503289036 Husqvarna Piston Rings (2 rings) superseded to 576818401

503289036 Husqvarna Piston Ring superseded to 576818401.  No original manufacturer’s packaging is available.  Fits Husqvarna 362, 362EPA, 371, 371EPA, 372, 372EPA Chainsaw; 371K, 371KEPA, 375K Cut Off Saw