Engine Long Block Short Block. OEM DCEC Cummins Engine Complete 205 HP 6B B5.9 Cummins Inline P Pump Long Block. This is OEM Engine New Made By Cummins DCEC factory, Not Aftermarket. 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. Important information regarding the proper usage of our product. This product is exclusively for use in agricultural machinery applications and is not suitable for usage in highway vehicles. Furthermore, it does not comply with the environmental requirements for highway vehicles. It is intended solely for the purpose of replacing existing older engines and is not a complete Engine. It is provided to customers for the specific purpose of repairing older engines. We urge buyers to conduct a preliminary check in accordance with the environmental regulations of their respective states to ensure compliance with legal requirements. Should you have any doubts or concerns, we strongly advise against purchasing this product. Buyers are responsible for any issues arising from its usage. 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.