U-Bend Mild Steel 4.000 x 7.5in Radius 16 Gauge

The U-Bend Mild Steel 4.000 x 7.5in Radius 16 Gauge exhaust bend from HOOKER is engineered for marine and boating exhaust systems where durability and precise flow management are critical. Built to withstand the corrosive salt-water environment and vibration-heavy operational demands of offshore and freshwater vessels, this mandrel-bent component ensures smooth exhaust gas transition without turbulence or collapse. Whether you're restoring a classic inboard engine or upgrading a performance marine power plant, this exhaust bend is designed to maintain peak combustion efficiency while resisting rust and fatigue.

Manufactured from mild steel and finished to resist corrosion in saltwater applications, this U-Bend features a 4-inch diameter with a 7.5-inch radius and 6-inch legs, allowing smooth directional changes in exhaust routing without kinking or flow restriction. The 16-gauge wall thickness provides structural integrity under repeated thermal cycling while remaining lightweight enough for vessel balance and fuel efficiency. Mandrel bending—rather than cold forming—preserves the internal diameter throughout the curve, preventing turbulent eddies that would rob horsepower and create backpressure. The result is optimized scavenging and cleaner exhaust discharge, critical for both performance and environmental compliance on modern marine platforms.

Boaters, marine mechanics, and engine builders rely on HOOKER exhaust components for OEM-quality fit and longevity in demanding saltwater and freshwater environments. The 4-inch diameter accommodates mid-range inboard and outboard engine platforms commonly found in center consoles, fishing boats, and runabouts. Installation requires standard exhaust clamps and gaskets; verify flange and port dimensions against your specific engine block configuration before ordering. This mandrel-bent component integrates seamlessly into custom or replacement exhaust systems where precision bending ensures leak-free joints and reliable performance across hundreds of operating hours.