On the engine, in the outlet, at the base of the top hose.
The 2003 Ford Focus has double overhead cam (DOHC).
Yes , according to the Gates website ( they make timing belts etc. ) both the 2.0 liter SOHC and DOHC engines in a 2003 Ford Focus are interference engines
2.0l DOHC zetec 4 cylinder
The 2.3 liter engine in a 2003 Ford Focus has a timing CHAIN , the 2.0 liter ( SOHC and DOHC ) engines have a timing BELT ( according to the Gates website , they make timing belts etcetera )
It is located at the point where the upper radiator hose connects to the engine.
In the top radiator hose fitting opposite the radiator, on the engine.
The 2011 Ford Focus has double overhead cam (DOHC).
The 2001 Ford Focus has double overhead cam (DOHC).
The 2008 Ford Focus has double overhead cam (DOHC).
The 2010 Ford Focus has double overhead cam (DOHC).
The 2014 Ford Focus has double overhead cam (DOHC).
The 2013 Ford Focus has double overhead cam (DOHC).