Air Filter ECHO BLOWER PB-403, PB-403 H, PB-403 T, PB-413, PB-413 H, PB-413 HT, PB-413 T, PB-500, PB-500 H, PB-500 T, PB-603, PB-611, PB-620, PB-620 ST, PB-650, PB-650 H, PB-650 T, PB-651 H, PB-651 T, PB-755 SH, PB-755 ST FEATURES: LENGTH: 104.5 mm WIDTH: 66.5 mm HEIGHT: 34 mm REFERENCE NUMBER : 176-123 ORIGINAL CODE : A226-00031 , A226-00032 ECHO