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Hendrickson · Suspension & Steering
S-39400
In stock · ships from Knoxville
This is an air spring (air bag) for Hendrickson INTRAAX trailer suspension systems with 23,000 lb capacity and Zero Maintenance Damping (ZMD).
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Requires ride height set to 14-17 inches. Direct replacement for the discontinued Hendrickson S-35510 air spring. Verify your suspension model is INTRAAX 23K ZMD before ordering.
Part data verified against 4 catalog sources
Numbers this part supersedes or interchanges with. Showing 5 of 5.
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It cushions the axle movement, maintains proper ride height, and absorbs road shock to protect the trailer frame and cargo. You would replace it when you notice air leaks, a sagging trailer, or uneven tire wear—common signs the air spring can no longer hold pressure or support the load correctly.
Part Number: S-39400
AIR SPRING
Unit: ea
Dealer: Post Onsite
Compatibility, alternatives, and more
Parts commonly needed alongside suspension & steering
