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The Prothane rear upper coil spring isolator for 1965–1995 GM applications is a black replacement pad that cushions the upper spring perch and helps reduce noise and wear. Specified for GM rear upper springs across the listed years, it provides a simple service part for restoring quiet operation and proper seating of the coil spring during suspension reassembly or maintenance.
Prothane 65-95 GM Rear Upper Coil Spring Isolator - Black
