This is an OEM part. It works as it should - many of these seals last 200,000 miles or more - I have! Be sure to install the gasket with the rubber gasket edge facing out. The seal comes with the edge out - just slide it over the crankshaft. Warning - there are some YouTubers who incorrectly point the edge of the gasket towards the crankshaft. Good luck - replacing this part is hard work!