Fitment: Compatible with 2007-2016 Chevrolet Silverado 1500 2500 3500; 2007-2016 GMC Sierra 1500 2500 3500 Feature: High-quality steel with anti-rust oil finish for corrosion protection Fuction: Supports the rear fuel tank and spare tire cradle, maintaining proper alignment under load while reducing frame flex and road vibration Installation: Requires welding to the frame; professional installation recommended Package: 1 x Rear Fuel Tank Support Crossmember and hardware shown in the images. Installation instructions not included