K&N Filter Universal X Stream Clamp-On 3 inch Flange 6 inch Base 5 inch Top 5 9/16 inch Height

If you're looking to get more airflow into your 2005 Ford Focus, this K&N XStream Top Universal Air Filter is a solid option. It's designed to increase air intake performance, which can make a noticeable difference in how your engine breathes, especially if you've modified other parts of your intake system. The key feature here is the 'XStream' technology, which means there's an additional filter element built into the top of the air filter itself. This extra surface area not only boosts airflow but also extends the time between cleanings, giving you a longer service interval.

This filter uses a clamp-on design with a pliable rubber flange that's built to last. The rubber is strong and can absorb engine vibrations, ensuring a secure fit. Plus, it has a little give, allowing it to stretch up to 1/16th of an inch to accommodate slight variations in intake tube size. Because it's a K&N, you know it's washable and reusable, meaning you can clean it and put it back in service for years to come, saving you money on replacements.