Wyo. Stat. § 31-11-105 (2026)

(a) An owner of a vehicle that does not have a vehicle
identification number present or an owner of a vehicle for which
a Wyoming certificate of title has been issued or is required
who replaces any part of the vehicle on which the vehicle
identification number appears or who incorporates a part
containing the vehicle identification number into another
vehicle, shall apply to the department forthwith for a special
vehicle identification number. The department shall determine
that the applicant for the special vehicle identification number
is the lawful owner of the vehicle. An application blank shall
be furnished by the department for the registration of the
special vehicle identification number containing a complete
description of the vehicle, the name and address of the owner,
from whom purchased and other information as required by the
department. The owner shall pay a registration fee of twenty
dollars ($20.00) for the special vehicle identification number.

     (b) In designating special vehicle identification numbers
for vehicles the department shall assign the numbers
consecutively, beginning with the number five hundred one (501),
preceded by the letter "S" and followed by the letter "W" in the
order of the filing of applications for special vehicle
identification numbers. The department shall not register or
reregister any vehicle with a defective vehicle identification
number.