Notes: CA0131219 DOUBLE U-JOINT B310 55 L706 / DOPPIO GIU is original KOMATSU product. CA0131219 DOUBLE U-JOINT B310 55 L706 / DOPPIO GIU1 is commonly used in transmissions/axles/engines . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849