For more than 30 years, DENSO has been building the parts that keep the most powerful commercial trucks and equipment in operation, on the highway and off. We know that every hour a truck or piece of equipment spends out of commission costs you money. That’s why everything we make is built with the highest precision and craftsmanship to exact OEM standards. DENSO Heavy Duty manufactures and sells only OE quality parts that are made to be durable, dependable and long lasting, so that you don’t have to worry about down time. It’s that simple. These turnkey products meet over 95% of the demand for heavy duty aftermarket Diesel Particulate Filters and Diesel Oxidation Catalysts, including trucks meeting 2007, 2010 or 2013 Federal emissions requirements. Diesel Particulate Filters remove 85% of diesel particulate matter, capturing over 99% when combined with a Diesel Oxidation Catalyst. All part numbers meet strict Environmental Protection Agency (EPA) emissions control regulations and available for purchase in 49 state (except California), Canada and Mexico.