Notes: 199-0681/GEUG45310 WASHER 6.2X16.5X2 MAT101 CARRARO STD 1-0 is original CATERPILLAR product. 199-0681/GEUG45310 WASHER 6.2X16.5X2 MAT101 CARRARO STD 1-01 is commonly used in transmissions/axles/engines . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849