5677631 ECM Engine Control Module CM2450 B For Cummins. The connector interface is slightly damaged. (As showed in the photos) It can be used normally. We guarantee to provide reliable products to all customers. Please confirm the product model and adaptability before placing an order. The product is guaranteed for three months after receipt. · Specialize in Diesel Engine and Part Resources. · Certified Cummins Repair Shop. · Cummins Authorized Dealer. · Genuine New, New Old Stock, OEM, Good Used, Reman, Aftermarket.