X5 Gooseneck-to-5th-Wheel Adapter Plate with Square Shank

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Quick Facts:

  • Converts B&W gooseneck hitches to 5th wheel base rails
  • For use with CURT and competitive 5th wheels up to 20,000 lbs.
  • Square shank for use with gooseneck hitches with square ball hole
  • Industry-standard base rails accept 5th wheel hitches and rollers
  • Protected by a highly durable carbide powder coat finish
  • Co-cured in a rust-resistant liquid Bonderite coating
  • Limited lifetime warranty (one-year finish, one-year parts)
  • Not compatible with shallow-hole gooseneck hitches
  • Shank hole is 2.25" from plate surface
  • CURT part number: 16310

CURT 5th wheel adapter plates are a fast, dependable way to convert your gooseneck trailer hitch into a set of 5th wheel rails to accept a 5th wheel hitch and switch back again. With gooseneck installation brackets and a gooseneck hitch already mounted, the adapter plate post simply mounts into the gooseneck trailer ball hole using a solid shank and is secured with the locking mechanism provided by the gooseneck hitch. One of the most attractive features about CURT 5th wheel adapter plates is that they are practically instantaneous: insert the shank, apply the locking mechanism and just like that you have a sturdy pair of 5th wheel rails. This CURT 5th wheel adapter plate features a square shank and is compatible with B & W Turnoverball gooseneck hitches with a square shank removable ball. It features a gross trailer weight capacity of 20,000 lbs., allowing it to adapt and accept a number of 5th wheel hitches. This 5th wheel adapter plate offers a simple pin-and-clip conversion for gooseneck hitches and has multiple mounting points to accept either 5th wheel legs or a 5th wheel roller.


  • MAXIMUM VERSATILITY. The X5 gooseneck to 5th wheel adapter allows you to maximize the functionality of your pickup truck, enabling you to pull both gooseneck and 5th wheel trailers. It easily drops into your existing gooseneck hitch and provides a set of industry-standard 5th wheel base rails.
  • STANDARD FIT. This particular X5 5th wheel adapter is designed to fit B&W Turnoverball gooseneck hitches (Not compatible with shallow-hole gooseneck hitches). The industry-standard, universal 5th wheel hitch rails are able to mount any CURT 5th wheel legs or roller (excluding puck system products).
  • DEPENDABLE TOWING. This gooseneck converter is tested and rated to tow up to 20,000 lbs. gross trailer weight, making it ideal for many CURT and competitor fifth wheel hitches (limited to lowest-rated towing component).
  • HIGH-STRENGTH. For dependable strength, this 5th wheel adapter plate is constructed from steel, giving it maximum towing power to complement your truck and 5th wheel RV camper.
  • DUAL-COAT. This 5th wheel to goose adapter attachment is protected in a two-part finish of rust-resistant Bonderite and a highly durable carbide black powder coat for superior rust, chip and UV resistance.

More Information
SKU 2020102732
Brand Curt™
Gross Trailer Weight (GTW) 20,000 lbs.
Quantity In Package 1
Country of Origin United States
Sales Unit of Measure EA
Manufacturer Reference Number 16310
UPC 612314163106

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