JSK37U SERIES - Fifth Wheel

The JSK37U series is a standard specification option at every OEM. This series features the original locking mechanism that all other JOST fifth wheels are based on and sets the industry standard for fifth-wheel construction and functionality. Designed with safety and operator efficiency in mind, the features included in the JSK37U line are included in all other fifth wheel products.

Available with a cushion ring or steel wear ring

  • Infinite adjustment

  • 3-Point Locking System

  • Anti-high coupling lugs

  • Requires only 60lbs of force to open

  • Can be rebuilt on truck in 30 minutes without removing the top plate