Product Details: The OTR Diesel Oxidation Catalyst for MaxxForce 13 engines ensures you are Ready for the Road Ahead™, removing and oxidizes unburned hydrocarbons, soluble organic fraction, carbon monoxide, and unregulated contaminants from heavy duty, Class 8 trucks’ emissions. This diesel oxidation catalyst also works with the diesel particulate filter to release heat for soot regeneration. FleetPride is your First Click in Heavy Duty®.