I claim the ornamental design for a valve cover, as shown and described.
FIG. 1 is a perspective view of the valve cover;
FIG. 2 is a front view of the valve cover;
FIG. 3 is a back view of the valve cover;
FIG. 4 is a top view of the valve cover;
FIG. 5 is a bottom view of the valve cover;
FIG. 6 is an enlarged left-hand view of the valve cover; and,
FIG. 7 is an enlarged right-hand view of the valve cover.
The valve cover is useful for being positioned over an original equipment or aftermarket valve cover to enhance the aesthetic appeal of the engine of a vehicle. The valve cover can be brushed aluminum and could contrast an underlying valve cover if the underlying valve cover were painted some color, such as the color of the vehicle for example.
The broken line showing of portions of a valve cover is included for the purpose of illustrating environmental structure and forms no part of the claimed design.