This aftermarket windshield washer fluid reservoir tank is a great addition to your Mercedes-Benz W221 S350. Made of durable plastic, it is designed for easy installation with a bolt-on attachment type. The tank weighs 4 lbs and has a capacity to hold a sufficient amount of washer fluid. It is manufactured in China and comes with part numbers ET91020 and ET072106 for interchangeability and compatibility with OE/OEM part numbers 221-869-1020, 221-869-0208, and 221-869-0072. This reservoir tank is perfect for those looking to replace their old or damaged one. It does not come with any items included and is not a vintage part. Its placement on the vehicle is at the front and it is a type of reservoir with no performance part features. This product is not a universal fitment, so be sure to check the compatibility with your vehicle before purchasing. Exact item is shown. New with partial original packaging. Replaces the following OEM part numbers- 221-869-1020 221-869-0072 221-869-0208. Fits Mercedes-Benz CL550 2009-2014; S350 2012-2013; S400 2011-2013; S550 2004-2013. Fits Mercedes-Benz S63 AMG 2008-2013; S65 AMG 2007-2013 Made in China. No returns if installed. Please review our business policies in our store for information regarding returns, shipping and warranties.