Michigan Compiled Laws, Chapter 324. Natural Resources and Environmental Protection § 324.82116

Sec. 82116. (1) A snowmobile that is manufactured after December 1, 1972 for sale in this state shall have an identifying number that is stamped into the frame of the snowmobile or into a plate affixed to the frame and is unique from an identifying number on any other snowmobile. The number shall be stamped in a place where it is easily visible with a minimum of physical effort and it shall be termed the vehicle number. A manufacturer shall furnish to a requesting police agency, to the department of state, and to the department information as to the location of vehicle numbers on snowmobiles it produces. The vehicle number shall be printed on the certificate of registration issued by the department of state to the owner.

(2) Possession of a snowmobile with an altered, defaced, or obliterated vehicle number is a misdemeanor, punishable by imprisonment for not more than 1 year, or by a fine of not more than $1,000.00, or both.