Is your Mercedes C-Class (models like W203 C180, C200 or W204 C230, C300, etc.) not spraying windshield fluid anymore? Or maybe it's gotten weak and pathetic? Chances are, the washer pump has called it quits. This is a direct replacement pump designed to be compatible with OEM part number A2108690821 (also fits A2108690921). It's made from quality materials to be durable, waterproof, and provide strong, reliable water pressure to get your windshield clean. Replacing it yourself can be a pretty straightforward DIY job if you're handy, and it'll save you a trip to the mechanic. The package includes one pump. A super important tip from the manufacturer: ALWAYS make sure there's enough washer fluid in the reservoir before using it! Running the pump dry can overheat and burn out the motor in seconds, and you'll be right back where you started. Please double-check the compatibility list against your specific Mercedes year and model before ordering. Also, due to manual measurement, there might be a 1-3cm variance. If you have any questions during installation, their customer service is there to help. Get your windshield spray back in action!