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Replacement Head Unit for Curt A16 and Q16 5th Wheel Trailer Hitches - 16,000 lbs

Replacement Head Unit for Curt A16 and Q16 5th Wheel Trailer Hitches - 16,000 lbs

Item # C16520
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Curt Accessories and Parts - C16520
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Replacement head unit fits Curt A16 and Q16 fifth-wheel trailer hitches. Call 800-298-8924 to order Curt accessories and parts part number C16520 or order online at etrailer.com. Free expert support on all Curt products. Guaranteed Lowest Price and Fastest Shipping for Replacement Head Unit for Curt A16 and Q16 5th Wheel Trailer Hitches - 16,000 lbs. Accessories and Parts reviews from real customers.
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Curt Accessories and Parts - C16520

  • Fifth Wheel
  • Head
  • Curt
  • Head Assembly

Replacement head unit fits Curt A16 and Q16 fifth-wheel trailer hitches.


  • Replaces head unit on your Curt A16 or Q16 5th-wheel trailer hitch
  • Provides 360-degree jaw-to-king-pin contact with interlocking 2-piece jaw
  • Ensures secure towing with 3-point, color-coded lock indicator system
  • Fully articulates for controlled coupling and a stable, quiet ride
  • Removes quickly and easily with 1 pin
  • Lockable handle lets you easily secure trailer to hitch with padlock (sold separately)
  • 2 Built-in zerk fittings for easy lubrication
  • Included plastic lube plate lets king pin glide smoothly into hitch during hookup
  • Constructed of sturdy steel with durable, carbide powder coat finish


  • Application: Curt A16 and Q16 5th-wheel trailer hitches
  • Gross towing weight: 16,000 lbs
  • Vertical load limit: 4,000 lbs

16520 Curt A16 (Q16) Fifth-Wheel Trailer Hitch Head Unit

Video of Replacement Head Unit for Curt A16 and Q16 5th Wheel Trailer Hitches - 16,000 lbs

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

Video Transcript for Curt Fifth Wheel C16520 Review

Today we're going to review part number C16520. This is the Curt Replacement Head Unit for the Curt Q16 5th Wheel Trailer Hitches, has a 16,000-pound weight capacity. Now this is the replacement head unit that will fit the Curt Q16 5th wheel trailer hitches. Includes everything shown here on the table; includes the hitch assembly. It includes the loop plate that goes on the king pin of your 5th wheel. It does include the bolts and knots that are used to attached these cross member to the legs of the hitch and includes a nice booklet of detailed instructions, which shows some nice pictures and detailed instructions on how to install it correctly. This will provide a 360-degree jaw-to-king-pin contact, has the dual jaws right here. For demonstration, I have an example of a king pin in the hitch just to show you how it wraps around the king pin.

This is unlike a lot of the slide bar models because it has the rounded 2-piece jaw right here that will prevent rattle and movement by wrapping around the king pin; results in an easier hookup and a safer, quieter ride. The head itself does pivot side to side and front to back for smooth towing and simple hookup. It is cushioned to absorb road shock. You can remove this head very easily from the cross member. Basically, if you just pop this little clip right here, and this large pivot pin will pull out from the back here, you'll be able to lift the head out from the cross member. Now the cross member itself, I will rotate the table here just to give you an idea, if you look on the side, there's 3 rows of holes on each side of the cross member and basically that's used to get the correct hitch height when your attaching this to the legs of the hitch. So basically, using the included hardware when you go to bolt this on to your legs of your hitch, you can calculate the correct hitch height which is from your truck bed to the top of this head here for your specific application. It does ensure secure towing.

It uses a 3-point color coded lock indicator system. I'm going to rotate it even some more to show you that on the back. This is what you'll see from the cab of your tow vehicle. You see as I rotate it, it has a little chart there that shows red as uncouple, green is tow and yellow is couple. Right now you can see with this king pin installed in here, you can see that it's showing green, which means it's locked in position ready for towing. If you want to remove it, I have the pin already in there so you just remove the pin and clip.

Pop the pin and clip out and then what you'll do is to uncouple. Here's your handle right here, you just pull it out about a half an inch and rotate it back towards the tow vehicle. When you do that it releases the king pin and as you can see it'll show you yellow, which means the king pin is out of it and it's ready to be coupled. It's a very easy way to tell what position your jaws are in. This is constructed of sturdy steel; has a durable, carbide powder coat finish. Again, the application on this is for Curt Q16 5th wheel trailer hitches.

