Disconnect your negative battery cable, if your Ford Focus has power side mirrors. If it has manual side mirrors, disconnecting the battery is unnecessary.
Pry off the wing mirror's inside sail panel (shaped like a triangle). Insert a trim panel tool between the door skin and the plastic panel to pry it off.
Carefully pull the sail panel away, minding the wiring if the mirror is power-operated. Unplug the electrical harness and set the panel aside.
Open the door and hold the outside part of the wing mirror steady. Remove the mounting bolt with a socket wrench, and then remove the mirror screw with a Phillips screwdriver (the mirror bolt and screw is visible with the panel removed).
Pull the wing mirror assembly from its mount (from the outside). Insert the replacement mirror assembly in place; tighten the bolt and the screw.
Attach the wiring connection to the replacement mirror. Position the sail panel in place and push it against the door to snap it back on.
See link below
you take te old one out
You will need to replace the whole mirror. Just buy a replacement at auto zone and installe.
To replace the driver side mirror on a 2003 Ford Focus you will need a socket and a Philips head screwdriver. Loosen the driver side door panel so that you can reach inside to unplug the wiring harness, and then remove the bolt and screw to remove the mirror. Put the new mirror in place and reattach everything you just removed.
Go to NAPA and buy a Repair Manual.
Use a vanity mirror and a torch so you see what you are doing.
The 2007 Ford Focus has 16 valves.
You can not replace it unless it's an old ford focus.
The mirror glass for a Ford Focus is available online at places like CariD and Parts Geek. You can also buy the entire mirror online on eBay for about $30.
The curb weight of the 2007 Ford Focus is 2605 lbs..
The 2007 Ford Focus has a 5-speed manual.
The 2007 Ford Focus has an inline 4 engine.