Notes: 129002-22950 RING SET, 0.25 OS is original YANMAR product. 129002-22950 RING SET, 0.25 OS5 is commonly used in transmissions/axles/engines 4TNE84-AF, 4TNE84-BME, 4TNE84-GB2B, 4TNE84-GB2C, 4TNE84-P, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849