Vehicle Compatibility - Engineered exclusively compatible with 2016-2018 GMC Sierra 1500 (sub model: Base, Denali, SLE, SLT) ; Compatible with 2019 GMC Sierra 1500 Limited Directly Replace - Replacement for 23381977, GM1062116(Left); 23381978, GM1063116(Right) Easy to Install-Simply replace using bolts. Please note: hardware and instruction are NOT included High-Grade Durability - Reinforced steel with electrophoresis finish. Protect from rust and off-road effect Stability Upgrade- Reinforces sagging bumpers. Prevents radiator/headlight damage from transfer