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Replacement Side Plates for Demco Autoslide 5th Wheel Trailer Hitches - Underbed Mount

Replacement Side Plates for Demco Autoslide 5th Wheel Trailer Hitches - Underbed Mount

Item # DM6004
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Replace the side plate assemblies that came with your Demco Autoslide underbed 5th-wheel trailer hitch (DM8550041, DM8550022 or DM855037). Bolts onto the hitch base so that you can attach your hitch to the underbed mounts in your truck. 1-800-940-8924 to order Demco accessories and parts part number DM6004 or order online at etrailer.com. Free expert support on all Demco products. Great prices and Fastest Shipping for Replacement Side Plates for Demco Autoslide 5th Wheel Trailer Hitches - Underbed Mount. Accessories and Parts reviews from real customers.
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  • Reviews (22)
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  • Videos (1)
  • Photos

Demco Accessories and Parts - DM6004

  • Fifth Wheel Hitch
  • Plates
  • Side Plates
  • Demco
  • Autoslide

Replace the side plate assemblies that came with your Demco Autoslide underbed 5th-wheel trailer hitch (DM8550041, DM8550022 or DM855037). Bolts onto the hitch base so that you can attach your hitch to the underbed mounts in your truck.


Features:

  • Replaces the side plates that came standard with your Demco Autoslide underbed 5th-wheel trailer hitch
    • Fits 13,000-lb (DM8550041),18,000-lb (DM8550022) and 21,000-lb (DM8550037) models
    • Lets you install your hitch in your custom underbed rail system
  • Simple, bolt-on installation to your hitch base
    • Multiple rows of bolt holes let you adjust hitch height
  • Rust-resistant black powder coated steel construction
  • Mounting hardware, handles, and safety pins included
  • Made in the USA


6004 Demco Under Bed Mount Adapter Plates for Hijacker Auto Slide 5th Wheel Trailer Hitch





Video of Replacement Side Plates for Demco Autoslide 5th Wheel Trailer Hitches - Underbed Mount

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Demco Fifth Wheel DM6004 Review

Today we're going to take a look at the replacement side plates for the Demco Hijacker Autoslide fifth wheel trailer hitches, and this is for the underbed mount. Now this will replace the side plates that came standard with your Demco Hijacker Autoslide underbed fifth wheel trailer hitch. They are designed to bolt onto your hitch base so that you can attach your hitch to the custom underbed rails. This is designed to fit the 13,000 pound Hijacker, Part Number DM8550041. It also fits the 18,000 pound Hijacker, DM8550022, and the 21,000 pound Hijacker, DM8550037 models. This is a simple bolt-on installation to your hitch base. There are multiple rows of bolt holes on these side plates and on your hitch base, so depending how you line them out, it will let you adjust the hitch height.

The hitch height settings will go from either 15-1/2 inches to 16-3/4 and 18-1/4, so you have your choice of those three settings to get your trailer and tow vehicle as level as possible. These do have a rust-resistant black powder coat finish. They are an all-steel construction. It does include the instructions. It will include the mounting hardware, and it also includes two 1/4-inch spacers and two 3/8-inch spacers, and the spacers are used for adjusting your hitch mount with the bed pockets of your truck, and this part is made in the U.S.A. The way that these would open up is you just pull the clip, pull the pin out, and you can see each one of these will rotate out, and when you rotate those out, it will let you drop it into your underbed mount, and then once there, you just turn this back in to lock it, and then put your clip right through there just like that. This part is made in the U.S.A. That should do it for the review of the replacement side plates for Demco Hijacker Autoslide fifth wheel trailer hitches with the underbed mount..

