The valve cover gasket is pretty robust, very little risk of damaging it, definitely reusable, don't buy one. If one very carefully removes the right engine cover, gasket 5JW-15456-11-00 will be oK, however, it sometimes can get damaged so best have a spare on hand (we do, I keep one with the shim kit). Shims, we have restocked the shim kit several times out of our own pockets, and if you need shims, we'll twist your arm for a donation. Two O-rings are needed for the coolant pipe, 93210-18417-00 (we have spares also).