OTTO Excavator Engine Parts Frr 6Hh1 Sensor【Air 8976019670 897601-9670 8-97601967-0 For Isuzu OTTO FRR excavator engine part: air sensor compatible with Isuzu 6HH1 engine, used for air-related operational monitoring of the engine. Part nos: 8976019670, 897601-9670, 8-97601967-0