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

SKU: 8051
By GFB
$228.00 USD
Shipping calculated at checkout.

1 in stock
Description
Takes over where the factory regulator stops

  • 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.

Kit includes:

  • 1 x 8051

Suitable for:

  • Alfa Romeo 145 930 2.0 16V T.Spark Front Wheel Drive (FWD) (1995 to 2001)
  • Alfa Romeo 155 167 2.0 16V T.Spark Front Wheel Drive (FWD) (1995 to 1997)
  • Alfa Romeo 156 Type 932 1.6 16V T.Spark Front Wheel Drive (FWD) (1997 to 2005)
  • Alfa Romeo 156 Type 932 2.0 16V T.Spark Front Wheel Drive (FWD) (1997 to 2000)
  • Alfa Romeo 156 Type 932 1.6 16V T.Spark Front Wheel Drive (FWD) (2000 to 2006)
  • Alfa Romeo 166 Type 936 2.0 V6 Front Wheel Drive (FWD) (1998 to 2000)
  • Alfa Romeo GTV 916C_ 2.0 16V T.Spark Front Wheel Drive (FWD) (1995 to 2005)
  • Alfa Romeo Spider 916S_ 2.0 16V T.Spark Front Wheel Drive (FWD) (1995 to 2005)
  • Alfa Romeo Spider 916S_ 2.0 16V T.Spark Front Wheel Drive (FWD) (1998 to 2000)
  • Audi 100 C4 2.0 E Front Wheel Drive (FWD) (1990 to 1994)
  • Audi 100 C4 2.0 E quattro quattro (1990 to 1992)
  • Audi 100 C4 2.0 E quattro quattro (1990 to 1992)
  • Audi 80 B4 2.0 E Front Wheel Drive (FWD) (1991 to 1994)
  • Audi 80 B4 2.0 E quattro quattro (1991 to 1994)
  • Audi A2 8Z0 1.6 FSI Front Wheel Drive (FWD) (2002 to 2005)
  • Audi A3 MK1 8L 1.6 Front Wheel Drive (FWD) (1996 to 2003)
  • Audi A3 MK1 8L 1.8 T Front Wheel Drive (FWD) (1996 to 2003)
  • Audi A3 MK1 8L 1.8 T quattro quattro (1996 to 2003)
  • Audi A3 MK1 8L 1.8 T quattro quattro (1998 to 2003)
  • Audi A3 MK1 8L S3 quattro quattro (1999 to 2002)
  • Audi A3 MK1 8L S3 quattro quattro (2001 to 2003)
  • Audi A4 B5 1.8 T Front Wheel Drive (FWD) (1995 to 2000)
  • Audi A4 B5 1.8 T Front Wheel Drive (FWD) (1996 to 2001)
  • Audi A4 B5 1.8 T Front Wheel Drive (FWD) (1997 to 2000)
  • Audi A4 B5 1.8 T Front Wheel Drive (FWD) (1997 to 2001)
  • Audi A4 B6 Saloon / Limousine 1.8 T Front Wheel Drive (FWD) (2000 to 2002)
  • Audi A4 B6 Avant 1.8 T Front Wheel Drive (FWD) (2001 to 2002)
  • Audi A4 B6 Saloon / Limousine 1.8 T Front Wheel Drive (FWD) (2002 to 2004)
  • Audi A4 B6 Avant 1.8 T Front Wheel Drive (FWD) (2002 to 2004)
  • Audi A4 B6 & B7 Cabriolet 1.8 T Front Wheel Drive (FWD) (2002 to 2005)
  • Audi A6 C4 2.0 Front Wheel Drive (FWD) (1994 to 1997)
  • Audi A6 C4 2.0 Front Wheel Drive (FWD) (1994 to 1997)
  • Audi Cabriolet B4 2.0 E Front Wheel Drive (FWD) (1993 to 1998)
  • Audi Coupe 89, 8B 2.0 Front Wheel Drive (FWD) (1989 to 1996)
  • Audi TT MK1 Coupé 8N 1.8 T Front Wheel Drive (FWD) (1998 to 2006)
  • Audi TT MK1 Coupé 8N 1.8 T quattro quattro (1998 to 2006)
  • Audi TT MK1 Roadster 8N 1.8 T Front Wheel Drive (FWD) (1999 to 2006)
  • Audi TT MK1 Roadster 8N 1.8 T quattro quattro (1999 to 2006)
  • Audi TT MK1 Roadster 8N 1.8 T quattro quattro (2000 to 2006)
  • Audi TT MK1 Coupé 8N 1.8 T Front Wheel Drive (FWD) (2002 to 2006)
