Towing Equipment› Hitches

Curt

FIFTH WHEEL ADAPTER

$762.63

SKU: C00D 16310

Out of Stock
In Stock
Ships by Sep 13
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Overview

The CURT X5 Gooseneck-to-5th-Wheel Adapter Plate with Square Shank (MPN 16310) converts B&W gooseneck hitches into industry-standard 5th wheel base rails, allowing use of 5th wheel hitches and rollers up to 20,000 lbs GTW. It features a square shank for gooseneck hitches with a square ball hole. Installation is tool-free: it drops into the gooseneck trailer ball hole and secures with the hitch's locking mechanism. It's protected by a durable carbide powder coat finish and a rust-resistant liquid A-coat.
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FIFTH WHEEL ADAPTER

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

Fitment Guaranteed

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandCurt
Part NumberC00D 16310

Videos

CURT B2B University: X5 Gooseneck-to-5th Wheel Adapter Plate

CURT B2B University: X5 Gooseneck-to-5th Wheel Adapter Plate
etrailer | Curt X5 5th Wheel Base Rails Adapter Review

etrailer | Curt X5 5th Wheel Base Rails Adapter Review

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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