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Demco 5th Wheel Rail Adapter for Chevy/GMC OEM 5th Wheel Towing Prep Package - 6-1/2' Bed - 21K

Demco 5th Wheel Rail Adapter for Chevy/GMC OEM 5th Wheel Towing Prep Package - 6-1/2' Bed - 21K

Our Price: $649.00
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Use your standard, above-bed fifth-wheel trailer hitch with your Chevy or GMC factory, underbed 5th-wheel towing prep package. Adapter mounts in factory sockets and supplies mounting rails in your truck bed for attaching your hitch. 1-800-940-8924 to order Demco accessories and parts part number DM6194 or order online at Free expert support on all Demco products. Great prices and Fastest Shipping for Demco 5th Wheel Rail Adapter for Chevy/GMC OEM 5th Wheel Towing Prep Package - 6-1/2' Bed - 21K. Accessories and Parts reviews from real customers.
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Demco Accessories and Parts

  • Fifth Wheel Installation Kit
  • Adapters
  • Rail Adapter
  • Demco

Use your standard, above-bed fifth-wheel trailer hitch with your Chevy or GMC factory, underbed 5th-wheel towing prep package. Adapter mounts in factory sockets and supplies mounting rails in your truck bed for attaching your hitch.


  • Converts your factory-installed, underbed 5th-wheel mounting kit from Chevy or GMC to standard, above-bed 5th-wheel base rails
    • Lets you use your 5th-wheel trailer hitch that attaches to standard, above-bed rails
  • Mounts to OEM pucks (or sockets) in your truck bed
    • Unit drops into pucks and locks in place
    • No drilling or welding required
  • Rust-resistant black powder coated steel construction
  • Made in the USA


  • Application: Chevy or GMC trucks with OEM, underbed base rails and 6-1/2' beds
  • Maximum capacity: 21,000 lbs
  • 5-Year warranty

Note: This adapter will not work with a B and W Patriot sliding hitch.

This adapter is perfect if you want to use your standard fifth-wheel trailer hitch with your Chevy or GMC truck's factory-installed, underbed fifth-wheel mounting kit. Just mount the adapter in your underbed rails using the integrated pucks and lock it place. Now you have the standard, above-bed base rails needed to install your fifth-wheel hitch.

6194 Demco Chevy or GMC Truck OEM Adapter for Attaching Standard Fifth-Wheel Trailer Hitches

Item # DM6194

Installation Details DM6194 Installation instructions

This Product Fits The Following Vehicles

California residents: click here

Customer Satisfaction Score:

Customer Reviews

Demco 5th Wheel Rail Adapter for Chevy/GMC OEM 5th Wheel Towing Prep Package - 6-1/2' Bed - 21K - DM6194

Average Customer Rating:  4.9 out of 5 stars   (88 Customer Reviews)

Use your standard, above-bed fifth-wheel trailer hitch with your Chevy or GMC factory, underbed 5th-wheel towing prep package. Adapter mounts in factory sockets and supplies mounting rails in your truck bed for attaching your hitch.


I needed a little help moving the item. It weighs about 200lbs. Very easy installation. Took about 30 minutes. Put my 5th wheel hitch onto the product and pinned it down. Great item!!

2019 Chevrolet Silverado 2500

Gave my review elsewhere, but didn’t see a place to add pics. This is adapter was a perfect fit to my 2019 Chevy 2500HD 6-1/2’ bed truck, and allowed use of my Reese Pro Series 16K fixed hitch. It’ll work great towing my 10,000 lb. camper. The only thing to pay attention to is that the thumbscrew used to lock the lever in place after the adapter is installed, is ONLY a THUMB screw. I attempted to give it a final snug with a tool and it snapped right off.

Perfect S.



2018 GMC Sierra 2500

etrailer kept me informed as to the delivery status of my order and I was very please to receive the Demco adapter base for my 2018 GMC 2500HD a week early! The install was simple.

My only issue was the rear Demco product leveling studs that rest on the truck bed pucks were not the same thickness and that caused me some install delays. (See Photo.) etrailer, please let Demco know of this issue so they can improve.

Once I saw this I worked around the issue. Otherwise very well built product that saved me from having to buy a new 5th wheel hitch when I bought the new truck.


I needed an adapter plate if i was going to utilize my old Reese sliding fifth wheel hitch.
It arrived in very short time . I was skeptical it would be able to securely be able to do the job. 1200 miles later i was home again. It worked great. I currently have it for sale as i have purchased a newer truck and the hitch or plate are compatible.
Great product though.

