Industrial VR166 Voltage Regulator

The Standard VR-166 voltage regulator is a 12-volt, negative-ground electronic regulator designed to maintain proper charging system voltage in automotive electrical systems. This four-terminal unit is sold as an OE-style Blue Streak replacement by Standard Motor Products, offering a direct-fit option for classic vehicles. Cross-reference listings show VR-166 compatibility with Ford applications from 1962 through 1992, Lincoln from 1963 through 1992, and Mercury from 1963 through 1991, aligning with the regulator’s common use in mid‑century to late‑century American muscle and family cars. Designed as a reliable replacement, the VR-166 aims to restore stable charging to the alternator–battery circuit and help ensure consistent electrical performance in aging vehicle harnesses.