The gross towing weight capacity is 16,000 pounds Vertical load limit or pin weight capacity on this is 4,000 pounds It does have a limited lifetime warranty. Now I just want to show you again, we're going to move this king pin into the . and you can see as it comes into position, shows green, which means it's in position. The handle moves forward automatically, locks into position and then you just drop your pin and clip through the hole. Put the clip on it, your handle is locked into position so you're ready to tow. Very easy indication of where to position the jaws are in. That should do it for the review on part number C16520. This is the Curt Replacement Head Unit for the Curt Q16 5th Wheel Trailer Hitches, has a 16,000-pound weight capacity. .

Customer Reviews

Replacement Head Unit for Curt A16 and Q16 5th Wheel Trailer Hitches - 16,000 lbs - C16520

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

Replacement head unit fits Curt A16 and Q16 fifth-wheel trailer hitches.

- C16520

Works great! I am sorry I did not buy it in the beginning. But, I didn't know what I was doing and the original sales person (not e-trailer) was not very helpful. I am very happy with the service I got from E-trailer 683088

- C16520

What a great experience. What could have been a disappointment, Kim and the other Customer Service personnel were great. A damaged box resulted in a missing handle for my 5th wheel mount and etrailer staff made it right and expedited the missing part to me so I could pick up my new camper on time. I am sold on etrailer. Thanks for all you do!!!!! 461177

- C16520

Curt A25 fifth wheel hitch... received in record time ,box was damaged and the pull arm was bent. Called Etrailer and they sent me another pull arm immediately. Great customer service, will continue to do business here. Thanks Molly and George 448780

- C16520

No one else had this at the price etrailer afford 422879

I love the product. Thats why I bought a second one when I destroyed the first one. I contacted Curt and we never could resolve the problem being able to put the Teflon plate between the fifth wheel in the hitch. I called to see if they could help you with that problem and they were puzzled. Sent numerous pictures so it must be on my end but I dont understand why the original hitch I purchased work very well and then I replace the head and the Teflon plate will not work there just not enough room but as far as the product goes I think its the best one out there its quiet no clunking. I hear all kinds of stories but this one works flawless.
Alan - 08/20/2018


- C16520

quick ship, correct part, damage free. will do business again 230845

Upgrade truck from 2500 to 3500 Dually NJ to Florida 14,000 lb 5th wheel Curt Q16520 hitch flawless, smooth... 5 Star
joe m - 11/02/2016


