Check the listing for details. CA5T-18B849-AD Lincoln MKS Lear THX amplifier *Remanufactured* w/ core REFUND. Color: Silver, Condition: Seller refurbished. Listed at 339.99 USD. CA5T-18B849-AD Lincoln MKS Lear THX4 amplifier *Remanufactured* amp core refund. Condition is Seller refurbished. This unit has been fully refurbished to resolve known manufacturing defects and is guaranteed to work. Please confirm the part # on the bottom of your amplifier. There are multiple units for these vehicles and they are not all compatible. No dealer programming is required. This unit will be plug and play for your vehicle. Normal 0 false false false EN-US X-NONE X-NONE The listing comes with the opportunity of returning your defective core amplifier for a $75 refund. Core refund process: We provide a return shipping label in the box with the unit that you have purchased.You return your old/defective core in the same packaging using the enclosed return shipping label.We process a refund to your transaction method within 3 business days of receipt and you'll be notified via eBay that a refund has been processed.Most units qualify for the full refund amount, though major liquid and physical damage can lower the refund amount. Please reach out with any questions. We’re more than happy to assist with questions related to the issues that you are experiencing with your audio system.