Customer Satisfaction Score:


Customer Reviews

Replacement Side Plates for Demco Autoslide 5th Wheel Trailer Hitches - Underbed Mount - DM6004

Average Customer Rating:  4.8 out of 5 stars   (22 Customer Reviews)

Replace the side plate assemblies that came with your Demco Autoslide underbed 5th-wheel trailer hitch (DM8550041, DM8550022 or DM855037). Bolts onto the hitch base so that you can attach your hitch to the underbed mounts in your truck.

by:

I see you only want to hear about the good parts of my perches. Sorry, you get it all or none. I want to start by saying your customer service was exceptional!! Well I should say the first guy I talked to was not good and had no idea of what has going on but the next 3 were great! I ordered the unit with the recommended Side Rail. They wouldn't work and had to wait for the right ones. That said. The unit is very well designed and constructed! The installation was a bit tricky. I was installing the unit at its lowest setting. One issue was the installation of the steel spacers (1463-76 &14959-76) to get the proper fit I had to remove the small tabs that were welded to the side of the autoslide unit. Second issue was installing the (outrigger bar 6018) With the bar in place the UMS pins would not turn to the lock position, the bar was holding the unit too high up. I used one of unused spacers (14959-76) in its place, it worked perfect. We took the 5th wheel out last week (I go to very remote locations in the mountains of Colorado) the unit worked great!



by:

Package arrived as per date promised. Other than a few scuffs on the outer box, everything looks good. The two items were separately packaged, giving the shipment an extra degree of protection.
I will be installing my new under body 5th wheel hitch this weekend, and I expect it to go “without a hitch”

Eric

2/2/2023

The adapter plates fit up to my existing Demco hitch “without a hitch”



by:

This was the best solution for my Dodge RAM 2500 towing my Alliance 340RL 38' 5th Wheel. My son helped me install the rails under the bed and now it is very easy to remove the hitch when I am not using it. It is very strong and I highly recommend this for anyone with a short bed truck.



by:

The Demco product works well and deserves five stars. etrailer originally sent me clearly used scratched and greased parts at the new parts price. After contacting etrailer they had me box up and ship back the used items and sent me the new items that worked fine. When I pay full price, I expect new items. I will gladly pay more elsewhere to avoid using etrailer again.



by:

One of the best hitches. Handles the trailer with ease. Excellent purchase and has made towing our 42 ft toyhauler much easier. Great product. Thank you



by:

This was the brackets needed to install the Demco underbed Hijacker fifth wheel hitch on my Dodge RAm 2500. Perfect fit, fast ship, package arrived without any damage. Great service from ETrailer



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Very well made. Fit directly into my new truck under bed mounts. Now I can get rid of the adapter system. This allows the fifth wheel hitch to be set at the proper height. (would not go low enough with the adapter in place)



by:

Great shipping - double boxed.
Installation
just as described in instructions.



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Great fit,heavy duty parts.



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See what our Experts say about this Demco Accessories and Parts

