petrol, ethanol (E85), and methanol, this regulator is perfect for serious street and motorsport builds.

⚙️ Key Features

• GFB Part Number: 8051FX-S
• Direct replacement for Bosch clip-in fuel pressure regulators
• More than double the flow of factory regulator
• Adjustable pressure range: 1.4–5 Bar (20–72 PSI)
• Integrated 1/8″ NPT port for fuel pressure gauge
• Compatible with petrol, E85, and methanol fuels
• Double reinforced diaphragm with burst strength exceeding 500 PSI
• Teflon co-polymer seat with stainless valve for improved sealing
• O-ring sealed adjustment platform prevents vacuum/boost leaks
• Fully serviceable design

🚗 Fitment & Application

Direct fit for Bosch rail mount applications, including:

• Ford XR6 Turbo BA–BF (4.0L)
• Ford XR6 Turbo FG (4.0L)

(Suitable for vehicles using Bosch clip-in fuel pressure regulators)

🛠️ Installation Notes

• Direct clip-in replacement for factory Bosch regulator
• No need to replace the factory fuel rail
• Set base pressure according to your fuel system requirements
• Use the 1/8″ NPT port to install a fuel pressure gauge
• Check for leaks and confirm correct pressure after installation

🔩 Specifications

• Type: Fuel Pressure Regulator (Bosch Rail Mount Replacement)
• Pressure Range: 1.4–5 Bar (20–72 PSI)
• Gauge Port: 1/8″ NPT
• Fuel Compatibility: Petrol, E85, Methanol
• Diaphragm Strength: 500+ PSI burst rating
• GFB Part Number: 8051FX-S
• Application: EFI fuel systems, turbocharged engines