Original Name / Part No.: 8919Part location: Battery areaProduct major functions & usage: Stabilize the battery and perform heat cooling.Accessories:Battery Hold-Down 1pcFoam 1pcMajor advantages of upgrading to this part/product:1. Made with a quality light weight high tensile strength aluminum 6061 T6 for greater support and durability.2. A great material for heat cooling. The pattern can also help cooling down the heat from the battery.3. Additional foam is provide to hold the battery better and more stable.