Notes: 24341-000500 O-RING, 1AS50.0 is original YANMAR product. 24341-000500 O-RING, 1AS50.05 is commonly used in transmissions/axles/engines 3TNE78A-BME, 3TNE78A-BME, 3TNE78A-EHP, 3TNE78A-EHP, 3TNE78A-EMG, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849