Reproduction, non functional "dummy" correct looking rev limiter. Also referred to as an electronic engine governor or RPM limiter. These were used on 1970 BOSS 302 engines. Replaces Ford part number DOZF-12450-B.
Note that Ford used a solid state voltage regulator that uses the same case starting in 1966 that has been found on Trucks, Thunderbirds, Galaxies and other full size cars. These units have been known to have engineering numbers of C6AF-10316-A, C6TF-10316-A, and D2HF-10316-AA imprinted on them.