Replace for ONAN # 140-3280, 48-2017 Fits Onan 3600-4000 MICRO QUIET KVD SPEC. A-B , KY SPEC. B-M Generator Size: OD = 3 3/8"(9CM), ID = 2 1/8"(5.5CM) , HEIGHT = 4 3/8"(11CM) This 140-3280 generator filter traps dirt and debris effectively, extending the life of your generator Includes: 1x Air Filter,140-3280 Air Filter for nan generator