Engine Long Block Short Block. New Power Unit OEM DCEC Cummins Diesel Engine Complete QSZ 550HP High Power 13L. 550 HP New 6 Cylinder Engine. For Replace old Engine only, an old VIN or Engine Number are necessary. Please Contact before order. Before Start Engine you need to do. Change the oil filter with new one. Fully fill oil filter with lub oil before spin it on. 3 Open all valve covers and oil all rock arm. 4 Check oil dipstick to make sure oil level correct. 5 Disconnect fuel lines and electronic power. 6 Rotate engine by hand at least 5 rounds. 7 Keep the fuel shutdown rotate engine with electronic motor 30 seconds each time, 3 times at least. 8 Check oil pressure gauge when rotating engine. If no pressure, check oil pump and lubricate it with oil. 9 Keep on checking oil pressure when you start engine. 10 Keep engine idle at least 5 mins when starting engine. This product is available for international sales and is not located within the United States. Warning : Cummins parts can be quite complex, and even the same engine model may use different parts. For this reason, we strongly recommend that customers order parts based on the specific part number. If you are unsure of the part number, please provide your engine number or VIN, and we would be happy to assist you in verifying the correct part. The count starts from the day after you placed your order and excludes weekends and holidays. We are subject to labor law regulations that restrict weekend sales services. All the warrantee Are Limited in Parts Only, engine rotation is very Danger, to be safe when the engine running all the people must keep distance at least 10 feet away from engine rotation radius, any time the shut down valve must be active, keep your engine can be stop any time.