  • How to Install the Demco 18K Hijacker Autoslide 5th Wheel Trailer Hitch on a 2011 GMC Sierra 2500
    In order to mount the Demco 18K Hijacker Autoslide 5th Wheel Trailer Hitch part # DM8550022 in the bed of your 2011 GMC Sierra 2500 you will need to use the Underbed Rail and Installation Kit for Demco Hijacker Hitches part # DM8551010. The Replacement Side Plates for Demco Hijacker Autoslide 5th Wheel Trailer Hitches part # DM6004 that you referenced is designed to allow the above bed version of the Demco 18K Hijacker Autoslide 5th Wheel Trailer Hitch part # DM8550034 to be used with...
    view full answer...
  • Will the Demco Hijacker Autoslide 5th Wheel Trailer Hitch fit 2022 Ram 3500 With OEM Prep Package
    It sounds like you want to know if the Demco Hijacker Autoslide 5th Wheel Trailer Hitch w/ Slider like the # DM8550034 will fit your 2022 Ram 3500 with 6-1/2 Foot Bed and OEM Prep Package. This will work for your Ram 3500, but you will also need the Demco 5th Wheel Rail Adapter for Ram OEM 5th Wheel Towing Prep Package # DM6099. Once you have installed this rail adapter, you will be able to use a 5th-wheel trailer hitch like the Demco Hijacker Autoslide that attaches to standard, above-bed...
    view full answer...
  • How To Use the Demco Hijacker Autoslide Hitch on a 2020 GMC Sierra 2500 with the Factory Prep
    In order to use the Demco Hijacker Autoslide 5th Wheel Trailer Hitch on a 2020 GMC Sierra 2500 with the Factory Prep Package you will need the Replacement Side Plates for Demco Hijacker Autoslide 5th Wheel Trailer Hitches part # DM6003 and the Demco 5th Wheel Rail Adapte part # DM6333. The Replacement Side Plates for Demco Hijacker Autoslide 5th Wheel Trailer Hitches part # DM6004 is for the Demco underbed system and won't work with the GM underbed system.
    view full answer...
  • Below Bed Base Rails for 2002 Ford F-250 and Demco Hijacker Autoslide 5th Wheel Trailer Hitch
    You can absolutely use the 18,000 lb Demco Hijacker Autoslide with the underbed rails on your 2002 Ford F-250 crew cab. What you need are the following: - Underbed Rail and Installation Kit for Demco Hijacker # DM8551000 - Demco Hijacker Autoslide 5th Wheel Trailer Hitch with Slider - 18,000 lbs # DM8550022 As you mentioned, this is also compatible with the 21,000 lb version of the Hijacker # DM8550037. Additionally, if your '02 F-250 has the factory 7-way but you need a 5th wheel wiring...
    view full answer...
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  • Will Demco Underbed Base Rails & Autoslide 5th Wheel Fit 2001 Chevy Silverado 3500 Long Bed
    Your 2001 Chevy Silverado 3500 with an 8 foot bed will be able to utilize the Demco underbed base rails along with the Autoslide hitch; the part number for the base rails is the following: - Underbed Rail and Installation Kit # DM8551004 This will work with the Demco Hijacker Autoslide 5th Wheel Trailer Hitch w/ Slider - Underbed # DM8550022. That part is the combination of the Replacement Head and Base Assembly for Demco Hijacker Autoslide 5th Wheel Trailer Hitches # DM6077 and the...
    view full answer...
  • Side Plates For Demco 21K Autoslide 5TH Wheel Hitch To Fit Demco UMS For 2019 Ford F-350 Super Duty
    To convert the Demco Autoslide 5th Wheel Hitch # DM8550038 from fitting the Ford under bed system to the Demco under bed you will need the Side Plates # DM6004. These will replace the current side plates and include new hardware. The Underbed Rail and Installation Kit # DM8551009 is the custom fit Demco UMS system which will fit a 2019 Ford F-350 without the factory under bed system.
    view full answer...
  • Side Rail Kit for 21K Demco Hijacker to Fit UMS Underbed Kit on 2020 Chevy Silverado 2500
    Yes! To convert the 21K Demco Autoslide 5th Wheel Trailer Hitch w/ Slider # DM8550035 to the Hijacker # DM8550037 you just need the Side Plate Kit # DM6004. This is for the Demco UMS underbed system so in order to install this on your 2020 Chevy Silverado 2500 you need the Underbed Rail and Installation Kit # DR37FR. This kit is similar to an OEM puck system for any truck but Demco has their own spacing for the mounting holes so you can only use Demco 5th wheel hitches that have the UMS...
