XA-H36
Slider Base
SAF-Holland

The adjustable base component of the fifth wheel system delivers versatile positioning for the kingpin interface, enabling precise alignment with varying trailer configurations. Engineered for robust engagement, it combines durable construction with refined machining to maintain alignment under dynamic road forces, contributing to smoother articulation and reduced wear on mating surfaces. The part operates under the VMRS code 059-001-045 and belongs to the Fifth Wheel family, ensuring compatibility with common mounting patterns and related components across many fleets. Its design supports efficient maintenance cycles, simplified inspection, and straightforward replacement when wear emerges on contact surfaces or fastener holes. In practice, this element enhances coupling reliability during fleet operations that require frequent trailer swaps or variable kingpin saddles. The category context underscores its place within the Fifth Wheel family’s critical interface elements, where precision tolerances and consistent load transfer are essential for safety, efficiency, and payload integrity on the road.