These white foam gaskets fit between the sealed lens assembly and the chrome side marker light housing. They are sold as a pair. Replaces Ford part number D0ZZ-15209.
*NOTE* To separate the sealed plastic lens assembly from the chrome bezels you will have to gently break away the edges of the factory "melted over" plastic stud. A drop or two of your favorite adhesive will reattach them but this is not crucial as the two threaded studs keep everything tied together once they are mounted back to the body.