The International 2011 Through 2014 Standard Grade Replacement Diesel Oxidation Catalyst is a reliable and durable solution for vehicles with MaxxForce engines. This direct replacement catalyst restores functionality and ensures long service life. It includes 1 diesel oxidation filter and 2 gaskets, making it a practical choice. Designed to match the fit and function of the original catalyst, this product is not for sale in California and is not CARB compliant. It fits most International 2011-2014 models, including 5500i, 5600i, 5900i, 7600, 8600 TranStar, 9900i, LoneStar, ProStar, and WorkStar 7600. Direct OE replacement number: Navistar 2604039C91.