SKU: 3971559334

GFB FX-S Bosch Fuel Pressure Regulator

Sale price$103.50 Regular price$115.00
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Ships within 48 hours · Estimated delivery Jul 14 - Jul 19

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Description

GFB FX-S Bosch Fuel Pressure RegulatorIf 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

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: 3971559334

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Kris
Whiting, US
★★★★★ 5
Good product!
Color: Gold
This is nicer than I expected honestly and a good value for the money. Trims amazing, the shave isn’t as close as a razor but it helps in a pinch! Charging takes forever but then it also runs on that battery for days!
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Reviewed in the United States on April 28, 2026
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Annedis
Houston, US
★★★★★ 5
Versatile trimer
This electric trimmer is very easy to use and, best of all, it includes a great attachment for trimming nose hairs. Everything feels high quality, it doesn’t irritate the skin, and it’s also very powerful.
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Reviewed in the United States on April 17, 2026
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Sydney Ensley
Natrona Heights, US
★★★★★ 5
Very good
Color: Gold
Works great and comes with a cute carry bag.
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Reviewed in the United States on June 2, 2026
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TC
Boise, US
★★★★★ 5
No More Chewbacca Legs!
Color: Gold
Tons of research was done to find the best one for me. READ the instruction booklet and use common sense when using on your bikini area. ( There's ALWAYS that ONE review..) I like this a lot. Recovering from surgery and can't get into the bath for a regular shave, so being able to use this on my legs DRY was a dream! Now that it's warmer out, my legs no longer look like Chewbacca! Lol! Oh! It was already charged so that was great. I like that you can use your usb to charge this. No pain, but again, use your head, don't be digging this into your skin, tread LIGHTLY in sensitive areas.
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Reviewed in the United States on April 15, 2026
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Amazon Customer
Lowell, US
★★★★★ 1
Don’t buy!
Color: Green
I purchased in 2025 and I’ve barely used it. Now it doesn’t even turn on. Very disappointing!
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Reviewed in the United States on June 5, 2026

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