Exterior Parts & Accessories. Engines & Engine Parts. Heavy Equipment Parts & Access. Fuel Injection Pump Assembly 5262669 5290005 For Cummins 4BT 3.9 Diesel Engine. Cummins 4BT 3.9 4BT3.9 Diesel Engine. 1 Pieces Fuel Injection Pump. Compatible with Cummins 4BT 3.9 4BT3.9 Diesel Engine. Please leave your full name, telephone number and full address when ordering. If you need to change the address, you can leave a message. Our 30-day Satisfaction Guarantee assures our customers that they will receive all orders promptly and exactly as described. We understand, however, that occasionally you may want to return the item/s you have ordered.