Air Plenum Instake Chamber Resonator is a direct fit for the following:

2005-2007 Ford Focus
-Fits Vehicles With 2.0L 16V DOHV EFI Engines (With Or Without PZEV Evaporative Emissions)
-Fits Vehicles With 2.3L I-4 16V DOHC EFI Engines (With Or Without PZEV Evaporative Emissions)

Genuine Ford Part Number: 7S4Z-9E648-A