This OEM Karcher piston kit, model 8.933-023.0 (part number 89330230), is designed for use with Legacy Hotsy pressure washers. It features a 15mm piston suitable for 1 cylinder systems, providing a genuine replacement part for maintaining the performance of your pressure washer. The kit is specifically crafted by Kärcher to ensure a proper fit and functionality within the Legacy Hotsy machine, offering a reliable solution for replacing worn or damaged components.