Used 1963 pontiac timing cover FULL size and tempest. This is the first cover to have a rubber seal on crankshaft. Some 61 and 62 cars use the 63 for seal upgrade but have the look of the round 4 bolt water pump. Some pitting on the main water nipple. Some pitting on back side seal surface. Note close up pictures. Payment in 5 day PLUS Free shipping and handling to the lower 48.