Part No: 8051

FX-S Fuel Pressure Regulator (Bosch Rail Mount Replacement)

Warning

Important! Fuel systems operate under considerable pressure both during operation and when powered down. Extreme caution must be taken when working with fuels as they are extremely flammable and dangerous.

Legal Disclaimer:

Any modification of a vehicle's fuel system is accompanied by a certain level of risk associated with combustible materials and methods of ignition.

Go Fast Bits accept no responsibility for any damage to property, or personal injury, which occurs due to improper installation, use, or adjustment, or failure to adequately address the risks associated with the use of this product.

GFB products are engineered for best performance, however incorrect use or modification of factory systems may cause serious damage to or reduce the longevity of the engine.

This product is intended for racing use only, and it is the owner's responsibility to be aware of the legalities of fitting this product in their state/territory regarding emissions and modifications.

Installation Recommendation:
The installation of this product is a modification of the vehicle's fuel system, which requires in-depth training and knowledge of automotive systems and repair methods.

Due to the hazardous nature of installing fuel system components, Go Fast Bits recommend that this product is installed only by a qualified automotive technician.

Installation of this product involves handling of combustible materials. Ensure installation takes place in a well-ventilated area free from sources of ignition, with an approved fire extinguisher nearby. Always follow relevant workplace safety procedures including the use of appropriate protective equipment when installing this product

Instructions

8051-instructions.pdf

Specific Product Information

What's Included

1 x fuel regulator
1 x hose barb
1 x 1/8 NPTF socket pressure plug

8051 Specific Features

Direct fit replacement for Bosch clip in regulators (see below for fitment info)
1/8″ NPT gauge port
More than double the flow of the factory regulator, allowing increased pump capacity without having to replace the factory fuel rail
Gasoline, ethanol, and methanol compatible
Static pressures adjustable from 1.4-5bar (20-72psi – subject to pump flow and factory return line restriction)

Product Dimensions

Known vehicle fitments are listed below, but please note that the 8051 is taller than the factory regulator and some of the listed applications may have minor clearance issues due to the added height. The dimensioned drawing below shows a comparison of the 8051 FX-S and the factory Bosch regulator, which should help you identify any clearance concerns before purchasing.

Product Range Information

Features and Benefits

Compact size with high flow
Suitable for Unleaded, Ethanol, Methanol and Diesel fuels
Double layer/double reinforced diaphragms with a burst strength exceeding 500 psi
Teflon co-polymer seat with stainless valve to retain fuel pressure longer after shut down
Fully sealed upper boost/vacuum reference chamber
Static pressures adjustable from 25-80psi (1.75-5.5 BAR)
Multiple body ports allow for a large variety of setup options
Completely serviceable
Spring pre-load adjustment screw is o-ring sealed and does not leak vacuum/boost

FAQ

What sets us apart from the competition?

Well, if you’re looking for an EFI Fuel Pressure Regulator that seals and behaves just like your factory unit but with the added reliability and high flowing capacity you require, then look no further than the FX range.

How have we achieved this?

Our engineers have spent countless hours developing a unique replaceable co-polymer valve seat.

What does this mean?

Conventional aftermarket performance Fuel Pressure Regulators typically utilize a metal-to-metal valve and seat which by nature will not positively hold pressure when your engine is shut down, which can make startup more difficult.

Here at GFB, we have incorporated a softer, more compliant yet resilient material for the valve seat, which will always positively seal and hold fuel pressure on shut down, designed to give factory-like sealing and reliable startup, as well as superior fuel resistance suitable for Unleaded, Ethanol, Methanol, and Diesel fuels.

We also use a double layer diaphragm, which means we have twice the reinforcing material, and as a result the burst strength exceeds 500psi!

The multiple inlet/gauge ports also allow for a wide range of fuel system setups beyond the usual inlet/outlet, including parallel fuel rail or returnless “deadhead” systems. The two gauge ports allow you to run a mechanical fuel pressure gauge AND an ECU fuel pressure sensor if you want to.

Tech Support and Warranty

Warranty Information

We offer lifetime warranty on all of our products, so provided that there is a genuine manufacturing or assembly fault with your product – please send us some photos of what’s going on so that we’d be able to assist with either replacement parts or components. It’s also worth noting that we our lifetime warranty does not extend to those who have purchased our parts second hand.

Contact Us: https://gfb.com.au/contact-us/

If you are still having some trouble, then the next steps are to contact our Tech Support team. Videos, photos and a clear description of the symptoms you are experiencing would give us a better understanding of what is going on and how to resolve this issue as quickly as possible. Remember, we can’t see your car or product, so our diagnosis is only as good as the information you provide us.

Downloads & Installation