Notes: 121254-77790 SCREW 4 is original YANMAR product. 121254-77790 SCREW 45 is commonly used in transmissions/axles/engines 4TNV98-YTBL, 4TNV98-YTBL2, 4TNV88-BKMSF, 4TNV88-BDMSF, 4TNE88-EMS, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849