CUMMINS ISL 8.9L ECM ECU CPL3664 DIESEL ENGINE COMPUTER MODULE PART# 5290170. CUMMINS ISL 8.9L ENGINE CONTROL MODULE (ECM) P/N 5290170 CPL3664 CM2350. MODEL: ISL ENGINE ECM, ECU&#######xA0. This is a&#######xA0; USED &#######xA0;Cummins ISL Engine Control Module (ECM, ECU) Engine Computer Part# 5290170 CPL 3664. &#######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.