Off Road Equipment Parts specializes in genuine surplus parts for Caterpillar equipment, but what are surplus parts? Surplus parts are acquired from sources all around the world and were either overstock, non-returnable or slow moving to their needs at the time. We purchase these surplus inventories at substantial savings and pass that savings right to you, our customer. When we say an item is genuine, that means it is a 100% genuine OEM product, usually Caterpillar, and often in the original packaging. We also offer a vast selection of new aftermarket, rebuilt and used parts for Caterpillar, Komatsu and other popular heavy equipment manufacturers.