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How to replace engine air filters on a Porsche 911 (2009-2012)

Maintenance Interval: Every 4 years or 40k miles (60k kilometers)

Dealer Cost: ~$300

DIY Cost: ~$70

Difficulty: Very Easy 

Repair Time: 20 minutes


Maintaining clean engine air filters is important for your engine's performance and health. As the engine air filters get dirty, their ability to air to flow easily suffers. Additionally, an old filter could start to fall apart and send dirt and debris into your engine. For the 911, Porsche recommends you replace your engine air filters every 4 years or 40k miles (60k kilometers). This is a very easy DIY that even a beginner can do. It will also save you a lot of money versus going to a dealership. To perform this DIY, check out the helpful tutorial above from YouTuber, CarFanatic. Detailed steps can be found below.

These service instructions apply to:

  • 2009-2012 Porsche 911 Carrera, S, 4, 4S, GTS, 4 GTS

Parts and tools you'll need for the job:
↗️T20 & T25 Torx screwdrivers
↗️Magnetic pickup tool
Vehicle-specific parts & tools you'll need for the job:
2009-2012 Porsche 911 Carrera, S, 4, 4S, GTS, 4 GTS (2 filters required)


  1. Gather tools and parts.

  2. Open engine cover.

  3. Unclip sensor connector on passenger side of air intake cover.

  4. Remove air intake cover by unscrewing 8 T25 Torx screws; carefully use a magnetic pickup tool or pliers to remove the screws.

  5. Remove air intake filters, which are each held on by 1 T20 Torx screw.

  6. Install new air intake filters.

  7. Re-install the air intake cover; be careful not to drop the screws in the engine bay.

  8. Clip in the sensor connector back in.

  9. Clean up and return tools.

  10. You're all done!