Inline Fuel Pump Fitting M10 x 1 to 8 AN Male

The Inline Fuel Pump Fitting M10 x 1 to 8 AN Male adapter is a precision fuel system connector designed for high-performance fuel delivery systems and aftermarket fuel pump installations. Built by Walbro/TI Automotive—the industry standard in fuel system components—this straight fitting serves as the critical bridge between OEM or custom fuel line sources and modern AN-style fuel system infrastructure. Whether you're upgrading to a higher-flow fuel pump, implementing a custom fuel cell setup, or retrofitting a carbureted engine with EFI, this M10 x 1 metric thread-to-8 AN male adapter eliminates compatibility issues and ensures reliable fuel delivery under demanding conditions.

Manufactured from aluminum and finished in blue anodized coating, this fitting delivers corrosion resistance and lightweight durability essential for fuel system longevity. The straight-flow design minimizes turbulence and pressure drop—critical factors when running higher fuel volumes through modern carburetors or direct-injection systems. The M10 x 1.00 male thread accommodates most OEM Walbro pump outlets, while the 8 AN male port integrates seamlessly with standard aftermarket fuel rails, regulators, and distribution blocks. Blue anodizing not only provides protection against oxidation and fuel degradation but also serves as a visual identifier in complex fuel system layouts, making future service and diagnostics faster and more intuitive.

This adapter is essential for builders transitioning legacy fuel pump assemblies to AN plumbing standards, a common scenario in street rod, race car, and engine swap projects where fuel system architecture must be customized. The compact 1.8 x 1 x 3.1-inch profile allows installation in tight engine bays without requiring extensive rework of fuel lines or pump mounting brackets. Mechanics and performance enthusiasts consistently choose Walbro fittings for mission-critical fuel delivery because they eliminate leaks, maintain system pressure integrity, and withstand sustained high-flow scenarios. For anyone serious about fuel system reliability—whether building a vintage hot rod, upgrading a daily driver, or assembling a competition engine—this inline fuel pump fitting is the professional-grade connector that bridges old pump technology to modern fuel infrastructure.