Maximize the exterior finish of your Peterbilt 579 with stainless steel fairing DEF fill area trim. This aftermarket trim is intended to provide a clean, polished accent around the DEF fill area located on the side fairing. Designed for Peterbilt 579 trucks from 2013 through current applications depending on configuration, the trim is available in versions with or without a DEF cutout. Made from corrosion-resistant stainless steel, it helps maintain a consistent appearance while standing up to demanding road conditions. The piece is sold individually and is engineered for straightforward installation using standard mounting methods. Made in the USA and backed by a warranty against defects in workmanship and materials, this DEF fill area trim is a practical option for drivers looking to refresh worn exterior details or add a subtle stainless steel accent to their truck's fairing.