The ornamental design for a liner for an engineblock, as shown and described.
FIG. 1 is a top, front perspective view of a liner for an engine block according to our design;
FIG. 2 is a front elevational view thereof, a rear elevational view thereof being a mirror image of the front elevational view, and left and right elevational views thereof being the same as the front and rear elevational views, respectively;
FIG. 3 is a top plan view thereof;
FIG. 4 is a bottom plan view thereof; and,
FIG. 5 is a cross-sectional view along line 5-5 of FIG. 3, a cross-sectional view opposite the cross-sectional view along the line 5-5 being a mirror image thereof.
The broken line in FIG. 3 represents a cross-sectional identifier and forms no part of the claimed design.