If your Mercedes passenger side mirror is cracked or damaged, this replacement glass from ZHENJUN is a solid fix. It's designed to fit a bunch of Mercedes models including A-Class (W176), B-Class (W246), C-Class (W204), CL-Class (C216), CLA-Class (W117), CLS-Class (C218), E-Class (W212), S-Class (W221), GLK-Class (W204), and GLA-Class from specific years (check the listing to confirm your model). The glass comes with a backing plate and features both heating and blind spot assist functions. The heating element uses an upgraded film for fast, even defrosting and fog removal, and it won't peel off over time. The blind spot aid has a two-color warning system – yellow when a vehicle is approaching your blind spot, and red when it's too close. Installation is DIY-friendly: just clip the backing plate onto the motor base and connect the heating and blind spot plugs to your car's existing wiring. It's made to stay secure even at highway speeds. Compatible with OE numbers like 212 810 14 21, 212 810 29 21, and 246 810 12 21. A cost-effective way to restore your mirror's functionality without replacing the whole assembly.