Fit For Mercedes W201 W123 W124 W126 W129 1298690021 Windshield Washer Pump. Part Number: 1238690121/1248690221/1248690321/1248690421. Good working condition and easy to install or replace. The pump efficiently delivers washer fluid to the windshield, ensuring optimal visibility in a variety of weather conditions. The reinforced internal circuitry prevents voltage fluctuations, while the ABS housing withstands extreme temperatures for year-round reliability.