These kits contain components designed to restore proper function to the connection point between a semi-tractor and its trailer. The parts included typically consist of pliable materials that allow for movement and reduce friction in the fifth wheel assembly. A common example is a set designed for a specific Holland fifth wheel model, containing several bushings, washers, and possibly fasteners tailored to replace worn elements within that coupling system.
Maintaining the integrity of this coupling mechanism is critical for safe and efficient operation of commercial vehicles. Worn or damaged parts can lead to excessive play, reduced steering control, and increased wear on other components. Replacing these elements according to manufacturer recommendations helps ensure secure trailer attachment, minimizing the risk of accidents and extending the lifespan of the entire fifth wheel assembly. Their introduction addressed a common wear point, providing a cost-effective alternative to complete fifth wheel replacement.