The NOS NAPA FS 110 Engine Coolant Temperature Fan Switch is a reliable and high-quality component for your vehicle's engine cooling system. Produced by NAPA Echlin, a trusted brand in automotive parts, this fan switch has a manufacturer part number of FS110. Although it does not come with a manufacturer warranty, you can trust in its durability and performance to keep your engine running smoothly. Upgrade your car's cooling system with this essential part that is sure to meet your needs.. dad  bought this new, never installed it.