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

This PQY kit delivers a complete, serviceable fuel pressure regulation solution for modified street cars, race builds, or EFI conversions. Machined from 6061-T651 billet aluminum with CNC precision, the regulator provides ORB6 feed and return ports, an NPT gauge port, and a vacuum/boost reference. The package includes multiple springs to span low to high target pressures, a 0–160 PSI gauge, stainless braided AN lines, and fittings so you can install a return-style setup without sourcing extra parts.

How does the adjustable range of 3–70 PSI work?

The regulator ships with a medium spring installed (20–45 PSI) and two additional springs for lower or higher ranges. Changing the spring and turning the top adjustment bolt lets you fine-tune base fuel pressure for different injectors, pumps, or fuel types like E85. Adjustment is mechanical — no electronics — so it’s reliable and serviceable in the garage.

• Preinstalled spring: 20–45 PSI range for common setups
• Included springs: 3–20 PSI (low) and 45–70 PSI (high)
• Adjust via top bolt; replace spring to shift range
• Gauge port allows precise monitoring during tuning

What fittings and hose components are included for installation?

The kit arrives with AN fittings and stainless braided fuel lines sized to match the regulator’s ORB6 ports and AN6 return. That reduces parts hunting and helps ensure leak-free AN connections when assembled correctly. A clear parts list in the box guides installation, but professional installation is recommended if you’re unfamiliar with fuel system plumbing.

• One 6AN billet regulator with ORB6/AN6 ports
• Seven AN6 fittings and three stainless braided 6AN fuel lines
• 0–160 PSI pressure gauge threaded into the NPT port
• Washers and hardware plus printed installation instructions

Is this regulator compatible with E85 and other fuels?

PQY specifies compatibility with E85, alcohol blends, and standard gasoline when proper fuel-compatible hoses and seals are used. The aluminum body and stainless lines resist many fuel types, but always verify all sealing surfaces and fittings are compatible with the fuel you run. For corrosive blends, follow manufacturer guidance and inspect fittings more frequently.

• Designed for E85 and gasoline EFI systems
• Use supplied stainless braided lines for fuel resistance
• Inspect seals and fittings for alcohol compatibility
• Recommended: professional installation for safety and sealing

Who is this for? The PQY Adjustable EFI Fuel Pressure Regulator Hose Kit suits tuners, hobbyists, and professional builders upgrading or replacing fuel management components on EFI engines. It’s ideal when you need a return-style regulator with a broad adjustable range — from low-pressure street applications to higher-pressure race setups — and want a mostly complete kit that includes gauge, springs, and braided AN lines. If you’re converting to E85, increasing fuel flow, or building a boosted engine that requires vacuum/boost reference control, this regulator provides the mechanical adjustability and fittings to integrate into most EFI fuel-return systems.