Depends on what model year and engine you have, but I believe the OEM manufacturer on the COPs for Motorcraft is either Bosch or Denso. For the 2005 I'm pretty sure it's Denso. If you buy a Denso part, you will likely get a part that has the Ford logo and the Ford part number scraped off. Denso is about 34-35 bucks a piece, not sure how much you have to pay for the Motorcraft ones.