The Air Filter 600-185-6120 Cross Reference RS3871 P777869 AF25468 474-00037 Application For Doosan Daewoo 520LC(Unspecified eng). DL300(DL08 eng). DL400(Cummins eng). DL420(Cummins eng). Komatsu D155AX-5; D155AX-5B; D155AX-5SL(SA12140E eng). D155AX-6 (Komatsu SAA6D140E-5 260kW 354hp eng).