This Sierra Johnson Evinrude 35/175 HP oil seal crankshaft double lip is a high-quality replacement part for your outboard engine. It is designed to fit perfectly and provide a reliable seal for your crankshaft. The part is made in the United States and is specifically designed for Sierra brand engines. The manufacturer part number for this item is 331103 18-8307. It is suitable for use with a variety of different outboard engines, so be sure to check your owner's manual or contact your manufacturer if you are unsure. This item is categorized as a powerhead component and is perfect for anyone looking to replace their crankshaft oil seal.