Ford Mustang 46L Engine Blue W

Every paint daub, grease-pencil slash, or marker scribble you find on your Mustang's modular has meaning, and they occur at various points along the assembly process, often as task-completion verifications. The blue "W" on this front cover was already on the Mustang engines as they approached the final inspection station (you can see them in our lead shot), but the black initials were added right at this final station as some final component placements were verified. View Related Article