Fit For the Following Models. Cummins 4B bronze engine cooling pump Used on various 4 cylinder Cummins diesel engines 1 1/4 in. Inlet and outlet ports Includes installed neoprene impeller Mechanical seal Replacement impeller P/N 10615K Replaces Cummins 3912019, 3907458, M70 M71 Uses Mounting Gasket CUM-3008400. 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. 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.