NEW Fuel Injection Pump 4951350 3419493 for Cummins NT855 Diesel Engine. Cummins NT855 Diesel Engine. The fuel injection pump provides precise control over the amount and timing of fuel injection, ensuring that fuel enters the combustion chamber at the optimal moment to maximize fuel efficiency. By delivering a more precise amount of fuel, the fuel injection pump contributes to smooth engine operation, increased power output and responsiveness. 1x Fuel Injection Pump Assembly (As Pics Shown). Professional installation is recommended. Please check the part number and illustrations carefully to ensure that it fits your model. Your satisfaction is our priority, and we are committed to providing you with the best possible shopping experience. Please leave us your full name, your telephone number and detailed address when ordering. We try our best to pack the products as good and safe as possible, so they always arrive in a good condition. We offer sophisticated products at a high technological level, with the highest possible quality and the most favorable price. With these parts you can replace your defective parts simply plug and play. 24 months without mileage limitation. Please compare carefully with Photos or OE number before purchasing the part. We try our best to pack the products as good and safe as possible, so they always arrive in a good condition. With these parts you can replace your defective parts simply plug and play. Please compare carefully with Photos or OE number before purchasing the part.