OTTO Nkr 4Jb1 Excavator Parts Diesel Engine Oil Filter Assembly 8941685200 894168-5200 8-94168520-0 For Isuzu The OTTO Nkr 4JB1 Excavator Parts Diesel Engine Oil Filter Assembly, with part number 8941685200 (also noted as 894168-5200 or 8-94168520-0), is a critical component designed to maintain the health and efficiency of Isuzu diesel engines in excavators.