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Knox Trailers · Suspension & Steering
8729
In stock · ships from Knoxville
This is a rolling lobe air spring (air bag) used in heavy-duty trailer suspensions, specifically for the Meritor MPA Right Hand P11 system.
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Right-hand side (RHP11) designation. Verify fitment with your suspension's original part number (e.g., Meritor 202796, A-2258F1410) before purchase.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 11 of 11.
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It replaces the Arvin Meritor A-2258F1410 and 202796 air springs, as well as the Firestone W01-358-8729. The air spring provides cushioning and load support, and is commonly replaced when it leaks, cracks, or fails to maintain proper ride height. It is sold individually and should be verified for correct mounting hole pattern and stud configuration before installation.
Part Number: 8729
AIR BAG RHP11 A-2258F1410
Unit: ea
Dealer: Knox Trailers
Compatibility, alternatives, and more
Parts commonly needed alongside suspension & steering