Sierra International 18-2794-1 Marine Lower Unit Seal Kit for Yamaha Outboard Motor Designed for: Engine Number: 774860Replaces: 6F3-W0001-21-00, 6F3-W0001-C1-00 6E5-W0001-51-00, 6E5-W0001-F1-00 6G5-W0001-21-00, 6G5-W0001-C1-00 Number: 18-2794-1Replaces: 6F3-W0001-21-00, 6F3-W0001-C1-00 6E5-W0001-51-00, 6E5-W0001-F1-00 6G5-W0001-21-00, 6G5-W0001-C1-00 Number: 18-2794-1Replaces: 6F3-W0001-21-00, 6F3-W0001-C1-00 6E5-W0001-51-00, 6E5-W0001-F1-00 6G5-W0001-21-00, 6G5-W0001-C1-00