S&B Filters is a manufacturer of cold air intakes, filters and other performance parts, specializing in diesel/gas trucks and SUVs. More than 30 years ago, S&B Filters started with a simple mission: to become a manufacturer of the most technically advanced high-performance filter on the market. Holding true to their goal, they engineer intake systems to greatly reduce airflow restriction, while still protecting your engine. They test their products against the competitors, following ISO 5011 standards. They keep their quality high and pricing low by making almost everything themselves in the U.S.