Radium Engineering RA-Series Fuel Pressure Regulator Kit — 08-21 Subaru WRX STI EJ257

SKU: RAD20-0965
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Sale price$269.95
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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 Radium Engineering

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

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Radium Engineering RA-Series Fuel Pressure Regulator Kit for Subaru WRX STI

Optimize your Subaru WRX STI's fuel system with the Radium Engineering RA-Series Fuel Pressure Regulator Kit. Specifically engineered for the EJ257 engine found in models from 2008 to 2021, this kit ensures precise fuel pressure control, crucial for maximizing performance and engine health.

Engineered for Performance:

  • Vehicle Fitment: Designed for 2008-2021 Subaru WRX STI models equipped with the EJ257 engine.
  • Precise Fuel Control: Maintains consistent fuel pressure under various load conditions, preventing fuel starvation or over-pressurization.
  • RA-Series Design: Features Radium Engineering's renowned RA-Series design for reliability and performance.
  • Direct Fit: Engineered for a straightforward installation, integrating seamlessly with your existing fuel system.
  • Enhanced Engine Response: Proper fuel pressure management leads to improved throttle response and overall engine efficiency.

This fuel pressure regulator kit is an essential upgrade for Subaru WRX STI owners looking to push their vehicles' performance limits. Whether you're upgrading your turbo system, tuning for more power, or simply seeking to ensure optimal fuel delivery, this Radium Engineering kit provides the reliability and precision you need. It helps maintain the correct air-fuel ratio, which is vital for both power output and engine longevity, especially in modified vehicles.

Ensure your Subaru WRX STI runs at its peak. Purchase the Radium Engineering RA-Series Fuel Pressure Regulator Kit from GGCRACING today!

Vehicle Fitment

Years Make Model Trim
2015 Subaru WRX STI Launch Edition
2015-2021 Subaru WRX STI Base
2015-2021 Subaru WRX STI Limited
2016 Subaru WRX STI Series.HyperBlue
2018 Subaru WRX STI Type RA
2019 Subaru WRX STI S209

Product Details

Product Description
Part Numbers
Sizing & Fit

About Radium Engineering

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

Watch in action

Radium Engineering RA-Series Fuel Pressure Regulator Kit for Subaru WRX STI

Optimize your Subaru WRX STI's fuel system with the Radium Engineering RA-Series Fuel Pressure Regulator Kit. Specifically engineered for the EJ257 engine found in models from 2008 to 2021, this kit ensures precise fuel pressure control, crucial for maximizing performance and engine health.

Engineered for Performance:

  • Vehicle Fitment: Designed for 2008-2021 Subaru WRX STI models equipped with the EJ257 engine.
  • Precise Fuel Control: Maintains consistent fuel pressure under various load conditions, preventing fuel starvation or over-pressurization.
  • RA-Series Design: Features Radium Engineering's renowned RA-Series design for reliability and performance.
  • Direct Fit: Engineered for a straightforward installation, integrating seamlessly with your existing fuel system.
  • Enhanced Engine Response: Proper fuel pressure management leads to improved throttle response and overall engine efficiency.

This fuel pressure regulator kit is an essential upgrade for Subaru WRX STI owners looking to push their vehicles' performance limits. Whether you're upgrading your turbo system, tuning for more power, or simply seeking to ensure optimal fuel delivery, this Radium Engineering kit provides the reliability and precision you need. It helps maintain the correct air-fuel ratio, which is vital for both power output and engine longevity, especially in modified vehicles.

Ensure your Subaru WRX STI runs at its peak. Purchase the Radium Engineering RA-Series Fuel Pressure Regulator Kit from GGCRACING today!

Vehicle Fitment

Years Make Model Trim
2015 Subaru WRX STI Launch Edition
2015-2021 Subaru WRX STI Base
2015-2021 Subaru WRX STI Limited
2016 Subaru WRX STI Series.HyperBlue
2018 Subaru WRX STI Type RA
2019 Subaru WRX STI S209

Product Details

Product Description

About Radium Engineering

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

Watch in action

Radium Engineering RA-Series Fuel Pressure Regulator Kit for Subaru WRX STI

Optimize your Subaru WRX STI's fuel system with the Radium Engineering RA-Series Fuel Pressure Regulator Kit. Specifically engineered for the EJ257 engine found in models from 2008 to 2021, this kit ensures precise fuel pressure control, crucial for maximizing performance and engine health.

Engineered for Performance:

  • Vehicle Fitment: Designed for 2008-2021 Subaru WRX STI models equipped with the EJ257 engine.
  • Precise Fuel Control: Maintains consistent fuel pressure under various load conditions, preventing fuel starvation or over-pressurization.
  • RA-Series Design: Features Radium Engineering's renowned RA-Series design for reliability and performance.
  • Direct Fit: Engineered for a straightforward installation, integrating seamlessly with your existing fuel system.
  • Enhanced Engine Response: Proper fuel pressure management leads to improved throttle response and overall engine efficiency.

This fuel pressure regulator kit is an essential upgrade for Subaru WRX STI owners looking to push their vehicles' performance limits. Whether you're upgrading your turbo system, tuning for more power, or simply seeking to ensure optimal fuel delivery, this Radium Engineering kit provides the reliability and precision you need. It helps maintain the correct air-fuel ratio, which is vital for both power output and engine longevity, especially in modified vehicles.

Ensure your Subaru WRX STI runs at its peak. Purchase the Radium Engineering RA-Series Fuel Pressure Regulator Kit from GGCRACING today!

Vehicle Fitment

Years Make Model Trim
2015 Subaru WRX STI Launch Edition
2015-2021 Subaru WRX STI Base
2015-2021 Subaru WRX STI Limited
2016 Subaru WRX STI Series.HyperBlue
2018 Subaru WRX STI Type RA
2019 Subaru WRX STI S209

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