Even the simplest car engine would have over 500 parts. There are many very complicated engines with thousands of parts.
carburetor.
carburetor
The radiator cools the engine.
engine?
crankshaft
There are many ways to obtain information. There are books available online, often at car forum websites, or car part websites, that offer free engine diagrams.
older engines have carburators
oops. what sort of tool and what part of engine.
The engine bay is the part of the car where the engine is.
the hood.
engine
the engine