SAFE & SECURE SHOPPING. Diesel 3919846 Fuel Injection Pump For Cummins 4BT 3.9L NO CORE Engine 3919846. Diesel Fuel Injection Pump Replace 3919846 0460424081 for Cummins 4BT 3.9L CORE. Product name: Fuel Injection Pump. Fitment: Compatible with Cummins 4BT3.9 Diesel engine. Fitment Type: Direct Replacement. We at SINOCMP Auto parts market stand behind our product and our customers. We know how anxious you are to receive your order!