What are the benefits of using our Ford OEM parts versus an aftermarket part? You'll get a part that is designed to fit your specific make or model. It's meant to survive the wear and tear associated with your unique car, truck or SUV. An aftermarket part might be mass designed to fit multiple makes and models. It might not fit your specific model. Is there a difference between the two? Absolutely. The OEM part has a higher value because it typically does the job that was intended.