Tools

A few tools you will need for this are a 8mm, 10mm , 12,mm, 14mm and an O2 socket(s). The wrenches you will need are a 10mm, 14mm and a 22mm. A jack and jack stands will be helpful if you have a lowered car. On the lifted Forester I can slide underneath it and change it without raising it up.

Any time I am working on exhaust parts I idle/drive the car for a few minutes to help heat up the nuts and bolts. This thermal expansion helps you remove them easier. You will now lift the vehicle up in the air. Placing the jack stands in a safe stable spots and not around the middle of the car where you will be to remove the lower fasteners.