Steering Coupler Steel 9 /16-36 X 3/4 Smooth Bore

The Steering Coupler Steel 9/16-36 X 3/4 Smooth Bore by BORGESON is a precision-engineered steering shaft adapter designed for custom automotive builds and restoration projects that require reliable connection between mismatched steering shafts. This universal coupler serves as the critical link between steering columns with different bore sizes and spline configurations, making it an essential component for hot rods, classic car restorations, and custom vehicle fabrications where OEM steering components are incompatible or unavailable.

Manufactured from durable steel in its natural finish, this coupler features a 9/16-inch 36-spline input side paired with a 3/4-inch smooth bore output, providing flexible accommodation for various steering shaft diameters. The weld-on design allows for permanent, secure installation that can be custom-fitted to your specific steering geometry, while the smooth bore accommodates shafts with non-splined ends. The steel construction ensures strength and longevity under the continuous rotational stress and torque demands of steering input, while maintaining tight tolerances necessary for precise steering feedback and safety-critical vehicle control.

This universal steering coupler is ideal for fabricators, restoration specialists, and performance enthusiasts who are engineering custom steering systems or adapting donor components from different vehicles. Its compact design—measuring 3.75 by 1.6 by 5.5 inches and weighing only 0.3 pounds—fits within tight engine bay spaces without compromising structural integrity. Installation requires welding equipment and mechanical expertise, making it suitable for professional shops or experienced builders committed to producing OEM-quality steering connections that meet the demands of both street-driven restorations and high-performance applications.