The ornamental design for a frontbumper for motorvehicle, as shown and described.
FIG. 1 is a right side perspective view of a front bumper for motor vehicle showing my new design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a right side elevation view thereof;
FIG. 4 is a left side elevation view thereof; and,
FIG. 5 is a top plan view thereof.
The color black indicates color contrast.
The broken line showing of the front bumper for motor vehicle is for the purpose of illustrating portions of the front bumper for motor vehicle and forms no part of the claimed design.