Can 5th Wheel Rails be Installed on Truck with Gooseneck Plate Already Installed?

Updated 03/19/2025 | Published 03/16/2025

Question:

I have a gooseneck plate already installed in my truck I use to pull horse trailer my question is can I mount my 5th wheel rails to it ? I have new rails and hardware and frame brackets

asked by: William S

Expert Reply:

Hey William, thanks for reaching out!

Gooseneck hitches and 5th wheel brackets use the same mounting locations, so you won't be able to install them together, but we have a wide variety of gooseneck to 5th wheel adapters that allow you to use your plate for 5th wheel towing.

For example, we have the Demco Recon # DM8550045 which attaches to the gooseneck hitch ball and provides a connection for the king pin, or we also have the Reese Goose Box # RP94716 that replaces a standard 1621 pin box and secures directly to the gooseneck hitch ball as well.

Which style would you rather use? I'd be happy to help you pinpoint the exact part you need!

expert reply by: Jon G

William

3/17/2025

I like the reese goosebox my 5th wheel is gross max wheight is 13500 so it the 16000 lb goos box the one I need

Jon G.

3/17/2025

@William The 16K could definitely work. Do you know what model pin box you have? These fit in place of specific models so we want to make sure it's the right one.

William

3/19/2025

@JonG our 5th wheel is a 2006 fleetwood terry quantum ax6 I am sure it is the original box

Jon G.

3/19/2025

@William Is there a serial number on a sticker anywhere you can tell me? We unfortunately don't have a listing of what pin box models came on every 5th wheel on the market. The manufacturer could tell you, but I can also reach out to Lippert and see what they say if I have the serial.