You Do Need power plug adapter while traveling from Central African Republic to Saudi Arabia.

Here is Why You Need An Adapter

The outlet and plug type used in Saudi Arabia is G and in Central African Republic are C and E. This is how they look like.

Central African Republic

In Central African Republic, outlets of type C and E are in use.

Type C

Type E

Saudi Arabia

In Saudi Arabia, outlets of type G are in use.

Type G