One New Aftermarket Replacement Fits Ford Backhoe Loader Bucket Cylinder Seal Kit That Fits The Following Models: (340, 540, Cylinder: D8Nn-B576-Fb, Between 1978 - Sept. 1981), (340A, 540A, Cylinder: D8Nn-B576-Ec, Between 1984 - May 1985, Cylinder: D8Nn-B576-Fb, Between Oct. 1981 - May 1985), (340B, 540B, Cylinder: D8Nn-B576-Ec, Between June 1985 - Nov. 1988, Cylinder: D8Nn-B576-Fb, Between June 1985 - Nov. 1988), (445, Cylinder: D8Nn-B576-Ec, Between 1984 - May 1985, Cylinder: D8Nn-B576-Fb, Between 1978 - May 1985), (445A, Cylinder: D8Nn-B576-Ec, Between June 1985 - Dec. 1986, Cylinder: D8Nn-B576-Fb, June 1985 - Dec. 1986), (450, Cylinder: D8Nn-B576-Ec, D8Nn-B576-Fb, Between 1987 - Nov. 1988), (455, Cylinder: D8Nn-B576-Ec, D8Nn-B576-Fb, Between July 1987 - Nov. 1988), (545, Cylinder: D8Nn-B576-Ec, Between 1984 - May 1985, Cylinder: D8Nn-B576-Fb, Between 1978 - May 1985), (545A, Cylinder: D8Nn-B576-Ec, D8Nn-B576-Fb, Between June 1985 - Nov. 1988), (555, Cylinder: D8Nn-B576-Ec, Between Oct. 1978 - Oct. 1988), (555A, Cylinder: D8Nn-B576-Ec, Between 1984 - May 1985), (555A-Xl, Cylinder: D8Nn-B576-Ec), (555B, 655A, Cylinder: D8Nn-B576-Ec, Between June 1985 - Oct. 1988), (655, Cylinder: D8Nn-B576-Ec, Between July 1985 - Oct. 1988).Please Note: Your Seal Kit May Look Slightly Different.Rod: 63 Mm, Bore: 90 Mm.Replaces Part Number: 251321 All OEM part numbers and logos are to be used for identification purposes only