AcDelco DEF (Diesel Exhaust Fluid), 2011-2025 LML/L5P/L5D/LM2/LZ0

Fits: 2011 thru 2025 Chevy Silverado/GMC Sierra 2500HD/3500HD/4500/5500/6500 L5P/L5D & 2020 thru 2024 Chevy Silverado/GMC Sierra 1500 LM2/LZ0

(DEF) Diesel Exhaust Fluid is a urea-based chemical reactant designed specifically for use in SCR systems to reduce NOx emissions.