Notes: 129002-22960 RING SET, 0.25 OS is original YANMAR product. 129002-22960 RING SET, 0.25 OS5 is commonly used in transmissions/axles/engines 4TNE84-BAG, 4TNE84-EAD, 4TNE84-EAD1, 4TNE84-EAF, 4TNE84-EKRV, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849