The product is a windshield washer fluid reservoir tank specifically designed for 94-97 BMW E36 Z3 M3 3 Series vehicles. It is an OEM part with the OE/OEM part number 61 66-8372380 and interchange part numbers 1379054 and 61661379054. This genuine BMW reservoir is a crucial component for ensuring proper windshield washer function in your vehicle, providing reliability and compatibility with the specified BMW models. Vintage