Fuel Press Reg Mini EFI 25-90psi 6AN/6AN

The Fuel Press Reg Mini EFI 25-90psi 6AN/6AN from FUELAB Fuel Systems is a compact, in-line fuel pressure regulator engineered for engine builders and tuners who demand precise fuel delivery across a wide pressure range. This mini regulator is designed for custom fuel injection setups, turbo applications, and modified engines running on gasoline, E85, diesel, or methanol. Whether you're building a high-output street machine or a dedicated race platform, this unit delivers the pressure stability needed to maintain consistent injector pulse width and optimal air-fuel ratios under varying load conditions.

Built from anodized aluminum for durability and corrosion resistance, the regulator features dual 6 AN female inlets and a 6 AN female return line, making integration into aftermarket fuel systems straightforward. The adjustable bypass design maintains 25–90 psi range capability, allowing tuners to dial in pressure for different injector sizes and engine configurations without swapping hardware. A 1/8 inch NPT port provides auxiliary pressure signal taps for gauge monitoring or engine management systems, giving you real-time feedback on fuel delivery health. The compact footprint minimizes packaging constraints on cramped engine bays typical of custom builds.

This regulator is ideal for standalone fuel injection conversions, engine swaps, and turbocharger installs where OEM regulators lack the adjustability or fuel compatibility needed. Mechanics and tuners appreciate its multi-fuel compatibility—it handles pump gas, E85 blends, and specialty fuels without degradation. Installation requires basic AN fitting knowledge and a return line to tank; mount near the fuel rail or inline with your fuel pump discharge for optimal response. Pair it with quality injectors and a tuning platform for repeatable, reliable performance across the full boost and RPM range of your modified engine.