2009-2012 Lincoln MKS MKT MKZ THX Premium Audio Stereo Amplifier AA5T-18B849-AF

2009-2012 Lincoln MKS MKT MKZ THX Premium Audio Stereo Amplifier AA5T-18B849-AF

Item Specifics

• Brand: Lincoln / Ford (Genuine OEM)

• Manufacturer Part Number: AA5T-18B849-AF

• Other Part Numbers: AA5T-18B849-AE, AA5T-18B849-AG, AA5T18B849AF

• System Type: THX II / THX4 Certified Audio

• Placement on Vehicle: Trunk / Rear Quarter Panel

• Fitment Type: Direct Replacement

Item Description

For sale is a genuine OEM Lincoln THX Certified Audio Amplifier. This unit is the primary power source for the premium multi-speaker THX system. If your speakers are crackling, cutting out, or you have no sound at all, this module is the likely culprit.

Condition Details:

• Status: Used, fully bench-tested. No dead channels.

• Hardware: Connectors are clean and free of corrosion. The metal casing acts as a heat sink and may show minor surface scuffs, which do not affect performance.

• Compatibility: This was removed from a 2010 Lincoln MKS, but fits several models with the matching THX setup.

Fitment Guide:

This part is known to fit the following vehicles (equipped with the THX package):

• 2009–2012 Lincoln MKS

• 2010–2012 Lincoln MKT

• 2010–2012 Lincoln MKZ

Technical Note: You must match the base part number (18B849) and the prefix (AA5T). Ford/Lincoln used several different amps that look identical but have different software; matching the full number ensures your steering wheel controls and subwoofers work correctly.