Home Brew Overfill Kit

I was fascinated to see this little item being sold for over $100AUD BFM Full Blast - Overfill Kit
I was curious what it did.  So after researching all i could find is that it allows you to put extra gearbox oil in and you don't need to un tighten the top filler bolt...Which most would know is a slut!
So i did some research and found out that the thread was a simple M18x1.5mm
Original plan was to buy a bolt matchin this and tap it out and thread an internal thread to a tapered valve i had.

But on the way back to work i saw enzed...And to my amaze ment they sell a bolt matching that thread that is already tapped out!!!! OMFG
So then i purchased a tapered 90 degree elbow to mount into the internet thread of the bolt :)
Enzed is a shop that sells hose and hose fittings.
I also purchased some teflon tape and some braided hose.



I need to buy some conduit to protect the hose.
I also bought a brass plug to plug the other end of the hose

According to a Jap post the guy puts 2lt of fluid.  I had to measure this as I couldn't get it to overfill past the 90 degree bend.  I put about 2.5lt haha and couldn't see it.
So best to measure :)

Updated Parts List:

PS: if you plan on changing oil regularly, would make a lot of sense to replace those hex bolts with normal M18x1.5 bolts. Which I am contemplating on doing, credit to Ayu452 for the sizing of the bolt. /home-brew-overfill-kit.html
Sales people got confused, apparently in providing the items i used. General names include:
1)
M18x1/4 BSP (which is a generic sensor adapter)
e.g. Brass adapter bush, suits threaded port in the turbo outlet pipe for Australian DTS, MTQ & Safari systems with threaded Metric M18 x 1.5.
2)
Barbed Brass Fitting - No P6 Male Elbow - 1/4 x 1/4 (Hose x BSPT)
Code: 06006-0404
 - used to create the right angle in the sensor adapter
3)
Barbed Brass Fitting - No P10 Female Tailpiece  - 1/4 x 1/4 (Hose x BSPT)
Code: 06010-0404
 - used to block the end of the open hose that runs into the engine bay
4)
1/4 BSP Taper plug
 - used to close the end of (3)

I use 6mm hose with hose clamps. The hose has an outer cover, with some electrical conduit. I didn't have any issues with heat, it was more so protection from rubbing or getting pinched.


Some info from Minkara see here:
In principle, by attaching the inlet, you can enter up to 3.4L (1.75L oil standard). If you go up the oil capacity, so I think that many of decline and deterioration can be suppressed as it increases the amount of oil temperature. Moreover, the mechanism is able to easily replace the oil, if you connect the accessory to a one-touch Koneta male connector on the bottom of the cap, oil Server (pump) can be injected from the comfort of your oil.