Mine is an OE seal as well.
I put it in just like the original, ie not upside down and facing the right way. However I had to cut out about 3/4 of an in and it still doesn't fit 100%. I am not to happy with the way it came out but I am in no hurry to cough up another $68 at the dealer for a second one. Maybe later this year after it bothers me more.
I played with the seal for 2+ hours but just couldn't get it to fit perfectly.
