Beginner5 min1 tool

Replace Your Air Filter

Replacing your engine air filter is one of the easiest DIY jobs on any car — no tools required on most vehicles. A clean filter improves fuel economy and protects your engine. Takes 5 minutes.

Step-by-step instructions

  1. 1

    Find the air filter housing

    Open the hood and look for a large black plastic box — usually rectangular or round — connected to a large hose. This is the air intake housing. It's usually near the front or side of the engine.

    If you're not sure what you're looking at, search your car's make and model plus 'air filter location' on YouTube.

  2. 2

    Open the housing

    Most air filter housings are held closed by metal clips, wing nuts, or a few screws. Unclip or unscrew them and lift the lid.

    Take a photo before you open it so you remember how it goes back together.

  3. 3

    Remove the old filter

    Lift out the old filter. Hold it up to the light — if you can't see light through it, it's definitely time for a new one. Even if it looks okay, replace it if it's been more than 15,000–30,000 miles.

    A dirty filter looks gray or brown and may have visible debris. A clean filter is white or light gray.

  4. 4

    Install the new filter

    Drop the new filter in, making sure it sits flat and the edges are fully seated. Close the housing and re-clip or re-screw it.

    The filter usually only fits one way — if it doesn't sit flat, rotate it 180 degrees.

  5. 5

    You're done

    That's it. Close the hood. Most mechanics charge $30–$50 for this job. You just did it for the cost of the filter ($15–$25) in 5 minutes.

    Write the date and mileage on the filter box and keep it in your glove box as a record.

You did it.

This is genuinely one of the easiest car tasks there is. If you can open a lunchbox, you can replace an air filter.