I do not believe a part like that can wear out. Its just a steel plate. The spring isolator on top of the spring and the bushing where you bolt the spring assembly together could dry out and cause some squeaking though.
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LOST KJ'S
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Current Jeep: 2004 Jeep Liberty
-Atlantic Blue
-Air Ride Rear Suspension ; OME/Rustys Lift ; Powertrax Locker ; Moog Lower Ball-Joints ; 245/70/16 Yokohama Geolander A/T-S's on MOABS ; Flowmaster 50 SUV
Lost #007082
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