XA17A24L-P
Top Plate Fifth Wheel
SAF-Holland

In heavy‑duty trailer hitch systems, this top‑plate component serves as the primary load‑bearing surface and mounting footprint for the kingpin interface, enabling secure, repeatable coupling between tractor and trailer. Within the 42763 category, it is engineered to withstand high articulation and repeated vertical and shear forces that occur during docking, turning, and highway operation. The VMRS code 059-001-001 identifies its role in the fifth‑wheel subsystem, guiding maintenance planning, interchangeability, and inventory control across fleets that rely on standardized top‑plate interfaces. Precision machining, durable alloy selection, and tight geometric tolerances help preserve alignment and distribute load evenly across the contact surface, minimizing wear on mating components and extending service life. Benefits include consistent coupling action, reduced kingpin wear, and predictable engagement and release under demanding work cycles, which translates to improved uptime in yards, distribution centers, and long‑haul routes. In practice, this platform is installed as the primary coupling interface on standard semi‑tractor configurations, compatible with common fifth‑wheel jaws and mounting patterns, delivering reliable performance in mixed‑fleet operations where uptime and safety are paramount.