The Cummins 122-0833 Onan Oil Filter fits Onan Generator Models HDKAJ (Spec A-K), HDKAJ (Spec L), and KDKBA (Spec A-E). This oil filter features valves that allow oil to bypass the oil filter during cold starts or if the filter becomes plugged. Please refer to your Operator's Manual for specific maintenance intervals. Measures 3.3"H x 3.4" dia. Measures 3.3""H x 3.4"" dia. | Camping World Cummins 122-0833 Onan Oil Filter, Diesel