#8 To #4 Reducer Steel

The AEROQUIP #8 to #4 Reducer Steel fitting adapter is a straight-thread AN connector designed to step down from an 8 AN female port to a 4 AN male outlet. This zinc-plated steel reducer enables seamless integration of differently-sized hydraulic and pneumatic lines in high-pressure fluid transfer systems, making it essential for custom fluid routing in industrial, aerospace, and motorsports applications.

Constructed from steel with a zinc-plated finish, this adapter provides corrosion resistance and durability in demanding environments. The straight-thread design ensures clean, leak-free connections without the complexity of 45-degree or 90-degree bends. AEROQUIP's FCM2409 model meets the dimensional and pressure specifications required for AN-standard fluid systems, delivering reliable performance across temperature and pressure ranges typical in automotive tubing networks, aircraft fuel systems, and industrial hydraulic assemblies.

This reducer is ideal for technicians and engineers consolidating multiple flow paths into a single larger line, or splitting high-capacity sources into smaller distribution branches. Common applications include fuel system modifications, brake line routing, power steering fluid circuits, and compressed air manifold setups. The compact form factor—weighing just 0.13 lbs—fits into tight engine bays and equipment cabinets without adding bulk.

Buyers selecting this AEROQUIP adapter should verify compatibility with their system's operating pressure, fluid type, and line material before installation. Proper torque sequencing and thread sealant (where applicable) ensure optimal sealing and longevity. This is a single-unit fitting; multiple adapters may be required for complex system designs.

Stock this AEROQUIP #8 to #4 Reducer Steel fitting adapter (FCM2409) for reliable fluid system upgrades and repairs. Available now at TacticalSurplusUSA with verified specifications and competitive pricing.