At this time there is not a Class III, or larger 2 inch receiver hitch available for your 2006 Lincoln Zephyr. I have included a link to the available hitches for you. The most popular option is the Curt hitch, # C11329. To look at the installation instructions, click the provided link.
I have listed some items you may need to complete your towing setup.
Drawbar # 3592
Hitch Ball # 19256 or # 19258
Hitch Lock # e98879
Pin and Clip # PC2
Wiring # 119176KIT view full answer...