The John Deere AL230928 is a genuine OEM Diesel Exhaust Fluid (DEF) tank specifically designed for various John Deere 6M, 6R, and 7R Series Tractors. This essential component stores the DEF solution, which is crucial for the Selective Catalytic Reduction (SCR) system. The DEF is injected into the exhaust stream to chemically reduce harmful nitrogen oxide (NOx) emissions, helping the tractor meet environmental regulations and maintain efficient engine performance. This DEF tank measures approximately 762 mm in length, 457.2 mm in width, and 457.2 mm in height, with a weight of about 6.35 kg.