YESHMA EFI Fuel Pressure Regulator Kit with 0–100 psi Gauge, Black Aluminum, 6AN Lines and Adjustable 30–70 psi Setpoint

YESHMA EFI Fuel Pressure Regulator Kit is a complete adjustable aluminum regulator assembly with a 0–100 psi gauge and 6AN fittings designed to stabilize fuel pressure for EFI systems.

This kit brings a robust, serviceable solution when you need precise fuel pressure control for a wide range of fuel-injected vehicles. The regulator body is machined from high-quality aluminum and is finished in black, while supplied hoses use 304 stainless braid and CPE synthetic rubber for durability. The included gauge and multiple 6AN adapters make the kit broadly compatible with common EFI fuel rails and aftermarket plumbing.

How accurate and adjustable is the fuel pressure reading?

The included mechanical gauge reads from 0 to 100 psi so you can monitor system pressure at a glance. The regulator’s setpoint is user-adjustable—practical adjustment range is approximately 30 to 70 psi—letting you tune pressure to match injectors, fuel pump capacity, and power demands.

• 0–100 psi gauge for full-range monitoring
• Adjustable setpoint typically between 30–70 psi
• Locknut-style adjustment to secure the chosen pressure

What hardware and fittings come with the kit?

This kit ships as a near-complete plumbing package so you won’t need many extra parts for most installations. It includes a selection of 6AN straight and 90-degree adapters, a fuel rail adapter, a port plug, mounting bracket, and pre-braided fuel lines to simplify plumbing.

• 1× EFI fuel pressure regulator (aluminum, black)
• 1× 0–100 psi mechanical gauge plus mounting bracket
• 3× 6AN straight adapters, 3× 6AN 90° adapters, 1× 6AN port plug
• 3× 6AN fuel lines and a fuel rail adapter for common EFI rails

What materials and build quality should I expect?

The regulator body is crafted from high-quality aluminum for light weight and corrosion resistance, while the supplied hose assemblies combine 304 stainless steel braid with CPE synthetic rubber for pressure containment and chemical durability. The gauge is mechanical for simple, dependable readings without electronics.

• Aluminum regulator body, black finish for visual durability
• 304 stainless braided hoses with CPE rubber inner core
• AN-style fittings for leak-resistant connections

Who is this for? This YESHMA regulator kit suits automotive enthusiasts, tuners, and professional mechanics who need reliable, adjustable fuel pressure control for EFI engines. It’s especially useful for engines undergoing power upgrades, custom injector tuning, or setups that require a dedicated return-style regulator. Because installation involves fuel system plumbing and calibration, professional installation or experience with EFI systems is recommended. The kit provides flexible plumbing options, strong materials, and a visible gauge so you can set and verify fuel pressure during tuning and diagnostics.