JOST part description

Features & Benefits

  • Acts as a guide for incoming kingpins during trailer connection
  • Part of the upper fifth wheel assembly where initial contact occurs
  • Helps preserve fifth wheel top plate surface condition
  • Reduces coupling resistance due to offset trailer approach angles

JOST Fifth Wheel Fitting

The JOST Fifth Wheel Fitting acts as a guide piece used in the coupling area where trailers meet the fifth wheel top plate. This fitting is frequently installed to keep trailer kingpins aligned during hook-up and disconnection, minimizing misalignment or damage to the coupling plate. Commonly mounted near the throat of the fifth wheel, the JOST SK73205-07 piece contributes to smoother coupling transitions without excessive side force. 

Product Attributes

Notes Guide Piece

JOST® is a global leader in manufacturing safety-critical components for commercial vehicles. Its products are divided into three categories—vehicle interface, handling solutions, and maneuvering—and are manufactured in its different production sites located in more than 20 countries across five continents. Since it started as a humble forge of ball bearing turntables in 1952, JOST has grown exponentially and has become the leading supplier of landing gears and fifth wheel couplings around the world. Currently, there are five brands under JOST, including ROCKINGER, JOST, TRIDEC, Quicke, and Edbro. All these brands are renowned names in the industry, thanks to their high-quality products and continuous innovation.

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