The Napa Echlin VR851SSB voltage regulator is a high-quality replacement part designed for John Deere, Case, and Allis-Chalmers tractors. Made in the United States, this bolt-on regulator features water-resistant and heat-resistant properties, making it durable and reliable for easy installation. With interchange part numbers VR214, VR851, and R195, this vintage part ensures a perfect fit for your classic tractor while providing essential voltage regulation for optimal performance. The polished finish adds a sleek touch to this essential component, ensuring a smooth and efficient power supply for your vehicle. 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.