Parts & Accessories Spare parts Peace, mercy, and blessings of God be upon you. For sale: Water tank manufactured by Khazanaat Al Wataniya. It was installed on a GMC Sierra single cab, and I believe it fits all vehicles of the same class. The size is over 180 liters, I'm not sure. I bought the Sierra with the tank and its mounting brackets inside the bed, and I have no use for it. Price: 200 (firm).