2018 GMC Sierra 3500

The demco hitch adapter arrived earlier than expected. Packaging was crap but it fit perfect and was real easy. I did sand & repaint the entire assembly. I also put on the new decals you sent me. (Thank you). When I need additional stuff you will be the company I contact


Dropped right in and fit great. Very easy to install. Installed to hold my 16k Pullrite Superglide in my factory 5th wheel prepped 2018 GMC Sierra 2500.


Install was easy, product is as advertised and seems pretty beefy. Only Issue is the Wing Nut to lock it is a weak metal. There appears to be a bit of overspray or extra material making it difficult to get the screw in. My Wing nut sheared off when trying to get it locked down. Luckily I had a Steel Machine Screw with the same dimensions that I used in the second hole.


So far, So good, my adapter came two days after placing my order. Had it in in a few minutes, set my Huskey fifth wheel slider on it and was finished.
Thanks, for a great product.


Item arrived quicker than the back order stated surprisingly enough the thing was pretty heavy if I was a young kid would be easy. connection was simple and easy as well.

2019 Chevrolet Silverado

Fits perfect in my 2019 Silverado 3500hd. The bottom rear feet are not pins. They are flat that you adjust with a supplied Alan wrench. Pin the middle and adjust the feet to keep from rocking back and forth. Side to side. Fits my Reese 16k hitch nicely.


Great product well built fit perfectly made my slider hitch install a breeze


Was impossible to locate 5th wheel rail mount to fit fit my new 2019 GMC Denali built-in puck system until I called Donna P. at etrailer. The rail fits into all five holes pre-designed and built into my truck bed. Made a heavy-duty construction much heavier than the double rails normally used in truck beds it is certain to last a lifetime. The new Reese Hitch was just as impressive. Thank you Donna!



Best RV Mount imagineble


We just got it today, but it went in easy and can't wait to start pulling camper this summer! Shipping was fast! Thanks


It worked perfect. I took it out of the box,installed it in my truck per attached instructions and put the fifth wheel portion onto the rales and had it hooked to my camper in approximately 45 minutes.

2018 Chevrolet Silverado

The Demco rail adapter arrived at our house less than 48 hours after I placed the order. It fit perfectly in our 2018 Silverado 3500, and I was towing our fifth wheel the next day. Everything works as advertised. Thanks to Pat at e-trailer for answering my questions and helping me place our order.



Everything about the Demco adapter works as advertised. A great product. Since February of 2019 we have towed our fifth wheel about 10,000 miles without any problems. Thank you for a great product.

2018 GMC Sierra 3500

Perfect fit packaging was fine arrived on time absolutely phenomenal system. Jesse M was a fantastic customer service representative explained a lot of stuff to me once it arrived installed within 15 minutes.

2019 GMC Sierra 2500

Absolutely love this product



Working great

2019 Chevrolet Silverado 3500

Very easy to install and remove. Allows me to reuse the 5th wheel hitch that I already had.




2017 GMC Sierra

The product arrived as indicated and fit my 2017 GMC Sierra 2500 as stated. I wiil be putting my fifth wheel on this hitch plate and pulling my Columbus 320RS the week before Thanksgiving. I so glad I did not have to drill hples in the bed of my truck. This adapter fit the factory holes for the removable gooseneck set up.


The service I received was exceptional!!! They came in to help me with a small glitch after hours. I would highly recommend etrailer. My Demco 5th wheel rail adapter has really been a great product.


At first I wasn't sure how it would work out, but after installing, it worked perfectly. It dropped in and fit as advertised.

I had ordered the wrong part and etrailer worked with me to make sure I got the right one. Super customer service.

GMC Sierra

Arrived on time, quite heavy though, but after all it's rated for 21,000 lbs.. Fit my new GMC 2500 Sierra with 6 1/2' bed and underbed 5th-wheel towing prep package as promised. Very easy installation and fell right in the prepared opening in the truck bed. More important was that it fit perfectly the 15k PRO Series 5th wheel hitch we already owned. All in all, great product and installed within 1/2 hour.

2019 Chevrolet Silverado

We installed it in a new 2019 Silverado 3500 that had the 5th wheel preparation package. It only took about 10 minutes. Then, my 5th wheel hitch from the prior truck attached easily to this new rail system. No need to pay someone to install. Very pleased!


Easy to install Easy to remove I recommend to remove the wing nut and install a grade 5 bolt with a lock washer and a little grease on the bolt The wing nut bolt will break off and then you will have to get it out


No issues at all with the adapter plate. Worked exactly as described on the website. Fast and easy delivery. Stacey A. was very helpful when ordering. I would buy it again.



No longer own the hitch. Sold the truck and hitch. Was satisfied with the way the hitch performed while I did own it.

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