The ornamental design for an endcap for a vehicle tire deflation device, as shown and described.
FIG. 1 is a front perspective view of the end cap for a vehicle tire deflation device;
FIG. 2 is a front perspective view thereof;
FIG. 3 is a front elevation view thereof;
FIG. 4 is a right side elevation view thereof, the left side view being a mirror image thereof;
FIG. 5 is a rear elevation view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof; and,
FIG. 8 is a rear perspective view thereof.
The broken line showing of a vehicle tire deflation device and indicia is included for the purpose of illustrating portions of the “article” and forms no part of the claimed design.