* Ford's Official Parts Website: Ford's website (or a dealer's website) will likely have the most accurate diagrams. You'll probably need your VIN number for precise part identification. However, navigating these sites can sometimes be tricky.
* Online Auto Parts Retailers: Major online retailers like AutoZone, Advance Auto Parts, Napa Auto Parts, and others typically have online catalogs with searchable parts diagrams. Search for "2002 Ford Focus cooling system diagram" on their sites.
* Repair Manuals: A repair manual (Haynes or Chilton) specifically for a 2002 Ford Focus will include detailed diagrams of the cooling system. These are available in physical copies or digital formats.
* Third-Party Parts Websites: Many websites specialize in selling auto parts and will have diagrams, but always double-check their accuracy and reputation before purchasing.
Important Note: When using online diagrams, be sure to select the correct engine size for your 2002 Ford Focus (e.g., 2.0L, Zetec). The cooling system components can vary slightly depending on the engine.
