Doug's Headers H7065 3.5 Inch Mild Steel U-Bend Exhaust Tubing

The Doug's Headers H7065 is a precision-engineered 3.5-inch mild steel U-bend exhaust tube designed for custom exhaust system fabrication and header construction. This 180-degree mandrel-bent component provides smooth, unrestricted exhaust flow for maximum performance gains.

Key Features:

• 3.5-inch outside diameter mild steel tubing
• 180-degree U-bend configuration
• Mandrel-bent construction maintains consistent inner diameter throughout the bend
• 16-gauge (.065-inch) wall thickness for durability
• Ideal for custom exhaust fabrication, header building, and over-axle routing
• Smooth interior prevents flow restrictions and turbulence

Mandrel bending ensures the tubing maintains its full inside diameter through the curve, eliminating the crimping and flow restrictions common with conventional crush-bent tubing. This professional-grade component is perfect for fabricators building custom exhaust systems, headers, or modifying existing exhaust routing on performance vehicles, trucks, and muscle cars.