Ask the Experts about this Curt Accessories and Parts

  • Which Head Units fit Curt 5th Wheel Hitch Legs?
    Only certain Curt head units will fit the Curt 5th Wheel Hitch Legs # C16026. Those are the Curt E16 # C16515, A16 # C16520, Q20 # C16530, and A20 # C16540. I've left a video review of these legs for you to take a look at as well.
    view full answer...
  • Why is Reese Sidewinder Pin Box Not Compatible with Curt Q Series Hitch?
    The rotating pin boxes like the Sidewinder Fifth Wheel King Pin with Rotating Turret by 5th Airborne, 16K # ST400-SW16K are not compatible with the Curt Q series hitches because of the hitch head design that had a unique spherical axial bearing. That system allowed too much movement for any of the rotating pin boxes to be compatible. If you already have a Q series hitch, I recommend simply changing the head of the hitch with the Curt A series 16K # C16520 or 20K # C16540. Either...
    view full answer...
  • What 5th Wheel Hitch Heads Can Be Used With The Curt R16 Round Tube Slider on a 2002 GMC Sierra 2500
    If you just have the Curt R16 Round Tube Slider part # C16560 then you will also need a hitch head and set of base rails and frame brackets. This will then provide you with everything you need to attach the trailer to your tow vehicle. For a 5th wheel hitch head you have three different options, the Replacement Head Unit for Curt E16 Fifth Wheel Trailer Hitch part # C16515, the Replacement Head Unit for Curt A16 5th Wheel Trailer Hitches part # C16520, or the Replacement Head Unit for Curt...
    view full answer...
  • What Height Setting Should Head of Curt A16 Hitch Use
    The height setting you'll need to use when installing the Curt A16 head part # C16520 that you referenced is going to be based on what your trailer needs to sit level. The height of the head is adjustable as well as how the pin box attaches to the trailer which gives you flexibility to have your trailer sit as level as possible which gives you the best towing experience. The other thing you'll need to consider is that you'll need to have at least 6 inches between the overhang of the...
    view full answer...
  • Curt Q16 Replacement Legs for Factory Puck System in 2019 Ram 2500
    Since the Curt A16 # 16520 is the direct replacement for your existing Curt Q16 5th wheel hitch, these replacement legs # C16021 are going to work with your Q16 and fit into the pucks on your 2019 RAM 2500 without issue. If you need new wiring for your truck and 5th wheel I recommend going with the Curt # C56070 which provides a 7 way connector for your 5th wheel trailer in the bed of your truck.
    view full answer...
  • Difference Between the Curt A16 Fifth Wheel Hitch Head and the E16
    The Head Unit and R16 Roller Adapter # C16515 is more of an entry level fifth wheel head designed for a lower price point, whereas the A16 part # C16520 is a bit nicer with it's 2 piece jaw system that will provide better king pin contact which will minimize movement and noise. The A16 also features a color indicator system so that you can look at the indicator on the rear of the hitch to determine whether the jaw is in the correct position to uncouple (red), couple (yellow) or tow (green). Both...
    view full answer...
  • Curt Hitch Compatibility with Reese Elite Under-Bed Rail Kit
    The Reese Under-Bed Rail and Installation Kit for Reese Elite Series 5th Wheel Trailer Hitches # RP30061 can be used with a Curt legs # C16017 and a Curt hitch like # C16520. The max capacity will be limited by the hitch head or the Elite rails which are rated for 18,000 lbs. The Ford OEM system is the same as the Reese Elite system because Reese started that style of clean connection. Other manufacturers followed and altered the measurements so not all OEM legs will work with the...
    view full answer...
  • What is the Width of the Heady Support for Curt Q16 5th Wheel Trailer Hitch
    We havea Q series Curt 5th wheel hitch on display in our store so I went to measure the width of the head support. I measured 18 inches. I then called Curt to confirm and it is indeed 18 inches.
    view full answer...
  • Which Curt 5th Wheel Hitches are Not Compatible with a Sidewinder Pin Box?
    The Curt Q-series 5th wheel hitches are the only Curt hitches not compatible with a Sidewinder pin box. This incompatibility is due the to a unique 360 degree spherical axial bearing in that hitch head. If you have a Q-16, Q-20, Q-24, or Q-25 then I recommend replacing just the head with the following: Replacement Head Unit for Curt A16 and Q16 5th Wheel Trailer Hitches - 16,000 lbs # C16520 Replacement Head Unit for Curt A20 5th Wheel Trailer Hitch - 20,000 lbs # C16540 Replacement...
    view full answer...
  • Curt A16 5th Wheel Hitch Head Compatibility with Curt R5 Slider Base
    Your Curt R5 Fifth Wheel Trailer Hitch Roller 16500 will absolutely work with the A16 Replacement Head Unit for Curt A16 and Q16 5th Wheel Trailer Hitches - 16,000 lbs # C16520. I confirmed this with my contact at Curt. That part has been discontinued and replaced with the # C16550 which is also a fit. This will be a really nice upgrade from your E16 hitch head.
