Felt Air filter replaces Echo A226001390, Shindaiwa A226001390 air filter. 102-577. Refer to your manual to match by OEM#. Fits some AH242, AHS242 Hedge Trimmer, C242 Brush Cutter, C344, LE242 Edger, M242 Multi-Tool Powerhead, T242T and T242X String Trimmer