The Kubota W21CKT2605 is a genuine OEM air filter designed for optimal engine performance and longevity in various Kubota machinery. This high-quality filter ensures clean air intake, protecting the engine from harmful contaminants. It is compatible with Kubota B-Series tractors including B2301, B2401, B2601, B2650, B3301, B3350, and B3901 models. It also fits RTV-X series utility vehicles such as RTV-X1100, RTV-X1120, RTV-X1140, and RTV-XG850, as well as ZD-Series zero-turn mowers like ZD1011, ZD1021, ZD1211, and ZD1511. Dimensions are approximately 95 mm length and 51 mm outer diameter, with an inner diameter of 30 mm and a weight of 0.13 kg.