This aftermarket replacement battery tray hold-down and trunk relocation box is a universal component identified by part number 551181. It is intended to secure and position a vehicle battery in a relocated trunk installation. A battery tray and hold-down assembly supports battery placement and restraint within the intended mounting area. Key Features & Performance. Provides a tray and hold-down arrangement for battery placement. Supports relocation of a vehicle battery to a trunk mounting area. Made from aluminum as identified in the product title. References part number 551181 for comparison during parts selection. Relocating a vehicle battery to the trunk. Replacing a battery tray or hold-down component during vehicle service. Supporting routine battery mounting and positioning work. Product Type: Battery tray hold-down trunk relocation box. General Application: Universal vehicle battery relocation. Q: What does a battery tray hold-down relocation box do? A: It supports battery placement and restraint when a vehicle battery is relocated to a trunk mounting area. Q: How should fitment be verified? A: Compare the complete part number 551181 with the existing component and confirm that the universal tray configuration suits the vehicle and intended mounting location. This is an aftermarket replacement part and is not represented as genuine or original equipment. Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number, model year, or existing part number.