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
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Exchange/Return Notes
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SKU: 9633336399

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4.8 ★★★★★
Based on 24 reviews
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nappydrew
Port Orchard, US
★★★★★ 5
🦴 The Ultimate Distraction: A Must-Have for Power Chewers!
Flavor Name: Bacon, Size: 1 Count (Pack of 1)
Finding a chew toy that can withstand my 70-pound "House Hippo" (an expert-level destructor) for more than ten minutes felt impossible, until we discovered these stuffed shin bones. These treats are an absolute game-changer for long-lasting entertainment, durability, and distraction. Exceptional Durability and Value: The bone itself is thick, natural, and surprisingly sturdy. Unlike processed chews that crumble or get demolished instantly, these last for days of chewing. The value is tremendous because they provide two phases of entertainment: first, the intense effort of licking out the filling, and second, the satisfying work of chewing the bone itself afterward. Irresistible Appeal (Peanut Butter/Cheese Filling): The filling is the secret weapon! My dog goes absolutely wild for the flavor. The filling is firmly packed inside, which means he has to spend a significant amount of time actively working to get every last bit. This intense focus buys me hours of peace and quiet, which is invaluable. On top of that, they offer good nutrition! Less Mess, More Fun: I appreciate that these bones are relatively neat. They don't leave greasy residue all over the carpet like some marrow bones, and the durable exterior means minimal splintering (though, as with any bone, supervision is required). They satisfy my dog's natural chewing instinct while promoting dental health by scraping against his teeth as he works the chew. Final Verdict: If you have an aggressive chewer who needs a serious, long-lasting treat that is both entertaining and structurally sound, look no further. These stuffed bones deliver on their promise and are now a staple in our dog treat rotation!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 4, 2025
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Verified Purchase
Mandi Mills
Draper, US
★★★★★ 5
Still Going Strong Months Later
Flavor Name: Bacon, Size: 1 Count (Pack of 1)
These stuffed chew bones have been amazing for my dogs. Even months later, they’re still happily chewing on them, and that says a lot since they’re aggressive chewers. The bacon and cheese filling keeps them interested, and the bones themselves are durable enough to handle their chewing without falling apart. After all this time, the chews are still holding up and my dogs love them every time. They keep my dogs busy, help with dental care, and are definitely worth having on hand for large dogs who love to chew. Durable, tasty, and long-lasting—can’t ask for more.
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Reviewed in the United States on February 10, 2026
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Christy
Grantham, US
★★★★★ 5
Long lasting
Flavor Name: Bacon, Size: 1 Count (Pack of 1)
These are the longest lasting bones I have ever purchased. But if you don't want a heavy bone that makes noise when dropped this is not for you. They go sliding across my floor as they are being tossed around and played with. But they love them and they have lasted for months. I am glad they are not as expensive as others. To many things are over priced. Dogs love them.
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Reviewed in the United States on May 14, 2026
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Amazon Customer
West Palm Beach, US
★★★★★ 4
Arrived on time and as described
Flavor Name: Bacon, Size: 1 Count (Pack of 1)
It is perfect for my 120 lb dog. He did give up after 6 hours of trying to get the “stuffing” out. The bone held up to his chewing. He loved it!
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Reviewed in the United States on January 14, 2026
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Leanne Elizabeth
Alexandria, US
★★★★★ 3
Be Very Cautious!
Flavor Name: Bacon, Size: 1 Count (Pack of 1)
Splinters easily if you have an aggressive chewer! Although very tasty, within hours of a dog (lab/shepherd mix) I care for excitedly indulging in it, I was picking pieces he easily could have choked on (or worse). The large end of the bone splintered/cracked quicker than other bones he’s had which makes it very dangerous. Value for money is iffy due to that. Bone is a good price but not when it endangers the health of an animal. I gave it 3 stars because it had no smell, dog enjoyed the flavor, but definitely be cautious with this bone!
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Reviewed in the United States on February 16, 2026

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