The product is a secondary valve for a 1990-1993 Ford Bronco and E,F Series trucks, manufactured by Motorcraft. The valve has the OE/OEM part number E8TZ-9A487-B and the manufacturer part number CX-1236. It does not come with a manufacturer warranty. This part is essential for the proper functioning of the secondary air and smog pump in these specific vehicle models. NOS A-1