XB-01923-P
Spring
SAF-Holland

A compression-type spring designed for fifth-wheel couplings, this component delivers controlled vertical stiffness and energy storage to accommodate dynamic coupling loads during articulation, decoupling the trailer and tractor for smoother towing. The spring absorbs vertical displacement when a vehicle encounters road irregularities, distributing loads more evenly across the hitch interface and reducing peak stress on mounting hardware, pins, and associated linkages. By maintaining more stable contact between interacting surfaces, it enhances landing stability, coupling reliability, and hitch life, especially under heavy payload conditions or uneven road surfaces. In terms of compatibility, the part belongs to the fifth-wheel family and is selected to match specific load and travel characteristics of standard tractor-trailer configurations. VMRS code 059-001-096 provides standardized classification for spare parts and maintenance workflows, while cross-references are not listed, indicating the need to verify exact fitment with vehicle specifications during inspection or replacement. Category context: 42811 situates it within the fifth-wheel subsystem where precise spring performance is essential for safe, predictable articulation and coupling behavior.