Maxxforce 13 oil filler neck leaks

I was wondering if any of you have replaced one. I've replaced rubber tube connecting upper filler neck with lower filler neck that is fixed into engine block.
I cleaned all of the oil residue and ran it for few thousand miles and it's apparent that lower filler neck is leaky, don't know if it is cracked or there is an o-ring or thread sealer that failed. I ordered a new one anyway as it was only $21. Is there any special removal tool required for this replacement job? Any advise is much appreciated. See picture for reference.
Thanks, Jacob

 

That's what I'm afraid of, cracking it since it is plastic I thought there's a removal tool of some sort.
Thanks for heads up Heavyd, I can take it from here

 

That's what I actually thought it's needed, giant hex but I was going to wait until I get the part in my hands to see if I could match anything to it.
It be funny if it would fell inside the crankcase, lol

 

That and not only, was very nice of them. Makes me wonder often times what engineering school they graduated from....

 

This sounds like it happens when you hit the boost. Which side (left/right) is affected more? I think the idea of mounting "gopro" is totally worth of hassle. The only ideas that come to my mind are:
Turbo feed line (but it's all hidden down)
Damaged/cracked Crankcase oil separator (sits on the top of the engine)
Cooling fan shaft seal (but that is facing radiator)
Failed high pressure turbo in connection with damaged intercooler (hole in it)
Other than that, it is hard to to pin point. Wish you luck on your fix and please comeback here again to share your findings.