Steering U-Joint 1DD X 1DD

The Steering U-Joint 1DD X 1DD from BORGESON (MPN 015252) is a precision universal joint engineered to connect steering shafts with 1-inch double-D shaft ends—a critical component in any vehicle steering system, whether you're restoring a classic, upgrading a hot rod, or maintaining a modern custom build. This joint allows the steering column to flex and articulate while transmitting steering input reliably from the steering box to the intermediate or lower shaft, compensating for angular misalignment that naturally occurs in suspension and frame geometry.

Constructed from steel with a natural (uncoated) finish, this single-joint design features matching 1-inch double-D bores on both ends, making it a universal fit for applications requiring symmetric shaft coupling. The double-D geometry—a flat-sided shaft profile rather than round—prevents rotational slip and ensures positive engagement without the need for set screws or pins, a time-tested standard in quality steering systems. At 1.16 lbs and compact dimensions (3.75 × 1.8 × 5.2 inches), it installs easily and integrates seamlessly into tight engine bays or custom steering configurations without adding unnecessary bulk or weight.

This Steering U-Joint 1DD X 1DD suits mechanics and fabricators building or rebuilding custom steering columns, vintage car restorations, and high-performance vehicles where OEM joints may not accommodate custom shaft diameters or lengths. It pairs perfectly with aftermarket steering boxes, custom-bent columns, or modified frame geometries where off-the-shelf steering shafts fall short. Installation requires basic mechanical skill—simply align the double-D shafts, slide the joint over both ends, and secure with the appropriate coupling bolts or retainers. Always verify shaft diameter and double-D dimensions before ordering to ensure proper fit and smooth steering feel.