Cutoff Fitting - 8an to 10an

The Cutoff Fitting - 8AN to 10AN from AEROMOTIVE is an essential adapter for custom fuel system builds and high-performance engine modifications. This fitting bridges two different AN port sizes, allowing you to transition from 8AN hard lines or hoses to 10AN components without purchasing entirely new fuel system sections. Whether you're upgrading a carbureted classic, installing a fuel injection system on a resto-mod, or reconfiguring fuel delivery on a turbocharged engine swap, this adapter solves real-world plumbing challenges where standard off-the-shelf kits don't accommodate your existing line routing.

Manufactured by AEROMOTIVE—a trusted name in motorsport fuel system engineering—this cutoff fitting is precision-engineered to handle fuel flow without leaks or pressure loss. The stepped bore design ensures smooth flow transition between the two AN sizes, minimizing turbulence that can introduce cavitation in fuel pumps. Compact dimensions (2.65 x 1.35 x 3.75 inches) and lightweight construction (0.07 lbs) make it ideal for tight engine bay installations where space constraints demand efficiency. The fitting's construction meets automotive industry standards for fuel system safety, ensuring reliable performance under sustained boost or high-flow carburetor demands.

Experienced fabricators, engine builders, and DIY enthusiasts benefit most from keeping these adapters in stock for emergency repairs or mid-project modifications. Compatibility spans most domestic and import platforms running aftermarket fuel systems—from naturally aspirated builds to forced-induction setups where fuel delivery consistency is critical. Installation requires only basic hand tools and AN line wrenches; the fitting threads securely into existing fuel rail ports or line unions. If you're mid-build and discovered a line-size mismatch, or you're retrofitting a legacy fuel system onto a modern engine platform, the AEROMOTIVE cutoff fitting eliminates the need to reweld or replace entire fuel line sections.