Product Name: Fuel Injection Pump. Fitment: Fit For Cummins 4BT3.9 Diesel engine. Fitment Type: Direct Replacement. For Cummins 4BT3.9 Diesel engine 3919846. Service to the heart, quality to the gold. For Case Excavator Cummins 4BT 3.9L Diesel 3919846 Fuel Injection Pump NO CORE. If there is any fault or problem with the product, please don’t be shy to express it, we will solve it at the first time.