GFB FX-S Bosch Fuel Pressure Regulator

SKU: GFB8051

Fuel Pressure Regulators

GFB Fuel Pressure Regulators

GO Fast Bits

GFB FX-S Bosch Fuel Pressure Regulator

SKU: GFB8051

Fuel Pressure Regulators

GFB Fuel Pressure Regulators

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Description

If you increase the performance of your engine, you need to ensure your fuel system can deliver the goods or you're going to have a bad day! Upgrading the fuel pump is the first step, but doing this alone will usually result in excessive fuel pressure, especially at idle. This is because the factory Bosch regulators typically don't flow enough to support larger fuel pumps, especially with turbo E85 setups that demand high fuel flow rates.?, Rather than replacing the entire fuel rail, or using an adaptor with a separate fuel pressure regulator, simply clipping in the FX-S 8051 will allow you to run a much larger pump setup even with the factory rail. And if you need to adjust the fuel pressure, that's no problem - unlike the fixed-pressure Bosch regulators, the FX-S can be adjusted from 1.4bar to 5bar. Like all GFB FX regulators, the FX-S 8051 is compatible with pump gas, Ethanol, or Methanol, and also incorporates a soft Teflon valve seat (rather than metal on metal) that will always positively seal and hold fuel pressure on shut down for reliable engine startups. The double layer diaphragm has twice the reinforcing material of the single layer type used in most regulators, and as a result the burst strength exceeds 1000psi!, The 1/8" NPT port can be used for a fuel pressure gauge or electronic pressure sensor, or it can simply be plugged using the port plug provided.

Application Summary

Universal

Part Type

Fuel Pressure Regulator

Data: v4.2 - Upd: 2026-10-10 19:07:39

Features

Direct fit replacement for Bosch clip in regulators • More than double the flow of the factory regulator, allows increased pump capacity without having to replace the factory fuel rail • Gasoline, ethanol, and methanol compatible

Specifications

Product Attributes - UPC: 9328022002201
Product Attributes - Brand: Go Fast Bits
Product Attributes - Notes: Bosch rail mount replacement regulator.
Product Attributes - Quantity: Sold individually.
Product Attributes - Part Type: Fuel Pressure Regulators
Product Attributes - Gauge Port: Yes
Product Attributes - Rebuildable: Yes
Product Attributes - Product Line: Go Fast Bits FX-S Fuel Pressure Regulators
Product Attributes - Inlet Quantity: 1
Product Attributes - Outlet Quantity: 1
Product Attributes - Regulator Style: Return
Product Attributes - Inlet Attachment: Female threads
Product Attributes - Regulator Finish: Black anodized
Product Attributes - Fittings Included: Yes
Product Attributes - Outlet Attachment: Push-on
Product Attributes - Return Attachment: Female threads
Product Attributes - Regulator Location: Fuel rail mount
Product Attributes - Regulator Material: Billet aluminum
Product Attributes - Return Fitting Size: 1/8 in. NPT
Product Attributes - Regulator Inlet Size: 1/8 in. NPT
Product Attributes - Regulator Outlet Size: 1/8 in. NPT
Product Attributes - Regulator Pressure (psi): 20-72
Product Attributes - Mounting Bracket Included: No
Product Attributes - Manufacturer's Part Number: 8051
Product Attributes - Boost/Vacuum Reference Port: No

Reference Information

Brand Name/s	GO Fast Bits
StreetFX SKU	gfb8051
SFX Item ID	4415646
Supplier Item Code	4415646
Manufacturer SKU	8051
Manufacturer UPC	9328022002201
Alternative References	gfs-8051