Notes: 24351-030750 O-RING, 1A3075 is original YANMAR product. 24351-030750 O-RING, 1A30755 is commonly used in transmissions/axles/engines 4TNV94L-XHYB2, 4TNV94L-XHYB, 4TNV94L-XHYB2, 4TNV94L-XHYB, 4TNV94L-PLK2, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849