Replacement parts needed to overhaul the motor of the 3M PN28363 Polisher. Genuine 3M polisher 28363 replacement parts are engineered specifically for your 3M polisher 28363. All replacement parts meet the same specifications and design criteria as the original components. You can be assured the replacement parts will fit, form and function the same as or better than the original part, which will get your polisher 28363 back in action.