The Kärcher 90016640 Suction Connection Set is a genuine OEM accessory designed for Kärcher high-pressure cleaners. This set enables the use of alternative water sources, such as rainwater butts or water tanks, by providing a secure and efficient connection for drawing water. It is essential for extending the versatility of your Kärcher pressure washer, allowing operation independent of a direct tap connection. The set includes a 3.5-meter long vacuum-proof suction hose, a suction filter with a check valve, and a universal connector, ensuring quick and easy installation.