To be certain, you should:
* Consult your owner's manual: This is the most reliable source of information for your specific truck's year and model. The manual will have diagrams and instructions.
* Search online: Search "[your F-150 year] cabin air filter location" on YouTube or a search engine like Google. Many videos demonstrate the process.
Don't assume its location based on general information – always check your owner's manual or a video specific to your truck's year and model.