#8 Fuel Pump Fitting

The #8 Fuel Pump Fitting from Carter (MPN 156386) is a precision adapter designed for high-performance fuel system modifications and custom fuel line routing in automotive applications. Whether you're upgrading a fuel pump assembly, building a custom fuel delivery system, or adapting AN-rated fuel lines to OEM threaded ports, this straight adapter bridges the gap between 8 AN male connections and 5/8-18 inch male NPT threads. Mechanics and enthusiasts rely on this fitting to maintain consistent, leak-free fuel delivery in modified or performance fuel systems where standard OEM connections don't accommodate aftermarket components.

Constructed from steel and finished with zinc plating, the #8 Fuel Pump Fitting resists corrosion and oxidation in fuel system environments where moisture and ethanol-blended fuels create wear on unprotected hardware. The straight 90-degree design eliminates unnecessary bends in fuel line routing, reducing pressure drops and vibration-induced stress on hose and fitting connections. The 8 AN male end accepts standard braided stainless steel or rubber fuel line with proper compression fittings, while the 5/8-18 inch male NPT thread engages directly with factory or aftermarket fuel pump ports, fuel pressure regulators, and filter housings without additional adapters.

This fitting is ideal for fuel system upgrades on muscle cars, turbocharged builds, EFI conversions, and race-oriented vehicles where OEM fuel delivery cannot support increased demand. Installation requires only a wrench and basic mechanical knowledge—simply thread the NPT side into the target port using appropriate sealant tape (PTFE) and torque to manufacturer specifications. Compatible with fuel pumps rated 5–12 PSI (carbureted) and up to 60+ PSI (EFI systems), the Carter #8 Fuel Pump Fitting delivers dependable service across a wide spectrum of domestic and import fuel system applications. Compact dimensions (1.05 x 0.95 x 1.4 inches) and minimal weight (0.12 lbs) allow seamless integration into tight engine bays without interference with belts, hoses, or firewall routing.