Perrin Adjustable Fuel Pressure Regulator for 2004 Subaru WRX STI

CARB Compliance / Exemption Warning: If you live in California and your application for this product is not CARB Compliant / Exempt, then you cannot purchase it for public highway or street use (in that case it could only be used for formally sanctioned race use on a racing vehicle that may never be used on a public highway or street). If your application is not CARB Compliant / Exempt and you're shipping to California, our system will let you know on the final checkout page.

Perrin's Adjustable Fuel Pressure Regulator is constructed of 6061 billet aluminum and is capable of supporting enough fuel flow for engines in excess of 1000 horsepower. Fully capable of adjusting the pressure of the fuel pump installed from as low as 20 PSI to the max output of your fuel pump. Each regulator is coated in a stealthy black anodized finish for protection and aesthetics.

Key Features:

• Six -6 AN ports.
• No ECU tune required.
• Direct bolt-on install.
• Adjustable from 20 PSI to maximum fuel pump capacity rating.
• Features a sleek black anodized finish.
• 1/8" NPT port at bottom allows for installation of aftermarket fuel pressure sensors and/or gauges.