Windshield Wiper Fluid Reservoir Cap Genuine Mercedes

This is a genuine Mercedes-Benz Windshield Wiper Fluid Reservoir Cap for A124, R129, W123, and W126 model vehicles. There are two types of washer caps that fit the R129, so ensure that this is the correct one. This part is a screw-on cap, if yours is not, the snap-on Windshield Wiper Reservoir Cap is the part you need. It is found under the hood, and secures onto the windshield wiper reservoir. It is only sold as the cap, it does not include the connection piece on top of it.