    view full answer...
  • Replacing The Demco Hijacker Autoslide Side Plates On My 2020 Chevy Silverado 3500hd
    Your factory OEM 5th Wheel Towing Prep Package should be setup with the 21,000 lb, model DM8550037. If this is the case the Replacement Side Plates for Demco Hijacker Autoslide 5th Wheel Trailer Hitches - Underbed Mount, part # DM6004, will work with your 2020 Chevy Silverado 3500HD with the short bed underbed mount. You will also need the Demco 5th Wheel Rail Adapter for Chevy/GMC OEM 5th Wheel Towing Prep Package - 21K, part # DM6333. This will work with your factory-installed, underbed...
    view full answer...
  • Parts Needed To Convert A Demco Autoslide 5th Wheel Hitch To A Below-Bed Mount
    Yes, you'll just need to order the correct underbed rails and new side mounting plates for the Demco Autoslide 5th Wheel Trailer Hitch # DM8550035. For a 2022 Chevy Silverado 2500 you'd need the Underbed Rail and Installation Kit for Demco UMS 5th Wheel # DR37FR. For the hitch you'd have to unbolt the side plates and swap on the Replacement Side Plates for Demco Autoslide 5th Wheel Trailer Hitches # DM6004. The levers will make connecting to the underbed rails quick and simple. I also...
    view full answer...
  • Underbed Installation Rails and 5th Wheel Hitch for 2019 Chevy Silverado 1500 with 6-1/2 Foot Bed
    The Underbed Rail and Installation Kit for Demco Hijacker # DM8551011 is absolutely a fit for your 2019 Chevy Silverado 1500 with a 6-1/2 foot bed and this does come with the needed hardware for installation. There is a fantastic hitch for this rail kit and your truck, though the part # DM6004 you referenced is simply a replacement part for a hitch. The hitch that does fit these rails is the is the Demco Hijacker Autoslide # DM8550022 which is a hitch you'll be thrilled you have because...
    view full answer...
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  • Parts Needed To Install Demco Hijacker Auto Slide 5TH Wheel Hitch in 2019 Ram 2500
    As long as the Demco Hijacker has mounting tabs like the Demco Autoslide 5th Wheel Trailer Hitch # DM8550034 you will only need the Rail Kit # DM8552025-71. This kit will allow you to install the above bed 5th wheel rails in your 2019 Ram 2500. If the hitch has the Demco Underbed # DM6004 or another factory set of mounts you will need to replace the mounts with the Side Plates # DM6003. These plates allow you to use above bed rails.
    view full answer...
  • Parts Needed To Install Demco Autoslide 18K 5TH Wheel Hitch On 2019 GMC Sierra 2500 With UMS
    Yes, you do have the correct part numbers. For your Demco Autoslide 5th Wheel Trailer Hitch # DM8550034 the Side Plates # DM6003 are the part number 6003 you referenced. To mount on the Underbed Rail and Installation Kit # DM8551010 for your 2019 GMC Sierra 2500 you will need the Side Plates # DM6004.
    view full answer...
  • Parts Needed To Install Demco Hijacker Autoslide With Underbed Rails On 2017 Silverado 2500 Diesel
    I definitely understand how the above bed rails can get in the way when your Demco Hijacker Autoslide 5th Wheel Trailer Hitch w/ Slider # DM8550034 is removed. There is a way to convert your Hijacker # DM8550034 to underbed rails but you will need to install the Underbed Rail and Installation Kit for Demco Hijacker # DM8551010 and remove your current above bed rail system. You can then use Replacement Side Plates for Demco Hijacker Autoslide 5th Wheel Trailer Hitches # DM6004 to allow...
    view full answer...
  • Theft Options For A Demco Autoslide 5th Wheel Trailer Hitch In A 2012 Ram 2500 Bed
    With the Demco Autoslide 5th Wheel Trailer Hitch w/ Slider # DM8550022 weighing in at 300lbs the likelihood of it being stolen is pretty slim but there are still a couple options that you can take to help prevent theft. On the side mounting plates # DM6004 there are pins that prevent the puck handles from turning that you could pop out and put in some padlocks to prevent the handles from moving making it impossible to remove from your bed. The holes for these pins are just over 3/8" thick....
