I reached out to the company that builds the Ram Gooseneck Coupler item # GCSQTW-30008 , Pacific Rim International Factory, and was not able to get an exploded parts diagram. I have listed all of the replacement parts below that are available.
Gooseneck Coupler Handle item # GCPN-HD
Replacement Set Screw for etrailer Gooseneck Couplers item # SS-34103-BT
Set Screw Nut item # SS-34103-NT
Replacement Load Bearing Pin for Ram Gooseneck Couplers item # GCPN-PIN
Gooseneck Coupler Head... view full answer...
The cable to operate the release on the Bulldog Gooseneck Coupler part # BD0289340317 is not included because it is not needed. It is only for convenience as you can still operate the coupler lock with just the handle. If you do want to add a cable then you would need to use the one off your old coupler or modify something to work for you as we do not carry these. view full answer...
The latch mechanism of the Gen-Y Pegasus Shock Absorbing Gooseneck Coupler # 325-GH-7007 that you referenced is the pin style and not the older auto-latch system that it used to have. view full answer...
The Bulldog Gooseneck Coupler # BD0289600300 comes with both the inner and outer tube. The outer tube is not sold separately since the inner tube is what normally gets replaced if you are not replacing the whole unit. view full answer...
I went to our warehouse and checked the Ranch Hitch Universal 5th-Wheel-to-Gooseneck Coupler Adapter, part # AM3100. The couplers still have the 2 square head bolts used for adjusting the height of the coupler. They arrive at our warehouse with the hardware in the box. We cannot endorse using any other hardware than what's supplied by the manufacturer. view full answer...
The Reese Goose Box 5th-Wheel-to-Gooseneck Air Ride Coupler Adapter part # RP94716-61301 does not come with safety chains but we do offer some that will work great with this, the Tow Ready Safety Chain Kit with Clevis Hooks part # 49150. view full answer...