Internal water filter CS-52, 640565 for Siemens refrigerators, Bosch, Siemens, Küppersbusch, Neff, and Gaggenau side-by-side refrigerators, with a bayonet connection. It also replaces CS-51, 640565, 55866-05, 55866-06, CS-450, CS-452, 70020002518, 5553629EVOLFLTR10. Suitable for approximately 500 refrigerator series, including B20CS50SN800 refrigerator series, B20CS80SN, and many others. The water filter consists of 2 filtration stages. The first stage is a sediment filter that removes suspended particles and micro-sediments such as rust, sand, lime particles, etc. The second stage is activated carbon, which removes mechanical impurities, pesticides, heavy metals, many organic chemicals, and up to 86% of chlorine. This improves the taste, which you can not only smell and taste but also see.

Bosch Art.: 640565, Part No. 55866-05/70020002518 for CS-452 filter system. Pressure: 25-125 psi, Temperature: 4.4-37.8 °C, Capacity: 5678 liters, max. flow per minute: 1.9 liters.

Filter replacement: For health and technical reasons, our filter manufacturers generally recommend replacing the filter every 6 months, even if the filter has a larger capacity. According to the recommendations of the appliance manufacturers, you should always replace the water filter when:

• the corresponding warning light on your refrigerator lights up (depending on the model)
• the refrigerator has not been used for an extended period
• there is a development of odor or cloudiness in the water
• or as a precaution, at least every 6 months

Further information can be found in the user manual of your device.