Notes: 124005 BACK-UP RING 170.1X2.95 is original CARRARO product. 124005 BACK-UP RING 170.1X2.955 is commonly used in transmissions/axles/engines 129691, 141179, 141180, 141313, 142095, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849