Is the AC in your 2007-2011 Lincoln MKZ 3.5L blowing warm air? This RYC remanufactured AC compressor (model FG649) could be your solution. It's not just used – it's been professionally remanufactured. That means it was completely taken apart, cleaned, inspected, and any worn or broken parts were replaced with new or rebuilt ones. It should work just like a brand new compressor! It's a belt-driven unit with a 6-groove serpentine pulley. Cross-references to OEM numbers like CS20038, 8H6Z19703A, and others. Comes with a 6-month manufacturer warranty from R & Y A/C Compressors, which is decent peace of mind. Swapping a bad compressor is a big job, but with a quality reman unit like this, you can get your cool air back without paying dealership prices. Perfect for DIY mechanics with the right tools or for professional shops doing customer repairs. Beat the heat this summer!