Notes: 129903-22050 RING SET, PISTON is original YANMAR product. 129903-22050 RING SET, PISTON5 is commonly used in transmissions/axles/engines 4TNE98-UPOMD2, 4TNE98-UPOMD, 4TNE98-TBA, 4TNE98-TBZ, 4TNE98-BQCKS, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849