Woolf Aircraft 400-065-400-090-6061 Aluminum Bent Elbow 4" OD 90-Degree Mandrel Bent

The Woolf Aircraft 400-065-400-090-6061 is a precision mandrel-bent aluminum elbow designed for high-performance intake, intercooler, and custom exhaust applications. Manufactured from 6061 aluminum alloy with a natural finish, this 90-degree bent elbow combines strength with lightweight construction for demanding automotive, marine, diesel, and turbine engine builds.

Key Specifications:

• Outside diameter: 4.000 inches
• Wall thickness: 0.065 inches (16 gauge)
• Bend angle: 90 degrees
• Centerline radius: 4.000 inches (tight radius)
• Material: 6061 aluminum alloy
• Finish: Natural aluminum
• Construction: Mandrel-bent for smooth internal flow

Features and Benefits:

• Mandrel-bent construction maintains consistent inner diameter throughout the bend, maximizing airflow and minimizing turbulence
• 6061 aluminum alloy offers excellent strength-to-weight ratio and corrosion resistance
• Tight 4-inch centerline radius allows for compact installation in space-constrained applications
• Precision-formed to exact specifications for reliable fit and performance
• Natural finish allows for polishing, powder coating, or direct installation

Since 1942, Michigan-based Woolf Aircraft Products has specialized in custom cutting, bending, and welding of metal tubing for aerospace, defense, and performance automotive industries. Each bent elbow is fabricated to exacting standards using professional-grade equipment and techniques including heli-arc welding, swaging, beading, and torch-brazing capabilities.

Most Woolf Aircraft bent elbows are in stock and ship within one week. This universal component can be welded, clamped, or coupled into custom intake systems, turbo plumbing, intercooler piping, and other high-performance applications requiring precision-bent aluminum tubing.