Notes: 129903-22950 RING SET, 0.25 OS is original YANMAR product. 129903-22950 RING SET, 0.25 OS5 is commonly used in transmissions/axles/engines 4TNE98-UPOMD, 4TNE98-UPOMD2, 4TNE98-TBA, 4TNE98-TBZ, 4TNE98-BQCKST, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849