DEF | Diesel Exhaust Fluid | 55Gal. Price: $275.00

For Sale | Free Delivery | 55Gal. Price: $275.00 | DEF Fluid Diesel exhaust fluid DEF, 55 Gal. Drum Barrel. Compare Price Walmart, Napa, Autoparts, Oreilly, Amazon, Northern tool, Grainger, bulk DEF Diesel Fluid (DEF) is an aqueous urea solution made with 32.5% urea and 67.5% deionized water. It is standardized as AUS 32 (aqueous urea solution) in ISO 22241.