Notes: 42T-23-H0P47 O-RING 4450 2-246 113.89x3.53 is original KOMATSU product. 42T-23-H0P47 O-RING 4450 2-246 113.89x3.531 is commonly used in transmissions/axles/engines . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849