ISO 4100:1980

Road vehicles — World parts manufacturer identifier (WPMI) code

Specifies the content and structure of an identifier in order to establish, on a world-wide basis, the identification of the manufacturers of parts for road vehicles; this identifier may serve, at the manufacturer’s option, as a substitute or an addition for various national or international systems which already exist. Applies only to manufacturers of parts to be used on road vehicles as defined in ISO 3833.