Jost air slide fifth wheel now standard on Pete Model 579

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Updated Jan 23, 2019

The Jost JSK37 12-inch inboard air slide fifth wheel is now standard on the Peterbilt Model 579 effective Jan. 1, the company announced Tuesday.

The base of the new Jost JSK37 inboard slider is 23 pounds lighter than previous models.

“We are pleased that Peterbilt has made the lightweight slider JSK37 standard on their Model 579 trucks,” says George Smith, senior account manager for Jost International. “In addition to the weight savings Peterbilt customers will realize, they will also experience other benefits of Jost fifth wheels that include ease of use, infinite adjustment possibilities, and reliability.”

Jost says its fifth wheels are the simplest and safest design on the market with only four moving parts. The positive coupling design ensures a true connection. Upon contact, the spring-loaded steel locking bar automatically slides into position securing the kingpin. The company offers a five-year warranty on all of its cast ductile iron top plates.