  • Audi TT MK1 Coupé 8N 1.8 T Front Wheel Drive (FWD) (2005 to 2006)
  • Audi TT MK1 Roadster 8N 1.8 T quattro quattro (2005 to 2006)
  • Holden Commodore VL 3.0 EFI Turbo Rear Wheel Drive (RWD) (1986 to 1988)
  • Holden Commodore VL 3.0 EFI Turbo Rear Wheel Drive (RWD) (1986 to 1988)
  • Mazda 3 BK 2.3 MPS Front Wheel Drive (FWD) (2006 to 2009)
  • Mazda 3 BL 2.3 MPS Turbo Front Wheel Drive (FWD) (2009 to 2013)
  • Mazda 6 GG 2.3 MPS Turbo All-wheel Drive (AWD) (2005 to 2007)
  • Mazda CX-7 ER 2.3 MZR DiSI Turbo AWD All-wheel Drive (AWD) (2006 and later)
  • Mazda MX-5 MK2 (NB) 1.8i Turbo Rear Wheel Drive (RWD) (2002 to 2005)
  • Mitsubishi 3000 GT Z16A 3.0i 24V 4WD All-wheel Drive (AWD) (1992 to 1999)
  • Mitsubishi Colt RG 1.5 Turbo Front Wheel Drive (FWD) (2006 to 2009)
  • Mitsubishi Colt MK VI 1.5 Turbo Front Wheel Drive (FWD) (2006 to 2012)
  • Mitsubishi Galant HJ 2.0 V6 24V Front Wheel Drive (FWD) (1992 to 1996)
  • Mitsubishi GTO 3.0 AWD All-wheel Drive (AWD) (1989 to 1996)
  • Mitsubishi GTO 3.0 AWD All-wheel Drive (AWD) (1992 to 1996)
  • Mitsubishi GTO 3.0 AWD All-wheel Drive (AWD) (1996 to 2000)
  • Mitsubishi Lancer MK5 1.8i Turbo AWD All-wheel Drive (AWD) (1992 to 1996)
  • Mitsubishi Lancer Evolution 2.0 Evo I All-wheel Drive (AWD) (1992 to 1994)
  • Mitsubishi Lancer Evolution 2.0 Evo II All-wheel Drive (AWD) (1994 to 1995)
  • Mitsubishi Lancer Evolution 2.0 Evo III All-wheel Drive (AWD) (1995 to 1996)
  • Mitsubishi Starion A18_A 2.0 Turbo ECi Rear Wheel Drive (RWD) (1982 to 1985)
  • Mitsubishi Starion A18_A 2.0 Turbo ECi Rear Wheel Drive (RWD) (1985 to 1987)
  • Nissan 180 SX S13 1.8 Turbo II Rear Wheel Drive (RWD) (1989 to 1992)
  • Nissan 180 SX S13 2.0 Turbo Rear Wheel Drive (RWD) (1991 to 1994)
  • Nissan 200 SX S14 2.0i 16V Turbo Rear Wheel Drive (RWD) (1993 to 1999)
  • Nissan 300 ZX Z32 3.0 Twin Turbo Rear Wheel Drive (RWD) (1990 to 1995)
  • Nissan 300 ZX Z32 3.0 Twin Turbo Rear Wheel Drive (RWD) (1990 to 1995)
  • Nissan GT-R R35 3.8 V6 All-wheel Drive (AWD) (2009 to 2011)
  • Nissan GT-R R35 3.8 V6 All-wheel Drive (AWD) (2011 and later)
  • Nissan GT-R R35 3.8 V6 All-wheel Drive (AWD) (2012 and later)
  • Nissan Pulsar N14 2.0 GTI-R 4x4 All-wheel Drive (AWD) (1990 to 1995)
  • Nissan Skyline R32 2.0 Turbo 4x4 GTS-4 All-wheel Drive (AWD) (1989 to 1993)
  • Nissan Skyline R32 2.0 Turbo 4x4 GTS-4 All-wheel Drive (AWD) (1989 to 1993)
  • Nissan Skyline R32 2.0 Turbo GTS-T Rear Wheel Drive (RWD) (1989 to 1993)
  • Nissan Skyline R32 2.0 Turbo GTS-T Rear Wheel Drive (RWD) (1989 to 1993)
  • Nissan Skyline R33 2.5 GTS-25t Rear Wheel Drive (RWD) (1994 to 2000)
  • Nissan Skyline R34 2.5 Turbo GTS-T Rear Wheel Drive (RWD) (1998 to 2006)
  • Seat Ibiza MK3 1.8 T 20V Cupra Front Wheel Drive (FWD) (2000 to 2002)
  • Seat Ibiza MK4 1.8 T FR Front Wheel Drive (FWD) (2003 to 2008)
  • Seat Ibiza MK4 1.8 T Cupra Front Wheel Drive (FWD) (2004 to 2008)
