SONY Factory Amplifier ML318B849AC

What is ML318B849AC

• ML318B849AC is an OEM (original equipment manufacturer) audio amplifier / sound system module used in some cars of the Ford / Mercury / related-brand families.

• It is often paired with vehicles equipped with a factory stereo or premium sound option (sometimes “SONY Audio” systems in Ford/Mercury cars).

• In listings, the part number is sometimes written exactly as “ML318B849AC,” and other times appears alongside or ephemerally substituted with similar part numbers (for example “AL3T-18B849-AB”) — but referring to the same amplifier module.

What vehicles / systems it applies to

According to sellers and fitment listings:

• It appears in cars such as Ford Fusion (around model years 2010–2012) and Mercury Milan with factory-installed Sony/stock audio amplifier systems.

• It also seems common in other Ford/Mercury models of the same era — particularly where the factory radio system uses a separate amplifier module rather than a simple head unit.

What to know / condition / typical status

• Most available ML318B849AC units for sale are used or salvaged (not brand-new).

• When buying a used unit, make sure the clips, plugs, and wiring harness match your vehicle — mismatch may result in incompatibility even if part numbers match.

• It is not a standalone head-unit (i.e. not a CD/AUX radio); rather, it is an amplifier that works with the vehicle’s stereo system (the head unit + speakers).

If you like — I can try to find a wiring-harness diagram for ML318B849AC (showing pinout, speaker outputs, power lines) — that can help you verify compatibility more precisely.

• Type: OEM audio amplifier (sound system amp).

• Use: Provides amplified audio output for vehicles equipped with a factory stereo (often “Sony Audio” systems).

• Compatible Vehicles (common): Ford Fusion, Ford Taurus, Ford Flex, Mercury Milan — primarily model years ~2010–2012.

• Condition (most listings): Used / salvaged units — check plugs and wiring harness before installing.

For more information call us 407-933-1065   or email at   sales@oemautosound.com