The drain pump removes the dirty water from the washer machine. This part does NOT come with installation instructions. This original LG Washer Machine Drain Pump originally shipped with the following LG devices: WM3455HW, WM3477HS, WM3477HW, WM3485HWA, WM3488HS/00 This is a true LG part! This item is NEW! Don't see your model number? Send us a message as we are happy to help!