Authentic Caterpillar 256-8753 fuel water separator made in the USA. Don't settle for any other brand! This filter is commonly used on the following Caterpillar engines: C11, C13, C15, 3306, 3406, 3406B, 3406C, 3406E, C-10/C-12, C-15/C-16 and more. Check your owners manual to confirm fitment.