PQY Adjustable EFI Fuel Pressure Regulator 3–70 PSI 6AN Return Kit with Gauge & Braided Lines

This complete EFI fuel pressure regulator kit from PQY is built for tunable gasoline and E85 applications where a return-style regulator is required. The regulator body is CNC-machined from 6061-T651 aluminum and ships with multiple springs to cover low, mid and high pressure ranges. The package includes AN fittings, stainless braided lines, and a 0–160 PSI gauge to make installation and adjustment straightforward for most EFI systems.

What parts come in the PQY regulator kit and how do they simplify installation?

The kit arrives with the regulator, a pressure gauge, two alternative springs for different pressure bands, multiple AN fittings and braided feed/return lines. PQY provides basic hardware and an instruction sheet to guide setup, though professional installation is recommended if you lack fuel-system experience.

• 1 × 6AN billet aluminum regulator with ORB6 ports
• 1 × 0–160 PSI gauge for visible pressure monitoring
• 2 × springs (3–20 PSI and 45–70 PSI ranges) plus preinstalled 20–45 PSI spring
• 3 × stainless braided AN6 fuel lines and assorted AN6/AN8 fittings

How do you adjust the fuel pressure and select the right spring?

Adjusting pressure is done by turning the top adjustment bolt; the regulator accepts different springs to change its operating range. Start with the preinstalled 20–45 PSI spring for common EFI setups, then swap to the 3–20 PSI or 45–70 PSI spring if your application requires lower or higher base pressure.

• Turn the top bolt clockwise to increase pressure, counterclockwise to lower it
• Use the included gauge to confirm target PSI during tuning
• Replace springs when the desired base pressure falls outside the preinstalled range

What ports and connections does the regulator provide for feed, return and reference?

The PQY regulator includes two ORB6 ports sized for AN8 feed and one ORB6 port for the AN6 return, plus a 1/8" NPT gauge port and a vacuum/boost reference line fitting. That layout supports conventional return-style EFI plumbing and allows boost-referenced pressure control for forced-induction engines.

• ORB6 ports configured for AN8 feed and AN6 return plumbing
• 1/8" NPT port to mount the supplied 0–160 PSI gauge
• Vacuum/boost reference connection for pressure compensation under boost or vacuum

Is this regulator compatible with ethanol blends like E85 and most gasoline systems?

Yes — the materials and design are intended to work with gasoline and higher-ethanol blends such as E85 when installed correctly. Use compatible hoses and fittings, and follow fuel-system best practices to avoid material incompatibility or leaks.

• Constructed from corrosion-resistant 6061-T651 aluminum
• Supplied stainless braided lines suitable for common fuel types
• Recommended professional installation for E85 or modified systems

Who is this for: The PQY Adjustable EFI Fuel Pressure Regulator Hose Kit is aimed at tuners, performance enthusiasts and mechanics who need a configurable return-style regulator for street or race EFI systems. It suits vehicles running standard gasoline or higher-ethanol fuels that require a reliable, adjustable regulator and includes the fittings and gauge needed to complete most installations. If you prefer a bolt-on, fully assembled regulator kit with adjustable PSI and vacuum reference capability, this PQY kit offers the components to set and monitor fuel pressure precisely.