FK-4006AB Primary and Safety Air Filter Set

The FK-4006AB is a matched two-stage engine air filter set consisting of the FK-4006A primary element and the FK-4006B inner safety element.

The outer filter corresponds to the Komatsu 600-185-6110 / Caterpillar 142-1340 family and can be identified through established replacement references including Donaldson P777868, P781640, P812559 and P608885, Fleetguard AF25627 / AF25454, MANN-FILTER C 32 1700/2 and Sakura A-8579.

The inner safety element corresponds to 600-185-6120 / Caterpillar 142-1403, with established replacements including Donaldson P777869, Fleetguard AF25468, MANN-FILTER CF 18 190/2 and Sakura A-8580.

Komatsu identifies 600-185-6100 as the complete air filter kit, while Sakura identifies the equivalent primary-and-secondary combination as A-8579-S.

600-185-6110 / 600-185-6120 Air Filter Cross Reference