4MY32P3
U-Joint
Mack

This universal joint is engineered for the heavy-duty driveline environment typical of Mack trucks. It features a precisely machined cross and hardened bearing caps, with greaseable seals designed for long service life under high torque and frequent angle changes. The joint tolerates driveline misalignment and rapid articulation without transferring excessive stress into the driveshaft, helping reduce vibration and premature wear. Its rugged metallurgy resists wear from metal-to-metal contact and minimizes heat buildup during continuous operation, maintaining consistent rotational feel across a wide range of speeds. Grease fittings and protected seals streamline maintenance, ensuring lubrication between service intervals and preserving torque transfer efficiency. The compatibility with standard 1310-series yokes makes installation straightforward, whether you’re performing a routine PM or addressing a driveline anomaly. Proper torque and clean reassembly are essential to maximize life and smooth operation. In short, a reliable U-joint is a cornerstone of driveline integrity, keeping payloads moving and reducing roadside downtime. Source One Parts Center offers this as a compatible, high-quality option.