Piston Assly .Dia 197 For Air Compressor Trc 2507, Consist Of Six Items Of De Tail Are Below. S.No. Description Part No. Qty. Kit Piston Ring Consist 022401079 Item 1 To 3 1. Ring Plain Compression 1. 2. Ring Steeped Compression 1. 3 Ring Oil Control 2. Piston With Gudegon Pi (Incl. No. 4To 5 000477820 4 Piston Dia 197 1. 5 Gudgeon Pin 1. 6. Circlip, In Ternal Dia 30 000917230 2. ]