2008 Seneca black water hose routing

[Dizzyj]

Got a question on my Seneca. From the waste gate, I have a standard sewer hose that is attached, goes through a house toilet flange in the floor then comes does a 90 degree turn into a large (6”?) pipe that is under the rv.

To hook up to a dump you remove the cap from the pipe, pull out the hose and connect it to the dump.

My question is. Is this factory? Reason I ask is that I had to replace my sewer hose due to a small cut and I realized that any factory replacement hose with the male and female ends already attached do not fit into the 6” pipe nor the toilet flange.

I have to essentially use a sewer hose and hose clamp on one of the fittings.

I’m thinking about removing this pipe and toilet flange completely, and just repurpose the pass through in the floor where the toilet flange went to route a black water hose when I get to the campsite.

[Grumpy]

Yes it is factory.