TRD Pro Tail Lights - Cracked?

Recently had to replace the tail lights on my 2018 so made the jump to TRD Pro lights. Supposedly OEM lights from Toyota.

Both lights have this perfectly straight "crack" on them from top to bottom. Is this normal? It feels smooth so I'm assuming maybe it's on the inside.

Appreciate the help!

https://imgur.com/a/6IF667E

 

That's normal, part of the mold I suppose. Same on my OEM tails

 

Thanks! Figured it would be a little less noticeable lol

 

That looks like a parting line for the injection mold, but it also seems like an odd place for one. Typically, a crack will wonder. It makes me think it may be other than an OEM.

 

On my TRD Pro

 

Thanks for the pic. Guess I'll put em on and see how it looks.

 

It is just injection mold lines. They are present on my 2017 OR as well. They are less prominent, but only because my lenses are red and not clear.