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Hendrickson · Suspension & Steering
9621
In stock · ships from Knoxville
This is a rolling lobe air spring used in heavy-duty trailer air ride suspensions.
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Other applications
Verify suspension model and air spring mounting dimensions; this unit has a 9-inch top plate and a 10.28-inch bottom piston.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 12 of 12.
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It replaces the Hendrickson S-23613 air bag, supporting the trailer load and maintaining a consistent ride height. Replacement is needed when the air spring leaks, shows cracking or dry rot, or the suspension sags unevenly—often caused by age or road debris damage. It is compatible with a wide range of aftermarket equivalents and is a direct fit for Hendrickson trailer suspension systems.
Part Number: 9621
AIR SPRING, S-23613
Unit: ea
Dealer: Knox Trailers
Compatibility, alternatives, and more
Parts commonly needed alongside suspension & steering
