Buy Replacement Parts for your Farm Truck, Seed Tender or Grain Cart Roll Tarp Systems. Agri-Cover, Inc. have the replacement parts you need for your farm truck, seed tender, and grain cart roll tarp system. Our website contains detailed numbered drawings which makes it easy for you to find the exact part you need. Agri-Cover, Inc. believe that properly covering your property means increased profits for your business. By preventing the loss of commodities while in transit, you can ensure that your inventory is safe and is not exposed to the elements. Safety is our highest priority, which is why we only sell high quality replacement parts manufactured in Jamestown, North Dakota to meet the most rigid safety standards.