Intake Filter Change
Another job made complicated by packaging, changing the intake filters on an Aston Martin is a job performed from underneath the car. This maintenance job is recommended every 2-3 years (depending on climate). You'll need two intake filters, one for each of two intake airboxes. This job is much easier if you remove the front wheels, but can be done with them still on the car. Removing them gives you more space to move the fender liners out of the way.
DISCLAIMER: As always, follow all safety protocols. Don't undertake this task if you aren't comfortable with it and fully understand it. You are ultimately responsible for anything you do. Neither Redpants, LLC or myself is responsible or liable for anything that may occur.
New air filters
T27 Torx bit
T40 Torx bit
Extension for the 8mm socket
Ratchet for the socket and Torx bits
About an hour
Step 1 (Prep)
Break the lug nuts loose on the front of the car. Get the car off the ground, either with a lift or using a jack and jack stands. If you're using jack stands, you only need the front off the ground. Ensure the car (or at least the front of the car) is safe and secure before proceeding. Remove the front wheels.
Use the T27 and T40 Torx bits to remove all the fasteners on the front undertray. The bolts are the only thing holding up the undertray - once they're removed, the undertray will fall. So be ready for it!
Use the T27 Torx bit and Philips-head screwdriver to remove the fasteners on the front half of the fender liners. Follow the fender liners to find them all. Once removed, pull the fender liner back out of the way.
Use the 8mm socket, extension, and ratchet to remove the bolts holding the airbox cover onto the airbox. Here are the locations of all seven bolts:
Some are hidden out of sight so you'll need to shine a light around the edge of the cover (looking upwards from the bottom). Once they're all removed, you can pull the cover off the airbox. You'll see the filter inside.
The air filter is held on by fitment pressure - there isn't a clamp holding it in place. Pull the air filter down out of the airbox. It'll probably help to give it a little wiggle to break the rubber-on-plastic seal while pulling on it.
Install a new intake filter. Make sure it's seated properly and doesn't fall out. If it does fall it, it means the filter is too loose - there's a gap between the filter flange and the intake pipe. That gap will allow dirty, unfiltered air to get past the filter media, potentially damaging the mass airflow (MAF) sensor, engine, or other components.
Reinstall the airbox cover and its bolts, and the fender liner and its fasteners.
Repeat Steps 2-7 on the other airbox. Once finished, reinstall the undertray. Remount the wheels and hand-tighten the lug nuts. Lower the car, then finish tightening the lug nuts.
That's it, all done!