Front Cover Seal for Ford 265-351W 1984 & Prior. This is the ‘rear load’ seal for 1958 through 1984 Ford engines. This seal loads from the engine side of the timing cover; shaft diameter is the same as later versions but later timing covers were changed to allow seal replacement from the front without removing the timing cover. Material: Poly-Acrylic Rubber. Package Contents: 1 Piece.