Part number 18-8957-51 is listed on FixIce as relay. It is presented as a replacement part used in repair and maintenance work. Restores electrical switching for startup and cycling when the original relay fails. In practical service work, this type of part opens and closes a power circuit when the machine calls for operation. When this part wears or fails, technicians may notice inconsistent switching that can cause stop and start issues during service checks. For technicians, clear part identification can make the repair process faster and improve confidence before reassembly. A careful service check matters because service work usually includes visual inspection for heat damage and testing for proper switching under load. Service notes and visual inspection are often useful when selecting the correct replacement for the repair. Using the right contactor supports dependable cycling and cleaner power delivery to the load. For repair buyers, ordering by part number helps keep the job moving and reduces delays caused by mismatched parts. Verify the service application and compare the old part during repair prep before installing the replacement component. A replacement that matches the application helps the technician complete reassembly with better fit and fewer delays. After installation, a normal operation check is a practical way to confirm that the repair has corrected the original symptom. A replacement that matches the application helps the technician complete reassembly with better fit and fewer delays. For buyers supporting field repairs, using the listed part number can make ordering and staging parts more efficient. After installation, a normal operation check is a practical way to confirm that the repair has corrected the original symptom. After installation, a normal operation check is a practical way to confirm that the repair has corrected the original symptom.