CFKIT Maintenance Filter kit Compatible with JD 6M iT4 6105M, 6115M, 6125M model deere 331g Filters included Qty Description Replaces Multipack:Pack of 2 Filters included Qty Description Replaces Manufacturer P N 1 Outer Air Filter 6666375 1 Inner Air Filter 6666376 Upon Purchase Filters may vary Between Sure Filter and Sakura 66 inch (93 mm) Thread Size 11 16 16 UN Length 5 6125M Filters included Qty Description Replace After Every (Hours) Manufacturer P N 1 Primary Air Filter Replace after every 1500 hours or 2 years whichever occurs first AL215055 1 Secondary Air Filter Replace at every fourth change of Primary Air Filter