SKU: 9633336399

FX-S Bosch Replacement Fuel Pressure Regulator 8051

Sale price$123.75 Regular price$137.50
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Description

FX-S Bosch Replacement Fuel Pressure Regulator 8051GO FAST BITS FX S 8051 BOSCH REPLACEMENT FUEL PRESSURE REGULATORS FEATURE 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 Double layer double reinforced diaphragms with a burst strength exceeding 1000psi Teflon co polymer seat with stainless valve to retain fuel pressure

GO FAST BITS FX - S 8051 BOSCH REPLACEMENT FUEL PRESSURE REGULATORS FEATURE

  • 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 

  • Double layer/double reinforced diaphragms with a burst strength exceeding 1000psi

  • Teflon co-polymer seat with stainless valve to retain fuel pressure longer after shut down

  • Spring pre-load adjustment platform is o-ring sealed and does not leak vacuum/boost

  • Static pressures adjustable from 1.4-5bar (20-72psi – subject to pump flow and factory return line restriction)

  • Completely serviceable

GFB’s popular and compact FX-S Fuel Pressure Regulator is now also available as a direct drop-in replacement for the common Bosch regulators that clip into the fuel rail. 

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.

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
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  • Delivery to the USA:
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 9633336399

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linda kane
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★★★★★ 5
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Color: Cannoli, Size: Large
Great toy
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Reviewed in the United States on February 2, 2026
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Yurui
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Color: Baguette, Size: Large, Color: Baguette, Size: Large
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Reviewed in the United States on May 7, 2026
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anthony f. lopinto
Boise, US
★★★★★ 5
Good product
Color: Cannoli, Size: Large
Great quality and awesome looking. Easy install.
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Reviewed in the United States on March 28, 2026
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Christine J
Natrona Heights, US
★★★★★ 5
Love this for our dog
Color: 5 in 1, Size: Small
These are wonderful. They're made well and are the perfect size for small and medium dogs. My yorkie loves them and they're a fun toy to fetch. We love the cannoli and eclair the best since we make those desserts in real life. Packaged well and shipped fast.
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Reviewed in the United States on April 2, 2026
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Michele
Boise, US
★★★★★ 4
Fun dog toy
Color: 5 in 1, Size: Small
Cute dog toys but don’t last long- my dogs are only 11 pounds
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Reviewed in the United States on January 22, 2026

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