KP-0414
Kingpin
SAF-Holland

Kingpin with a 3.5-inch lock size and an overall thickness of 0.38 inches, delivering a more robust locking interface for steering knuckle assemblies that require a larger locking footprint. The VMRS code anchors this part within the same steering and alignment family, prompting periodic checks on lock integrity, mounting surface cleanliness, and seal condition to sustain stable steering geometry under load. The larger lock size can enhance resistance to lateral movement and reduce the likelihood of slippage during high-demand driving scenarios, including heavy traffic, mountain grades, and brisk braking. Compatibility hinges on knuckle design, bore tolerance, and the corresponding locking mechanism. In practical terms, this variant benefits operators seeking improved steering stability, particularly in fleets with a mix of heavy tractors and rugged trailer configurations, where consistent pin engagement and secure locking contribute to safer, more predictable handling at highway speeds and during agile maneuvers.