Genuine OEM Toyota Packing, part number 85319AA020. This packing component is an integral part of the windshield washer fluid reservoir and hose system, designed to create a seal and prevent leaks. It ensures the integrity of the fluid delivery system. Manufactured to exact specifications for a precise fit, guaranteeing effective sealing and reliable operation. Genuine OEM parts are essential for the proper functioning and longevity of your vehicle's fluid systems.