This left-side heel is the replaceable wear component at the rear of the cultivator sweep. It contacts the furrow bottom and protects the sweep body from abrasion as the machine operates. As the heel wears, the sweep loses its designed working depth and the draft load on the tractor increases. This original part is formed to the same profile as the sweep's mounting face, so it seats without gaps that could trap soil and accelerate wear. When installing, clean the mating surface on the sweep and tighten the two mounting bolts to the specified torque.