... 4. Application excavators: CATERPILLAR , VOLVO , KOMATSU , HITACHI , KOBELCO AIR FILTER:1. Application excavator brands :CATERPILLAR , VOLVO , KOMATSU , HITACHI , KOBELCO ... , HALLA , SAMSUNG2. Application excavator models : 20HT-3 , PC200-1/2/3/5/6/7 , PC220-3/5/6 , PC120 ... -3/5/6 , EX300-3/5/6 , ZAXIS55 , ZAXIS70 , ZAXIS100-1/2 , ZAXIS200 , ZAXIS210 , ZAXIS230 , ZAXIS240 , ZAXIS330 , ZAXIS360 , ...