AEM 25-303BK Black Adjustable Fuel Pressure Regulator — Fits 86-93 Acura, 95-98 TL, 88-91 Civic/CRX

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SKU: AEM25-303BK
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About AEM

AEM engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full AEM lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

AEM 25-303BK Adjustable Fuel Pressure Regulator

The AEM 25-303BK Adjustable Fuel Pressure Regulator is engineered to provide precise fuel delivery for high-performance Honda and Acura vehicles. Capable of supporting engines up to 1000 horsepower, this regulator ensures optimal fuel pressure for modified engines, race applications, and demanding driving conditions.

Key Features:

  • High Horsepower Support: Designed to handle fuel flow requirements for engines up to 1000 HP, making it suitable for significant performance upgrades.
  • Interchangeable Discharge Ports: Features AEM's patented interchangeable discharge ports, allowing for fine-tuning of fuel flow to match specific fuel pump characteristics.
  • Versatile Fitting Options: The regulator base is tapped to accept -6 AN or 9/16"x18 fittings, offering flexibility in fuel line connections. A custom barb fitting for the factory fuel hose is also included.
  • Gauge Port: Equipped with a 1/8" NPT port for easy installation of a fuel pressure gauge or sensor, enabling real-time monitoring.
  • Durable Black Finish: The sleek black finish provides a clean aesthetic and robust protection against corrosion and wear.

Vehicle Fitment:

This AEM 25-303BK regulator is specifically designed for a range of Honda and Acura models, including:

  • Acura Integra: 1986-1993 (GS, GS-R, LS, LS Special Edition, RS)
  • Acura TL: 1995-1998 (Base, Premium)
  • Acura Vigor: 1992-1994
  • Acura Legend: 1991-1994
  • Acura NSX: 1991-2001 (Base, T, Alex Zanardi Edition)
  • Honda Civic: 1988-1991
  • Honda CRX: 1988-1991
  • Honda Prelude: 1992-1996

Ensure your engine receives the fuel it needs for peak performance with the AEM 25-303BK. Purchase yours today from GGCRACING!

Vehicle Fitment

Years Make Model Trim
1986-1993 Acura Integra LS
1986-1993 Acura Integra RS
1987-1988 Acura Integra LS Special Edition
1990-1993 Acura Integra GS
1992-1993 Acura Integra GS-R
1991-2001 Acura NSX Base
1995-2002 Acura NSX T
1999 Acura NSX Alex Zanardi Edition
1995-1998 Acura TL Premium
1992-1994 Acura Vigor GS
1992-1994 Acura Vigor LS
1988-1991 Honda CRX HF
1988-1991 Honda CRX Si
1988-1991 Honda Civic RT 4WD
1989-1991 Honda Civic Si
1990-1991 Honda Civic EX
2000-2002 Honda Insight Base
1992-1993 Honda Prelude Si 4WS
1992-1996 Honda Prelude Si
1993-1996 Honda Prelude VTEC
1995 Honda Prelude SE
1997-2001 Honda Prelude Type SH

Product Details

Product Description
Part Numbers
Sizing & Fit

About AEM

AEM engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full AEM lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

AEM 25-303BK Adjustable Fuel Pressure Regulator

The AEM 25-303BK Adjustable Fuel Pressure Regulator is engineered to provide precise fuel delivery for high-performance Honda and Acura vehicles. Capable of supporting engines up to 1000 horsepower, this regulator ensures optimal fuel pressure for modified engines, race applications, and demanding driving conditions.

Key Features:

  • High Horsepower Support: Designed to handle fuel flow requirements for engines up to 1000 HP, making it suitable for significant performance upgrades.
  • Interchangeable Discharge Ports: Features AEM's patented interchangeable discharge ports, allowing for fine-tuning of fuel flow to match specific fuel pump characteristics.
  • Versatile Fitting Options: The regulator base is tapped to accept -6 AN or 9/16"x18 fittings, offering flexibility in fuel line connections. A custom barb fitting for the factory fuel hose is also included.
  • Gauge Port: Equipped with a 1/8" NPT port for easy installation of a fuel pressure gauge or sensor, enabling real-time monitoring.
  • Durable Black Finish: The sleek black finish provides a clean aesthetic and robust protection against corrosion and wear.

