This is a link and pin coupler that is compatible with LGB bogies.
www.thingiverse.com
I have compared them to LGB ones and they look similar.
The pin print leaves a bit to be desired but can easily be replaced with a split pin trimmed to size.
![www.thingiverse.com](/proxy.php?image=https%3A%2F%2Fcdn.thingiverse.com%2Frenders%2F3a%2F17%2F1e%2Fa1%2F04%2Fimage_preview_featured.jpeg&hash=2767408cdbfb82967222a8cc28c1b491&return_error=1)
Link and Pin G-Scale Coupler by FatFarlake
This thing was made with Tinkercad. It should fit on any G-Scale model that have LGB compatible couplers. I had the best result with ABS.
![www.thingiverse.com](/proxy.php?image=https%3A%2F%2Fcdn.thingiverse.com%2Fsite%2Fimg%2Ffavicons%2Ffavicon-192x192.png&hash=d1d9d3ef28b503064018eaf8eda42275&return_error=1)
The pin print leaves a bit to be desired but can easily be replaced with a split pin trimmed to size.