FIG. 1 is a front and upper perspective view of an air compressor cylinder housing showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a top plan view thereof;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is a left side elevational view thereof;
FIG. 7 is a right side elevational view thereof;
FIG. 8 is a rear perspective view thereof;
FIG. 9 is a front and bottom perspective view thereof;
FIG. 10 is a front and upper perspective view thereof, the recesses and the protruded bulges depicted by means of broken lines being for illustrative purposes only and forming no part of the claimed design; and,
FIG. 11 is a rear perspective view thereof, the recesses and the protruded bulges depicted by means of broken lines being for illustrative purposes only and forming no part of the claimed design.