2004 saleen n2o focus. this allows the peddle to be pressed further and really does give additional acceleration worked a treat on my ford focus 16 zetec. 2005 05 ford focus 20l dohc engine motor 91k miles oem (fits: ford. $2,800. ford focus st170 engine complete. 2000-2007 ford focus: used car review featured image large thumb4. ford focus c-max 2004 – 2007 18 – 1798cc 16v qqda petrol engine.