Holstein Engine Cooling Fan Switches are direct OE replacements for your factory originals that offer perfect fit, form and function for flawless operation that restores your vehicle to showroom levels of performance. Switch housings are made from premium quality reinforced plastic to ensure rugged, long term performance and superior reliability. OE connectors and terminals made from premium materials are used to ensure an accurate, firm connection to the vehicle's wiring harness. All Holstein electrical components are rigorously tested to meet or exceed OE manufacturer specifications. Backed by Holstein's 3 year/36k mile warranty - we believe in our parts and our warranty shows it! Arrives packaged in a Zip-Loc style anti-static bag that protects the electronic circuitry and components.