    view full answer...
  • Solution for Towing Crusader 5th Wheel Camper with 2015 Ford F-250 Short Bed, with Tow Package
    The easiest solution for you to be able to tow your 5th wheel camper with your 2015 Ford F-250 short bed truck is the replace the base of your fixed 5th wheel hitch with a sliding base. For your Curt A16 5th Wheel Trailer Hitch with Ford OEM Legs # C16520-16017, the correct slider hitch base is the Curt 5th wheel Round Tube Slider for Ford Super Duty Towing Prep Package # C16020. This slider base will attached to your existing hitch head # C16520 and fit in the factory puck system in...
    view full answer...
  • Is the Curt E16 5th Wheel Hitch Head Compatible With A16 Legs?
    The Replacement Base Legs for Curt A16 5th Wheel Trailer Hitch # C16920 are NOT compatible the E16 head # C16515. Although they may bolt up Curt says are not compatible. You will need to either upgrade the head to the A16 # C16520 and use the A16 legs or use the Replacement Base Legs for Curt E16 5th Wheel Trailer Hitch # C16903 with the E16 head # C16515. The A16 is a much better option but at a greater expense. The E16 legs with the E16 head are much more cost efficient but is...
    view full answer...
  • Can Head of Curt E16 Fifth Wheel Hitch be Replaced with Q20
    Yes, the Curt Q20 head part # C16520 can replace the Curt E16 hitch head you have and would work well as a way to upgrade your fifth wheel hitch setup.
    view full answer...
  • 5th Wheel Hitch Recommendation for Sidewinder-Equipped Keystone Raptor 5th Wheel
    The two easiest ways to lift your 5th wheel trailer height so it is level when hitched are to install taller spring hangers on the trailer and to also install axle over-under kits. Both of these will lift the height of the trailer. Our page for trailer leaf spring hangers for triple-axle trailers is linked for you. These include hangers as tall as 5+ inches, such as # 115919. We have axle over-under kits # K71-384-00 and # K71-385-00 which fit 2-3/8-inch and 3-inch diameter axles....
    view full answer...
  • Will Curt Hitch Legs Work With Tuff Tow Fifth Wheel Hitch
    The Curt OEM 5th Wheel Hitch Legs for Chevy/GMC Towing Prep Package # C16025 will fit in the pucks of a 2017 GMC Sierra, though they are not compatible with a Tuff Tow hitch. The legs are designed to work with head units # C16515, # C16520, # C16530, # C16545 and # C16565. I have added a link to our page with each of the fifth-wheel hitches that are compatible with 6-1/2 foot bed 2017 GMC Sierra 3500's that have the factory rail kit.
    view full answer...
  • Replacement Head For Curt A16 and Q16 5th Wheel Trailer Hitches
    The Replacement Head Unit for Curt A16 and Q16 5th Wheel Trailer Hitches # C16520 will fit the Curt A16 5th Wheel Trailer Hitch Dual Jaw 16,000 lbs # C16120.
    view full answer...
  • Could Curt E16 Fifth Wheel Hitch be Upgraded to Q16 Hitch
    The Curt E16 and Q16 use the same slider base. The Q16 head is # C16520 so it will fit the same slider base that is on your E16 now.
    view full answer...
  • Fit of Curt # C16020 Slider w/ # C16515 Fifth Wheel Hitch Head on 2015 Ford F250 w/ Factory Prep Pkg
    The Curt # C16020 slider unit is compatible with the Curt R16 head unit, part # C16515. I've confirmed this with Curt for you. This being said, the C16515 uses a slide bar jaw. A slide bar jaw will do a good enough job of securing the king pin that it won't come loose, but it will allow the king pin to move round in the hitch. This will lead to fore and aft banging and clanging when you brake and accelerate, which can get old if you tow for long distances. An upgraded head like the #...
    view full answer...
  • Will a Curt Q16 5th Wheel Trailer Hitch Head Fit in Place of an E16 Head on a Curt Slider Base
    The Curt E16 and Q16 use the same slider base. The Q16 head is # C16520 so it will fit the same slider base that is on your E16 now.
    view full answer...
  • Weight of Head Unit and Base of Demco Recon Fifth Wheel Hitch
    The Demco Recon 5th Wheel Trailer Hitch # DM8550043 is made up of the Head Unit # DM6169 and Base Assembly # DM6180, with each piece weighing 50 lbs, making this most lightweight, easy-to-handle fifth wheel hitch available. In terms of locking it the only security measure is a Base Rail Lock # C23256 which locks the hitch to your base rails. There is no way to padlock it to prevent someone from releasing the hitch, though you'd have to be extraordinarily unlucky for someone to just walk...
    view full answer...
  • Can Head on Fixed Curt E16 Hitch Be Replaced with Curt A16 Head
    I spoke with my contact at Curt regarding your E16 5th Wheel Trailer Hitch # C16115. He stated that the legs/base on this model hitch are not compatible with the Curt A16 Replacement Head # C16520. In order to replace the head on your hitch, you will need to stick with the E16 # C16515. Otherwise, you can simply replace the entire assembly with the Curt A16 # C16120. This will provide you with an upgraded 2-jaw system that will allow for a much better connection with the trailer, resulting...
