The Peterbilt 389 Polished Stainless Steel DEF Tank Top Cover is a practical and durable solution for large DEF tanks. Made with 16 gauge #8 304 non-directional polished stainless steel, this product offers excellent protection and a sleek appearance. It conveniently mounts directly to existing OEM brackets using OEM hardware, making installation a breeze. Designed to fit most Peterbilt 389 models from 2022 and newer with large DEF tanks, this tank top cover is a reliable choice for truck owners looking to enhance their vehicle's functionality and aesthetics.