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How to Tell the Difference Between the Curt Double Lock & EZr Gooseneck Hitch  

Question:

Attached are a couple if pictures of the hitch and ball in my truck.

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Expert Reply:

If you could send me a picture of the gooseneck hitch you have installed in your 2017 GMC Sierra 2500 then I would be able to make a more educated guess but based on your description you have the Curt Double Lock Gooseneck Hitch part # C607-604 and the correct adapter would indeed be part # C16210. However, if the gooseneck hitch was installed at the dealer then you would have had the Curt EZr Gooseneck Hitch part # C611-624 and the correct adapter would be part # C16220. I have attached a photo of both the Double Lock and EZr for you as well.

If you are also looking for a 5th wheel hitch to use with this adapter, I recommend using the Curt A20 5th Wheel Trailer Hitch part # C16541. This hitch has a 20,000 lb towing capacity and sliding feature to create clearance for sharp turns.

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Conner L
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Mark profile picture

Mark

3/7/2018

Attached are a couple if pictures of the hitch and ball in my truck.

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Conner L.

3/7/2018

Thanks for the photos! You have the Curt Double Lock Gooseneck Hitch part # C607-604 therefore, the Curt X5 5th Wheel Base Rails Adapter part # C16210 would be the correct adapter for you.
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Instructions for C16210Instructions for C16220Instructions for C607-604
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