Notes: 171008-77420 BEARING, BALL is original YANMAR product. 171008-77420 BEARING, BALL5 is commonly used in transmissions/axles/engines 4TNE98-UPOMD, 4TNE98-UPOMD2, 4TNV98-ZNSAD, 4TNV98-ZNSADC, 4TNV98-ZGGKF, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849