4AN ProSeries Blk 230 Stainless Core Hose 6ft

The 4AN ProSeries Blk 230 Stainless Core Hose 6ft is a premium fuel and fluid transfer line engineered for high-performance automotive applications where reliability and durability are non-negotiable. Whether you're building a custom engine bay, upgrading a fuel system, or executing a complete drivetrain refresh, this REDHORSE PERFORMANCE hose delivers the consistent performance serious mechanics and enthusiasts demand. The 6-foot length provides flexibility in routing through tight engine compartments while maintaining structural integrity under pressure and temperature cycling.

Constructed with a 230-series stainless steel core, this hose resists corrosion, maintains flexibility across extreme temperature ranges, and handles both fuel and coolant applications without degradation. The ProSeries designation indicates reinforced construction with braided or wrapped outer layers that prevent abrasion damage during installation and operation, critical when routing near sharp firewall edges or moving engine components. The black cover provides UV protection and maintains appearance in engine bays exposed to sunlight, while the AN4 fitting specification ensures compatibility with industry-standard quick-disconnects and adapter blocks used in fuel systems, cooling circuits, and turbo applications.

This hose suits fuel-injected conversions, turbo and supercharger installations, custom water cooling loops, and any build where OEM rubber lines lack the pressure rating or lifespan required. Mechanics specify REDHORSE hoses for street rods, race cars, and engine transplants because the stainless core eliminates worry about fuel degradation or rust contamination—a common failure point in older systems. Installation is straightforward with standard AN fittings; the 6-foot length typically covers fuel pump-to-rail distances or coolant bypass routing in most V8 and inline-six applications. Proper support clamps are recommended every 12–18 inches to prevent vibration-induced wear against frame or block surfaces.