Vehicle Fitment:

This AEM 25-303BK regulator is specifically designed for a range of Honda and Acura models, including:

  • Acura Integra: 1986-1993 (GS, GS-R, LS, LS Special Edition, RS)
  • Acura TL: 1995-1998 (Base, Premium)
  • Acura Vigor: 1992-1994
  • Acura Legend: 1991-1994
  • Acura NSX: 1991-2001 (Base, T, Alex Zanardi Edition)
  • Honda Civic: 1988-1991
  • Honda CRX: 1988-1991
  • Honda Prelude: 1992-1996

Ensure your engine receives the fuel it needs for peak performance with the AEM 25-303BK. Purchase yours today from GGCRACING!

Vehicle Fitment

Years Make Model Trim
1986-1993 Acura Integra LS
1986-1993 Acura Integra RS
1987-1988 Acura Integra LS Special Edition
1990-1993 Acura Integra GS
1992-1993 Acura Integra GS-R
1991-2001 Acura NSX Base
1995-2002 Acura NSX T
1999 Acura NSX Alex Zanardi Edition
1995-1998 Acura TL Premium
1992-1994 Acura Vigor GS
1992-1994 Acura Vigor LS
1988-1991 Honda CRX HF
1988-1991 Honda CRX Si
1988-1991 Honda Civic RT 4WD
1989-1991 Honda Civic Si
1990-1991 Honda Civic EX
2000-2002 Honda Insight Base
1992-1993 Honda Prelude Si 4WS
1992-1996 Honda Prelude Si
1993-1996 Honda Prelude VTEC
1995 Honda Prelude SE
1997-2001 Honda Prelude Type SH

Product Details

Product Description

About AEM

AEM engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full AEM lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

AEM 25-303BK Adjustable Fuel Pressure Regulator

The AEM 25-303BK Adjustable Fuel Pressure Regulator is engineered to provide precise fuel delivery for high-performance Honda and Acura vehicles. Capable of supporting engines up to 1000 horsepower, this regulator ensures optimal fuel pressure for modified engines, race applications, and demanding driving conditions.

Key Features:

  • High Horsepower Support: Designed to handle fuel flow requirements for engines up to 1000 HP, making it suitable for significant performance upgrades.
  • Interchangeable Discharge Ports: Features AEM's patented interchangeable discharge ports, allowing for fine-tuning of fuel flow to match specific fuel pump characteristics.
  • Versatile Fitting Options: The regulator base is tapped to accept -6 AN or 9/16"x18 fittings, offering flexibility in fuel line connections. A custom barb fitting for the factory fuel hose is also included.
  • Gauge Port: Equipped with a 1/8" NPT port for easy installation of a fuel pressure gauge or sensor, enabling real-time monitoring.
  • Durable Black Finish: The sleek black finish provides a clean aesthetic and robust protection against corrosion and wear.

Vehicle Fitment:

This AEM 25-303BK regulator is specifically designed for a range of Honda and Acura models, including:

  • Acura Integra: 1986-1993 (GS, GS-R, LS, LS Special Edition, RS)
  • Acura TL: 1995-1998 (Base, Premium)
  • Acura Vigor: 1992-1994
  • Acura Legend: 1991-1994
  • Acura NSX: 1991-2001 (Base, T, Alex Zanardi Edition)
  • Honda Civic: 1988-1991
  • Honda CRX: 1988-1991
  • Honda Prelude: 1992-1996

Ensure your engine receives the fuel it needs for peak performance with the AEM 25-303BK. Purchase yours today from GGCRACING!

Vehicle Fitment

Years Make Model Trim
1986-1993 Acura Integra LS
1986-1993 Acura Integra RS
1987-1988 Acura Integra LS Special Edition
1990-1993 Acura Integra GS
1992-1993 Acura Integra GS-R
1991-2001 Acura NSX Base
1995-2002 Acura NSX T
1999 Acura NSX Alex Zanardi Edition
1995-1998 Acura TL Premium
1992-1994 Acura Vigor GS
1992-1994 Acura Vigor LS
1988-1991 Honda CRX HF
1988-1991 Honda CRX Si
1988-1991 Honda Civic RT 4WD
1989-1991 Honda Civic Si
1990-1991 Honda Civic EX
2000-2002 Honda Insight Base
1992-1993 Honda Prelude Si 4WS
1992-1996 Honda Prelude Si
1993-1996 Honda Prelude VTEC
1995 Honda Prelude SE
1997-2001 Honda Prelude Type SH

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