1740-16 – Stub Midship Shaft – 16 X 1.063 Splines – Butt Dia 1.844″ – Tube Dia Wall 2.000X0.083

The 1740-16 stub midship shaft bridges the gap between transmission output and rear driveshaft section in two-piece driveshaft assemblies. Featuring 16 X 1.063 splines, a 1.844" butt diameter, and a 2.000" x 0.083" wall tube, it is precision-welded to maintain driveline balance within tight tolerances.

Two-Piece Driveshaft Architecture

Long-wheelbase trucks and SUVs use a two-piece driveshaft to avoid resonance frequencies that would be unavoidable with a single long tube. The front section -- the stub midship -- rides on a center support bearing and connects to the front of the rear driveshaft section. The 1740-16 fills this role, providing a dimensionally stable, balanced midship tube ready for installation with a matching center support bearing.

Dimensional Specifications

Balance and Runout Standards

Midship shafts are finish-balanced after assembly. Runout should be verified at installation: use a dial indicator at the center of the tube with the shaft supported on its U-joints. Maximum allowable TIR is 0.010" for passenger and light truck applications. Any damage to the tube that causes runout exceeding this limit requires replacement.

Installation Guidance

• Install center support bearing before raising shaft into position
• Align spline pilot into transmission or transfer case output bore
• Mate rear U-joint cross into the rear yoke with snap rings fully seated
• Torque center support bearing bracket fasteners to specification
• Check driveshaft angle: improper center bearing height causes vibration

Ordering

Universal Driveshafts stocks stub midship shafts across a wide range of spline and tube configurations. The 1740-16 ships assembled and ready to install. Pair with a matching center support bearing from our catalog for a complete two-piece driveshaft solution.