Fitment: Compatible with 2015-2018 Chevy Silverado 1500 all Cab Models.Compatible with 2015-2018 GMC Sierra 1500 all Cab Models.Compatible with 2015-2019 Chevy Silverado 2500 3500 all Cab Models.Compatible with 2015-2019 GMC Sierra 2500 3500 all Cab Models.Compatible with 2019-2021 Chevy Silverado 1500 regular cab ONLY.Compatible with 2019-2021 GMC Sierra 1500 regular cab ONLY.Compatible with 2020-2021 Chevy Silverado 2500 3500 regular cab ONLY.Compatible with 2020-2021 GMC Sierra 2500 3500 regular cab ONLY. OE Standard: Excellent durability.Complies with Original Equipment (OE) standards. Interchange Part Number: 84900397. Sealed Design: CNNELL Brake Lights are precise molding designed by our experienced engineers, it has fully-sealed structure and one-way vents, which prevent moisture and work well in any bad weather. Excellent Material: Made of high-quality polycarbonate and ABS materials, which is sturdy, durable, and not easily deformed.Bulb specification: 921 plug-in bulb (12V, 16W) white * 3. SAE/DOT approved:This product undergoes strict quality control, with a sturdy shell that can resist collisions and vibrations.Polycarbonate Lens resistant to cracks and damage. High Mount 3rd Third Brake Stop Light Cargo Lamp Compatible with Chevy Silverado GMC Sierra 1500 2500 3500 2015-2021 Red Lens