This complete AAC-WC2/30 air filter kit is an adaptable replacement designed for a range of small diesel engines, including Lombardini 15LD series (15LD225, 15LD315, 15LD350, 15LD400, 15LD440), Yanmar L series (L48, L70, L100), and Kohler KD series (KD150, KD350, KD400, KD420, KD440). It effectively filters airborne particles to protect the engine and maintain optimal performance. The kit typically includes a pre-filter for enhanced filtration. With an outer diameter of 51 mm and a height of 95 mm, it provides a precise fit for compatible applications.