Hey there, if you're hearing clunks or feeling extra vibrations from the rear of your Mercedes C-Class, it might be time for a new strut mount. This A-Premium part is a direct replacement for the rear left or right strut mount (top mount) on a bunch of W204 C-Class models. We're talking about the C250 (2012-2014, both the 1.8L and 2012 3.5L), C300 (2011 & 2013 with the 3.0L or 3.5L), C350 (2011-2014), and even the beastly C63 AMG (2010-2015). Just a heads up – this only fits models WITHOUT the electronic damping system (no ADS). The OEM part numbers it replaces are A2043201073 and 2043201073. It's sold as a single piece, so order one for the side you need or two for the pair. This mount is super important because it acts as a cushion between the strut and the car's body. It locks everything together securely while damping out road noise and vibrations, making your ride quiet and smooth again. It's a quality aftermarket part that meets or exceeds OE specs. Installation is pretty straightforward if you're handy with suspension work, but a shop can knock it out quick. Comes with a solid 1-year unlimited-mileage warranty, so you can buy with confidence. Get your Merc riding like it should.