YEHERIT Adjustable EFI Fuel Pressure Regulator Kit — 30–70 PSI, 6AN PTFE-Braided Hose

YEHERIT Adjustable EFI Fuel Pressure Regulator Kit is a 30–70 PSI adjustable, return-style regulator with 6AN fittings and PTFE-braided hose designed to stabilize fuel pressure for gasoline and alcohol-based fuels.

This kit gives tuners and installers a compact, serviceable way to fine-tune fuel pressure for EFI systems across a wide range of engines. Built for compatibility with gasoline, E85, ethanol and methanol (not diesel), the regulator offers a broad adjustment window, durable fittings, and a bypass return design to keep pressure steady under changing load and RPM conditions.

How does the regulator control fuel pressure during tuning?

The YEHERIT regulator uses an adjustable spring and diaphragm assembly to set outlet pressure between 30 and 70 PSI. Turning the top adjuster compresses or releases the spring to raise or lower system pressure, letting you dial in the flow your injectors need for accurate air/fuel ratios.

• Adjustable range: 30–70 PSI for broad application.
• Return/bypass design routes excess fuel back to the tank.
• Fine-tune via the accessible top adjustment nut without removing lines.

Will this regulator work with my vehicle's fuel type and system?

This regulator is compatible with most gasoline and alcohol-based EFI setups, including E85 and ethanol blends. It is not rated for diesel; confirm your system uses a return-style setup or add a return line to use the bypass function correctly.

• Fuel compatibility: gasoline, E85, ethanol, methanol.
• Not suitable for diesel fuel systems.
• Works best in return-style EFI systems or systems adapted to return excess fuel.

What materials and fittings are included for durability and leak resistance?

The kit comes with 6AN (AN-6) fittings and a PTFE-braided hose to resist chemical breakdown and withstand higher temperatures. These components reduce the chance of leaks and provide a serviceable connection that performs under repeated use and vibration.

• 6AN fittings for robust, standard high-performance connections.
• PTFE-braided hose resists fuel, heat, and abrasion.
• Stainless or plated body finishes (depending on batch) for corrosion resistance.

How do I install and maintain the YEHERIT regulator safely?

Installation requires a clean, properly routed return line and correct torque on AN fittings to prevent leaks. After mounting, start with a mid-range pressure, then adjust while monitoring fuel pressure under idle and load to achieve desired tuning targets.

• Mount on a solid bracket, clear of extreme heat sources.
• Use proper thread sealant where recommended and torque fittings to spec.
• Check for leaks, and recheck pressure after a short drive cycle.

Who is this for: The YEHERIT Adjustable EFI Fuel Pressure Regulator Kit is aimed at performance enthusiasts, mechanics, and tuners who need flexible pressure control for upgraded injectors, turbo or nitrous-assisted engines, and vehicles converted to run ethanol blends. If you use gasoline or alcohol fuels and want a dependable, adjustable return-style regulator with durable 6AN connections and PTFE hose, this kit provides a practical, tune-ready solution backed by one year of product quality support.