    view full answer...
  • How to Use Demco Hijacker Autoslide 5th Wheel Hitch in Factory Pucks on 2022 Chevy Silverado 2500
    How does your current Demco Hijacker Autoslide mount? If it's meant to attach to industry standard bed rails such as those provided with # DM6071, you'll need a puck to rail adapter like # DM6333. If your hitch side plates are meant for the Demco underbed mounts, you'll need to remove them and install the above bed mount side plates, part # DM6003 which will fit into the slots provided by the # DM6333.
    view full answer...
  • Side Plates For Different Mounting Attachements on Demco Autoslide 5TH Wheel Hitches
    Yes, you can change the side plates on the Demco Autoslide 5th Wheel Hitch # DM8550024 for the Ford prep/puck system to fit other vehicles. Here is a list of all the side plates and the different mounting options they fit. 2020+ GM Side Plates # DM49GV Ram Side Plates # DM99GV Industry Standard Rail Side Plates # DM6003 Demco UMS Side Plates # DM6004 Ford Side Plates # DM6033
    view full answer...
  • How to Mount the Demco Hijacker Autoslide 5th Wheel Trailer Hitch on Short Bed 2017 Ram 2500
    The item that you linked to, the Demco Hijacker Autoslide 5th Wheel Trailer Hitch, # DM8550022 is an underbed Mount 18K Auto Slide. Unfortunately, Demco is not able to fit the 2017 Ram 2500 with their Underbed Mounting System, UMS. The Ram 2500 has a large cross member in the frame just above the rear axle. The Demco UMS has to mount directly above the rear axle and the factory cross member interferes with the ability to mount the Demco UMS where needed for purpose of setting the hitch...
    view full answer...
  • Fifth Wheel Rail Kit to Install Demco AutoSlide Fifth Wheel Hitch in 2019 Chevy Silverado 3500
    The Demco Hijacker Autoslide hitch part # DM8550034 is a great hitch that can easily be used in the bed of your 2019 Chevy Silverado 3500 without the factory rail kit. Demco recommends their rail kit part # DM8552011-71 which is a confirmed fit for your 2019 Chevy Silverado 3500. This is a custom fit kit which means it will minimize drilling and install time when compared to a universal kit.
    view full answer...
  • How to Use Underbed Demco Hijacker Autoslide 21K in Bed of 2019 GMC 3500 Sierra with OEM Rail Kit
    You'll need to install the above-bed style side plates on your Demco Hijacker 21k with part # DM6003 so that you can use the GM rail kit adapter for short bed trucks part # DM6194. This adapter fits the rail kit in your 2019 GMC 3500 Sierra short bed and will fit your Demco hitch once you install the side plates # DM6003 on them.
    view full answer...
  • Weight of Components in Demco Hijacker 13K Autoslide 5th Wheel Hitch
    The head( # DM6081) of the 13K Demco Hijacker Autoslide weighs 65lbs, the base weighs 210lbs, and the above the bed brackets( # DM6003) 30lbs while the puck mounting under bed brackets( # DM6004) weigh 42lbs totaling to 305-317lbs. This will add weight to your truck, but it's minor compared to the weight the hitch is capable of towing. The # DM6141 is just the head and base while the # DM8550040 is the system with above the bed rail brackets and the # DM8550041 is the unit with the puck...
    view full answer...
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  • Can the Demco Hijacker 8550034 be Used with an Under Bed Mount Kit on a 2019 Chevy Silverado 3500
    Absolutely, the Demco Hijacker Autoslide 5th Wheel Trailer Hitch part # DM8550034 is for above bed mounting rails. However, you can make it compatible with the underbed mounting kit for your 2019 Chevrolet Silverado 3500 which is the Underbed Rail and Installation Kit for Demco Hijacker part # DM8551010 by obtaining the Replacement Side Plates for Demco Hijacker Autoslide 5th Wheel Trailer Hitches part # DM6004. I also recommend that you purchase an in-bed 7-way like the Demco 5th Wheel/Gooseneck...
    view full answer...

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Info for this part was:

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Employee Lindsey S
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