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Hendrickson · Suspension & Steering
8709
In stock · ships from Knoxville
This is a Hendrickson air spring (air bag) for heavy-duty trailer suspensions.
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Other applications
Other applications
Verify ride height, top plate diameter, and bottom stud/sleeve mounting dimensions before ordering. Commonly used on many Hendrickson air-ride trailer axles.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 9 of 9.
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It replaces worn or leaking bags on Hendrickson Intraax AAT-23K and similar systems with 13.5 to 19 inches of ride height, restoring proper load support, ride quality, and maintaining correct trailer height. Air springs deteriorate over time from rubber fatigue and road debris, causing sagging, uneven tire wear, and poor braking balance. Genuine Hendrickson bags include a proprietary internal bumper and flex member for improved durability.
Part Number: 8709
AIR BAG HENDRICKSON S-21800
Unit: ea
Dealer: KP Services Crossville
Compatibility, alternatives, and more
Parts commonly needed alongside suspension & steering