    view full answer...
  • Replacement Legs for Curt A16 5th Wheel Head to Use with Factory Pucks on 2018 Ram Truck
    Yes, the Curt A16 Head Unit # C16520 referenced in your question will fit and work perfectly with the Curt OEM 5th Wheel Hitch Legs # C16021. Assuming you have the A16 head already, this will allow you to convert your existing hitch for use with the factory pucks on your 2018 Ram truck. I have attached a short video demonstration on this leg assembly that you can also check out.
    view full answer...
  • Adapter Rails for Curt 5th Wheel Hitch Head for a 2017 Ford F-350 With Prep Package
    If you currently have the R20 Round Tube Slider # C16550 with your Curt hitch head, like the Q20 # C16530, then you will simply need the Slider # C16020 (for 6-3/4 foot bed) or the Legs # C16017 (for an 8 foot bed) which are compatible with the 2017 Ford F-350 prep package. These 2 options are compatible with the A16 # C16520, E16 # C16515, Q16 # C16520, Q20 # C16530, and Q24 # C16545 Curt hitch heads.
    view full answer...
  • Will Curt 5th Wheel Round Tube Slider Fit 2014 Ford King Ranch, 6-3/4 Foot Bed with Prep Package
    Yes, the Curt 5th Wheel Round Tube Slider # C16020 will fit into the Ford Factory 5th Wheel Prep Package. The slider will work great with your 2014 Ford F-Series with a 6-3/4 foot bed with the prep package. To complete the 5th wheel hitch, you will also need a hitch head. I recommend the Replacement Head Unit for Curt Q16 5th Wheel Trailer Hitch # C16520. If you will need a wiring harness to connect the trailer plug from your 5th wheel to your truck, I recommend the Hopkins Endurance...
    view full answer...
  • Curt Fifth Wheel Hitch Recommendation that Smoother Than E16 Slider
    The Curt E16 slider hitch has a lot of play in the slider assembly like you noted but also quite a bit in the jaw system as it's a slide bar style that allows the king pin to move around quite a bit when latched. If you wanted a much smoother Curt fixed hitch your best option is the Curt A16 hitch part # C16120. The jaw design of this hitch provides a 360 degree contact with the king pin which holds it very tight and minimizes noise. Now the head will be located right over the rear...
    view full answer...
  • Can Curt Q20 Hitch Head Fit on R16 Curt Slider Base
    The bolt pattern that holds the Q20 hitch heads is different from the Q16 setups. What this means is that the Q20 head would not fit on a Q16 slider so your best option is to go with a Q20 slider hitch like the part # C16536 or you may be interested in the upgraded A20 slider part # C16541 which has an improved jaw design that holds the trailer king pin a bit tighter.
    view full answer...
  • Is the Curt E16 Fifth Wheel Trailer Hitch Head Offered Without the Center Section
    It sounds like you may already have the Curt OEM 5th-Wheel Hitch Legs for Ford part # C16017 with the R5 Roller Adapter part # C16505 attached to it but still need the head. If that is the case then you will want to use the Replacement Head Unit for Curt E16 Fifth Wheel Trailer Hitch part # C16515 and just remove the center section from the head as they are sold as a pair, not separately. If this is not what you are referring to then please send me a photo of what you have and I can...
    view full answer...
  • Can Curt E16 Fifth Wheel Hitch Head be Replaced by A16 Head
    Yes, you can replace the head of your E16 Curt fifth wheel hitch with an A16 hitch head part # C16520 and have a much better king pin contact which means much less noise.
    view full answer...

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Used Items Available

Condition: Missing Parts

Notes: Missing parts 4 through 9 on parts list. Also missing manual. All other parts in good condition. Never installed or used.

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Condition: Missing Parts

Notes: Item is missing the handle, lock lever and the hardware.

Our Price: $130.74
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Condition: Missing Parts

Notes: Item is missing the hardware and handle. Otherwise new and unused.

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Condition: Missing Parts

Notes: Item is missing all of the hardware. Otherwise new and unused.

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Info for this part was:

Video by:
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Video by:
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Expert Research:
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Installed by:
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Installed by:
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Installed by:
Robert C
Written by:
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Video Edited:
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Updated by:
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