  • Seat Leon MK1 1.8 20VT Cupra Front Wheel Drive (FWD) (1999 to 2005)
  • Seat Leon MK1 1.8 T Cupra R Front Wheel Drive (FWD) (2002 to 2005)
  • Seat Leon MK1 1.8 T Cupra R Front Wheel Drive (FWD) (2003 to 2005)
  • Subaru Forester SF 2.0 S Turbo All-wheel Drive (AWD) (1998 to 2001)
  • Subaru Forester SF 2.0 S Turbo All-wheel Drive (AWD) (2001 to 2002)
  • Subaru Forester SG 2.5 All-wheel Drive (AWD) (2003 to 2008)
  • Subaru Forester SG 2.5 XT All-wheel Drive (AWD) (2005 to 2008)
  • Subaru Forester SH 2.5 All-wheel Drive (AWD) (2008 and later)
  • Subaru Forester SH 2.5 All-wheel Drive (AWD) (2009 and later)
  • Subaru Impreza GC 2.0 Turbo GT 4WD All-wheel Drive (AWD) (1994 to 2000)
  • Subaru Impreza GF 2.0i Turbo 4WD All-wheel Drive (AWD) (1994 to 2000)
  • Subaru Impreza GC 2.0 AWD All-wheel Drive (AWD) (1998 to 2000)
  • Subaru Impreza GC 2.0 Turbo GT 4WD All-wheel Drive (AWD) (1998 to 2000)
  • Subaru Impreza GF 2.0 Turbo GT 4WD All-wheel Drive (AWD) (1998 to 2000)
  • Subaru Impreza GD, GG 2.0 WRX Turbo All-wheel Drive (AWD) (2000 to 2004)
  • Subaru Impreza GD, GG 2.0 WRX STi All-wheel Drive (AWD) (2001 to 2004)
  • Subaru Impreza GD, GG 2.0 WRX STi AWD All-wheel Drive (AWD) (2002 to 2005)
  • Subaru Impreza GD 2.0i WRX AWD All-wheel Drive (AWD) (2002 to 2005)
  • Subaru Impreza GD 2.0 AWD All-wheel Drive (AWD) (2005 and later)
  • Subaru Impreza GD 2.5 AWD All-wheel Drive (AWD) (2005 and later)
  • Subaru Impreza GD, GG 2.5 WRX All-wheel Drive (AWD) (2005 to 2006)
  • Subaru Impreza GD, GG 2.5 WRX STi All-wheel Drive (AWD) (2005 to 2006)
  • Subaru Impreza GR 2.5 AWD All-wheel Drive (AWD) (2008 to 2011)
  • Subaru Liberty MK III 2.0 RSK AWD All-wheel Drive (AWD) (2000 to 2003)
  • Subaru Liberty MK III 2.0 AWD All-wheel Drive (AWD) (2002 to 2003)
  • Toyota Celica T180 GT4 2.0 Turbo 4WD All-wheel Drive (AWD) (1989 to 1993)
  • Toyota Celica T200 2.0i Turbo 4WD All-wheel Drive (AWD) (1994 to 1999)
  • Toyota Soarer _Z3_ 2.5 Turbo Rear Wheel Drive (RWD) (1990 to 2000)
  • Toyota Supra JZA80 3.0i BiTurbo Rear Wheel Drive (RWD) (1993 to 2002)
  • Volkswagen Bora 1J6 1.8 T Front Wheel Drive (FWD) (2000 to 2005)
  • Volkswagen Bora 1J6 1.8 T Front Wheel Drive (FWD) (2002 to 2005)
  • Volkswagen Golf MK4 1.8 T GTi Front Wheel Drive (FWD) (1997 to 2005)
  • Volkswagen Golf MK4 1.8 T Front Wheel Drive (FWD) (2000 to 2004)
  • Volkswagen Golf MK4 1.8 T GTI 337 Anniversary Front Wheel Drive (FWD) (2001 to 2005)
  • Volkswagen Passat B5 1.8 T Front Wheel Drive (FWD) (1996 to 2000)
  • Volkswagen Passat B5 1.8 T Front Wheel Drive (FWD) (1997 to 2000)
  • Volkswagen Passat B5.5 1.8 T 20V Front Wheel Drive (FWD) (2000 to 2005)
  • Volkswagen Passat B5.5 1.8 T 20V Front Wheel Drive (FWD) (2000 to 2005)
  • Volkswagen Polo MK4 (9N) 1.8 GTI Front Wheel Drive (FWD) (2005 to 2009)
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Rest of World: Standard delivery charge is £50.00 and delivery times vary according to location.