Notes: 24311-000080 O-RING, 1AP8.0 is original YANMAR product. 24311-000080 O-RING, 1AP8.02 is commonly used in transmissions/axles/engines 3TNV74F-SPTB, 3TNV74F-SPTB, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849