Feature: 1. Vehicle Fitment: Shock mount repair bracket is replacement for Sierra 1500 1999‑2006, replacement for Sierra 1500 Classic 2007, replacement for Sierra 2500 1999‑2004, etc. 2. OE Number: Bracket replace part number are 523 288, 15090818, 15090825, 15250557. Please double check the OE part number of your item before ordering. 3. Powerful Function: The brackets ensure that the shock absorbers remain in place and effectively absorb shock, vibration and noise, preventing them from entering the cabin. 4. High Performance: Upgraded repair brackets prevent shocks, thereby restoring proper vehicle drivability, critical to driving safety. 5. Sturdy Structure: The brackets are made of excellent steel material, high strength, stable and not easy to fall off, wear resistant, not easy to damage and deformation. Specification: Item Type: Rear Upper Shock Mount Repair BracketMaterial: SteelOE: 523 288, 15090818, 15090825, 15250557Application:Replacement for Sierra 1500 1999‑2006Replacement for Sierra 1500 Classic 2007Replacement for Sierra 2500 1999‑2004Replacement for Chevy Silverado 1500 1999-2006 Replacement for Chevy Silverado 1500 Classic 2007 Replacement for Chevy Silverado 2500 1999-2004 Replacement for Chevy Silverado 2500 Mexico 2005-2006. Package List: 2 x Shock Mount Repair Bracket Note: 1.Please double check the part number of your item, matching information is for reference only.2.If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!