What Are The Parts in An Engine Overhaul Kit?

Engine overhaul kit accessories:
Mechanical part: Generally, it mainly includes a set of intake and exhaust valves, a set of piston rings, a set of 4 cylinder liners, two thrust plates, and 4 pistons;
Cooling system part: Generally, it mainly includes water pumps, engine upper and lower water pipes, large circulation iron water pipes, small circulation rubber pipes, and throttle water pipes;
Fuel part: Generally, it mainly includes the upper and lower oil rings of the fuel injector and gasoline filter;
Ignition part: high voltage line, fire piston;
The near-air part: generally mainly includes the air filter;
Other accessories: Generally, it mainly includes antifreeze, engine oil, oil filter, detergent, engine metal cleaner or all-purpose water.