YEHERIT Adjustable EFI Fuel Pressure Regulator Kit 0-100 PSI Gauge — Bypass Return, 6AN & PTFE Hose

YEHERIT Adjustable EFI Fuel Pressure Regulator Kit is a complete, reusable fuel-pressure control system with a 0–100 PSI gauge, 6AN fittings and PTFE braided hose designed for gasoline and alcohol fuels.

This kit gives you precise fuel pressure management for electronic fuel injection (EFI) systems without changing original fuel pump flow or returning incompatible diesel fuel. The assembly combines a wide adjustment range, robust 6AN hardware, a bypass-style return configuration, and a clear mechanical gauge so you can tune pressure for different engines and fuels such as gasoline, E85, ethanol and methanol. The included PTFE braided hose reduces permeation and resists heat and chemicals for long service life, while the 0–100 PSI gauge provides immediate visual verification during setup and diagnostics.

How does this regulator help tune EFI systems?

The YEHERIT regulator lets you set and stabilize fuel pressure so the engine’s fuel delivery matches injector and pump capability. A consistent reference pressure helps maintain injector flow proportional to pulse width, reducing the need for compensating changes to engine controls.

• Adjustable range supports 30–70 PSI typical settings and reads to 100 PSI for diagnostics.
• Bypass return design bleeds excess fuel back to tank, preventing pressure spikes.
• Mechanical gauge gives real-time pressure readings for setup and troubleshooting.

Is this compatible with my fuel type and vehicle?

This regulator is built for gasoline and alcohol-based fuels including E85, ethanol and methanol, but it is not specified for diesel systems. It suits most EFI applications where 6AN fittings and a return-style regulator install are appropriate.

• Works with gasoline, E85, ethanol and methanol fuels—do not use with diesel.
• 6AN fittings match common aftermarket braided lines and adapters.
• Universal mounting and hose lengths allow retrofit on many cars, motorcycles, and race applications.

What components and hardware are included and how durable are they?

The kit contains a calibrated 0–100 PSI gauge, a precision-adjustable regulator body, 6AN fittings and a PTFE braided hose for fuel service. Materials and fittings are selected to resist corrosion, chemical attack and long-term vibration in engine bays.

• Premium 6AN fittings for secure, leak-resistant connections.
• PTFE braided hose resists fuel permeation, heat and ethanol attack.
• Quality mechanical gauge with clear face for reliable monitoring.

How do I install and maintain the regulator safely?

Installation requires basic mechanical skill and correct fuel-system routing: mount the regulator near the rail, connect feed and return lines with supplied 6AN fittings, and set the gauge to the desired static pressure with the engine off for initial checks. Regular checks for fittings tightness and hose condition help prevent leaks and ensure consistent performance.

• Mount securely and route hose away from hot exhaust and moving parts.
• Bleed trapped air and verify pressure with the gauge before driving.
• Inspect hoses and fittings periodically; replace if damaged or worn.

Who is this for: The YEHERIT Adjustable EFI Fuel Pressure Regulator Kit is aimed at tuners, hobbyists and professional techs who need a reliable, versatile fuel-pressure solution for gasoline and alcohol-fueled EFI engines. It’s suited for street performance cars, race vehicles, custom builds and anyone swapping injectors or pumps who needs a return-type regulator with durable fittings and a clear pressure gauge. YEHERIT backs the product with one year of quality support, and their team responds to inquiries within 24 hours for help with fitment, setup or warranty questions.