Steering Universal Joint (U-joint)

This heavy-duty steering universal joint is precision-engineered for custom steering systems, classic truck builds, hot rod applications, and LS swap projects. Available in Black or Silver finish, it covers a wide range of shaft combinations — from smooth bore to DD (Double-D) and splined configurations — so you can find the exact match your build requires. Each joint is offered in two color/finish options and spans four connection categories: Smooth Bore: 3/4" and 1" smooth bore on either or both sides — ideal for slip-fit column and shaft connections. Spline × Spline: Combinations of 3/4"-30, 3/4"-36, 11/16"-36, and 13/16"-36 spline shafts on both sides — perfect for direct spline-to-spline steering column connections. DD × DD / DD × Smooth Bore / DD × Spline: Double-D shaft on one or both sides, compatible with 3/4" DD and 1" DD configurations — the go-to choice for GM columns, rack-and-pinion conversions, and aftermarket steering shafts. Key Features: Heavy-duty steel construction — engineered for strength and long-lasting durability under real driving conditions Multiple shaft interface options: Smooth Bore, Double-D (DD), and Spline (30T & 36T) on both Side A and Side B Available in Black (powder coated) and Silver (polished/nickel) finish Reduces slop and play in the steering linkage for tighter, more responsive steering feel Compact design fits tight engine bay and firewall clearances common in C10 trucks, muscle cars, and swap builds How to Select Your Variant: Use the dropdowns to choose your Color, Side A (the shaft or column side), and Side B (the steering box or rack side). Each combination is stocked and ready to ship. Specifications: Material: Steel Finish: Black (powder coat) or Silver (polished/nickel) Side A Options: 3/4" Smooth Bore, 1" Smooth Bore, 3/4"-30 Spline, 3/4"-36 Spline, 13/16"-36 Spline, 11/16"-36 Spline, 3/4" DD, 1" DD Side B Options: 3/4" Smooth Bore, 1" Smooth Bore, 3/4"-30 Spline, 3/4"-36 Spline, 13/16"-36 Spline, 3/4" DD, 1" DD Application: Universal — hot rods, C10 trucks, muscle cars, LS swaps, custom steering builds Not sure which combination you need? Match your existing column shaft (Side A) to your steering box or rack input shaft (Side B) and select accordingly. Feel free to reach out — we're happy to help you identify the right part for your build.