Steering U-Joint 3/4in-36 x 1in DD

The Steering U-Joint 3/4in-36 x 1in DD by Borgeson is a precision-engineered universal joint designed for custom steering system builds where shaft misalignment or angle changes demand flexibility. Whether you're fabricating a modified steering column for a classic car restoration, hot rod, or off-road suspension system, this single-joint unit accommodates the real-world challenges of non-parallel shafts that occur in lowered vehicles, custom frame rails, or aftermarket steering racks. Universal joints are critical safety components—they allow smooth torque transfer while maintaining driver control across varying angles.

This Borgeson u-joint features a 3/4-inch 36-spline input shaft paired with a 1-inch double-D output, machined from steel for durability and natural finish for corrosion resistance in engine bays and under-dash environments. The 36-spline design provides positive engagement without slippage, while the double-D output accommodates standard steering box or rack pinion inputs common in retrofit applications. The compact footprint (measuring 3.7 x 1.7 x 5.25 inches and weighing just 1.01 lbs) makes it ideal for tight steering column spaces where offset or articulation is necessary to clear engine blocks, firewalls, or modified suspension geometry.

Mechanics and fabricators building custom steering columns—particularly for restomod projects, competition vehicles, or lifted trucks with geometry changes—rely on this joint to maintain smooth, responsive steering feel without binding or vibration. Installation requires proper alignment of both shafts to minimize operating angles and extend u-joint lifespan; excessive angles (beyond 10–15 degrees in either direction) increase wear and noise. Verify compatibility with your input and output shaft diameters and spline counts before ordering; this single-joint configuration works best in applications requiring moderate deflection rather than extreme angles.