Answer
Oct 24, 2025 - 02:26 PM
A CAT filter refers to a Caterpillar-brand fuel filter, known for its ultra-fine filtration and high capacity. When paired with the Sinister Diesel CAT Fuel Filter Adapter for 2001-2016 GM Duramax 6.6L, it allows truck owners to upgrade from the stock filter to a more durable and efficient option, providing superior engine protection at a fraction of the price of an OEM replacement filter.
