Where is the intake manifold located?

[TravisLynn]

The intake manifold is located between the carburetor or throttle body and the intake ports of the cylinder head. For carbureted or throttle body fuel-injected engines, its function is to distribute the air-fuel mixture from the carburetor or throttle body to the intake ports of each cylinder. For port fuel-injected engines or diesel engines, the intake manifold solely distributes clean air to the intake ports of each cylinder. The intake manifold must distribute the air-fuel mixture or clean air as evenly as possible to each cylinder. To achieve this, the length of the gas flow passages inside the intake manifold should be as equal as possible. To reduce gas flow resistance and improve intake efficiency, the inner walls of the intake manifold should be smooth.