#10 Female x #8 Male Swivel Reducer

The #10 Female x #8 Male Swivel Reducer is a precision adapter fitting engineered for custom fuel, oil, and coolant line systems where stepped hose sizes meet in high-performance applications. Built by FRAGOLA, this straight reducer bridges the gap between #10 AN (5/8") female and #8 AN (1/2") male ports, making it essential for builders modernizing older fuel systems or optimizing flow rates in modified engine bays. Whether you're installing a new fuel injection setup, upgrading hydraulic brake lines, or rerouting transmission cooler circuits, this fitting eliminates costly custom fabrication and reduces leak points in critical systems.

Constructed from aluminum and finished in durable blue anodize, this adapter delivers corrosion resistance and lightweight performance—critical for motorsports and street applications exposed to moisture and temperature cycling. The swivel design on the female end accommodates up to 360° hose rotation without loosening, eliminating the need for secondary clamps and reducing assembly time. The straight configuration (rather than 45° or 90° elbows) provides optimal flow characteristics and simplifies routing in tight engine compartments, while the male flare thread on the #8 side seats directly into hard-line or banjo fittings with industry-standard leak-free geometry.

This reducer works best in fuel system upgrades, EFI conversions, and custom cooling loops where existing hardline sizes don't match modern AN hose standards. Mechanics and fabricators benefit from its compact 1.95-inch length, which fits tight spaces without compromising access or introducing stress risers in adjacent fittings. Compatible with all FRAGOLA hose and line products rated for AN sizing, it pairs seamlessly with fuel injection rails, carburetors, radiator bypass blocks, and transmission oil coolers. Torque specifications follow standard AN flare wrench practices—typical 15–25 foot-pounds depending on line pressure and fitting material.