The Mack MR 1991 Through 2003 Heavy Duty Windshield Washer Fluid Reservoir is a reliable and practical solution for your vehicle. Made with durable plastic construction material, this reservoir is a direct replacement for easy installation. It comes as a complete assembly, including the reservoir and reservoir cap. Designed to withstand excessive heat and vibration, it ensures reliable performance. Specifically designed for most Mack MR 1991-2003 models, including MR600K and MR600P submodels, this reservoir is a direct OE replacement with the number 25128217. Upgrade your vehicle with this high-quality washer fluid reservoir for trouble-free use.