Genuine OEM Jaguar Windshield Washer Fluid Reservoir Cap, part number C2P5559. This cap is designed to seal the windshield washer fluid reservoir, protecting the fluid from contaminants and preventing evaporation. It is typically located on top of the washer fluid tank in the engine bay. Made from durable purple plastic, it features a clear windshield washer symbol for easy identification. Opting for a genuine OEM cap ensures a perfect fit, proper sealing, and resistance to automotive fluids, maintaining the integrity of your vehicle's washer system.