Found on direct drive crank assemblies. This plate sits inside the larger bearing plate, and stops the crank system from moving to far forward. A common symptom where this plate is required, is if the ratchet pawl is moving off the ratchet gear when raising. Product notes Images 1 and 2 show the actual product. Images 3 and 4 show the application on the part. The black bearing reinforcement plate is not included with this sale. Measures 3-5/8 inches wide by 2 inches tall 1-3/16th inch inside diameter hole. Part number 4756-8321