An engine overhaul service is a comprehensive engine repair that involves disassembling, cleaning, inspecting, repairing or replacing all worn or damaged engine components and then reassembling the engine to factory specifications. This type of service is typically done to restore an engine that has experienced significant wear or damage, and may involve replacing major components such as pistons, bearings, valves, and cylinders.

An engine overhaul service is a more extensive repair than a typical engine repair, which may only address specific problems or worn components. Overhauling an engine typically involves removing the engine from the vehicle and completely disassembling it. All components are then cleaned and inspected, and any worn or damaged parts are replaced.

An engine overhaul service is typically performed by a professional mechanic or auto service center with experience in engine repair and rebuilding. It is important to choose a reputable service provider with experience in this type of work to ensure that the job is done correctly and to avoid any future problems or issues with the engine.