Upgrade your vintage farm equipment with the Napa Echlin VR851SSB Voltage Regulator, designed specifically for John Deere, Case, Allis-Chalmers, and other classic models. This polished finish regulator ensures a perfect fit with its bolt-on mounting style, avoiding the need for complicated installations. Proudly made in the United States, this voltage regulator is a genuine NAPA part, carrying the VR851SSB manufacturer part number. It's important to note that this is a vintage part, ensuring compatibility and performance that match the original specifications. This item is not a performance part and is not intended for universal fitment. The Napa Echlin VR851SSB is a voltage regulator designed for specific agricultural and industrial applications, compatible with equipment from manufacturers like John Deere, Case, and Allis-Chalmers. It is engineered for 6-volt systems with a 4-amp output, featuring an insulated base and a flat bracket for mounting. The coil resistance ranges between 16 and 21 ohms, ensuring reliable performance in regulating voltage for these systems. Napa Echlin products, including the VR851SSB, are manufactured to meet or exceed original equipment specifications, emphasizing durability and quality. They are produced in facilities certified to TS16949 and ISO9001 standards, with high-quality aluminum contacts contributing to longevity. This part is often marketed as a premium aftermarket solution for vintage or specialized machinery requiring a 6-volt voltage regulator. Exact item is shown. Vintage new old stock item with original non-retail packaging. 4 terminals. Includes the instructions shown. Made in USA. No returns if installed. Please review our business policies in our store for information regarding returns, shipping and warranties.