602-JJ-14 is a Marathon brand oil filter for automobiles. It is designed for larger filter housings and is designed for superior filtration performance for gasoline and diesel engines. The filter is designed to reduce the amount of dirt, sludge, and other contaminants from entering your engine, extending the life of your engine and parts. It also helps improve engine performance and fuel economy, as well as reduce engine noise and vibrations, thus improving overall engine performance. The filter includes a check valve, which prevents oil siphoning during high rpm acceleration. It is a direct replacement filter for many brands, including GM, Ford, Toyota, Honda, Nissan, and Volkswagen.