How to replace spark plugs on a Porsche 911 (2005-2012)
Maintenance Interval: Every 4 years or 40k miles (60k kilometers)
Dealer Cost: ~$1000
Independent Mechanic Cost: ~$600
DIY Cost: ~$100
Repair Time: 5 hours
Recommendation: Go to independent Porsche Mechanic
While replacing spark plugs on normal cars is a pretty simple task, it is more difficult on the Porsche 911 due to the engine's horizontally opposed design and placement. Unless you have some experience working on cars, the right tools, and patience, we recommend going to an independent Porsche mechanic for this service.
For an overview of the procedure, check out the video above from YouTube channel, EMD Porsche Specialist Caringbah Sydney. If you would like to do-it-yourself, you can find the parts, tools, and instructions below.
These service instructions apply to:
2005-2012 Porsche 911 (all Carrera trims)
Parts and tools you'll need for the job:
Vehicle-specific instructions & parts
Rather than reinvent the wheel, we recommend you check out these helpful DIY write-ups from fellow 997 owners:
If you need help with removing the mufflers, check out this helpful video from YouTube, CarFanatic. Please note that if your muffler fasteners are very corroded, it's best to tighten them to break the bolts rather than trying to loosen them. Attempting to loosen them usually results in stripping the bolt, which makes removal even more difficult. Be sure to replace any badly corroded fasteners.