CUMMINS ISM ECM ECU DIESEL ENGINE COMPUTER MODULE EGR PART#3103533 CPL8557 CM875. CUMMINS ISM ENGINE CONTROL MODULE (ECM) P/N 3103533 CPL8557 CM875. MODEL: ISM ENGINE ECM, ECU&#######xA0. This is a&#######xA0; USED &#######xA0;Cummins ISM Engine Control Module (ECM, ECU) Engine Computer Part# 3103533 CPL 8557. &#######xA0;This ECM has been fully tested and inspected and is functioning perfectly. All ECMs are fully tested and certified before being placed into stock. Please give us a call and we will be happy to answer any questions you have!! &#####x200B;&#####x200B;&#####x200B;&#####x200B;&#####x200B;&#####x200B;&#####x200B;Boots and Hanks Truck Parts, Inc. Has the largest selection of used truck parts in Northeastern Pennsylvania. &#######xA0;With locations in Scranton and Harrisburg, Pennsylvania, we sell used truck engines, transmissions, rears, ECMs, body parts, wheels and truck tires. &#######xA0;Boots and Hanks Truck Parts, Inc. &#######xA0;has&#######xA0;an extensive&#######xA0;selection of late model truck parts for sale. &#######xA0;If we do not have the part you are looking for we will do our best to find it for you. &#######xA0; &#####x200B;&#####x200B;&#####x200B;&#####x200B. &#####x200B;&#####x200B;&#####x200B;&#####x200B;&#####x200B;&#####x200B;&#####x200B. Boots and Hanks Truck Parts Inc. Please make sure your part numbers and or serial numbers match the product you&#######xA0;are purchasing. &#######xA0;We are not responsible for a part not fitting correctly. &#######xA0;All products are tested and certified&#######xA0;as “quality used” before being placed into stock. This ECM has been fully tested and inspected and is functioning perfectly.