Notes: 24321-000650 Top Housing O-ring is original YANMAR-MARINE product. 24321-000650 Top Housing O-ring5 is commonly used in transmissions/axles/engines 4TNV94L-XHYB, 4TNV94L-XHYB2, 4TNV94L-PLK, 4TNV94L-PLK2, 4TNV94L-PIKA, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849