Front Differential Pinion Seal (38189-8S110) by Genuine®. If your driveline system parts are in need of repair, don’t compromise the performance and safety of your car with suspect, off-brand replacement parts from the local auto parts chain store. On our website you’ll find premium Genuine OE (Original Equipment) replacement driveline and axles parts at great prices. These are the same parts your car left the factory with, made by the brand that provided the parts to the vehicle manufacturer.