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Meritor Genuine · Air System
3220201A
In stock · ships from Knoxville
This is a press plug kit used in automatic tire inflation systems on heavy-duty trucks and trailers.
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Verified fitment for 6 applications
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All confirmed applications for this part number.
Other applications
Other applications
Intended for axles equipped with automatic tire inflation systems. Verify axle model and spindle diameter is 1.75 inches before ordering. Often listed under tire inflation system components.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 2 of 2.
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The 1.75-inch diameter plug, combined with an O-ring and adhesive, seals the hollow spindle to maintain consistent tire pressure. It is replaced when the plug leaks, causing pressure loss and uneven tire wear, or during axle overhauls. Kits like this fit a range of Meritor, Hendrickson, and Dana/Eaton axle models with hollow spindles.
Part Number: 3220201A
PSI PLUG KIT
Unit: ea
Dealer: Knox Trailers
Compatibility, alternatives, and more
Parts commonly needed alongside air system
