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Sidewinder Wedge for Curt E16 5th Wheel Trailer Hitches
CURT

Sidewinder Wedge for Curt E16 5th Wheel Trailer Hitches

Part Number: C16991
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Bolt this wedge onto your Sidewinder to prevent the Sidewinder's king pin from rotating in your Curt E16 fifth-wheel trailer hitch. 1-800-940-8924 to order CURT accessories and parts part number C16991 or order online at etrailer.com. Free expert support on all CURT products. Great prices and Fastest Shipping for Sidewinder Wedge for Curt E16 5th Wheel Trailer Hitches. Accessories and Parts reviews from real customers.
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  • Reviews (8)
  • Q & A (0)
  • Videos (1)
  • Photos

CURT Accessories and Parts - C16991

  • 5th Wheel Pin Box
  • Wedges
  • Curt 5th Wheel
  • CURT

Bolt this wedge onto your Sidewinder to prevent the Sidewinder's king pin from rotating in your Curt E16 fifth-wheel trailer hitch.


Features:

  • Prevents Sidewinder king pin from pivoting in your hitch
    • Works with Curt E16 5th-wheel trailer hitches
  • Bolts onto Sidewinder in place of universal wedge
  • Resists corrosion with durable carbide black powder coat finish


16991 Curt Locking Wedge for E 16 Fifth-Wheel Hitches





Video of Sidewinder Wedge for Curt E16 5th Wheel Trailer Hitches

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




Video Transcript for Curt E16 5th Wheel Trailer Hitches Sidewinder Wedge Review

Hey guys, Kevin here with etrailer and today we're gonna be taking a look at the custom fit Sidewinder wedge kits for the Curt E16 5th wheel hitch. As you can see, we have three different custom fit wedge kits. Four are E16 and there are a little bit of a difference in the designs. These two right here, we have our Curt and then we have two Reese ones. These are gonna be more like what you'll see generic that comes with your Sidewinder, or maybe if you have a Lippert Turning Point, you'd see some kind of generic wedge like that. And these are pretty typical, pretty easy to put in place.

So whenever you lock in your king pin into the hitch head, this Sidewinder wedge is going to come up and slip into place. And what it does is it prevents the kingpin from being able to turn. So when our Sidewinder's in place we're not gonna have two pivot points because we want that pivot point to be pushed back at the connection point at the trailer so that we gain that extra turning clearance. Now with the different designs each is gonna give you a little bit more pressure on the funnel itself and that's just gonna kinda take off the pressure from a certain other point. So if you have too much pressure on one side you can kind of get a little bit more wear and tear on it versus these custom fit wedges where it's gonna kind of fit and fill in that funnel and just kind of spread out that pressure.

Now with the Curt one, obviously with it being just a rectangle shape, it's only gonna slip in there. It's not actually gonna touch the funnel at all. With this Reese one here, you can see it's kind of a fan shape, so it kind of fits that funnel a little bit better. So it's gonna put pressure all along it and spread it out evenly. Now with our other Reese one here, I was having some difficulties.

The paint that they put on it is pretty thick so me pushing it up against it isn't really getting it to pop in place. Obviously when you back your truck up to the trailer and you get it in, it'll pop right in. But you may see that on this specific wedge. I tried a couple of them, they all seem to have a little bit too much paint on 'em. But same concept here, basically this rectangle portion's gonna pop inside of our hitch head and then we'll have this slanted portion pressing against the funnel.

Now I don't want to kind of push you away from your generic Sidewinder wedge. You can still use that. It's still safe. I just prefer to use the custom ones and I always recommend them just because it just evenly distributes that weight across the whole hitch head and I just prefer to take that extra step and keep my hitch looking nice and brand new. Now with these, it's a simple two bolt installation. You'll notice on one side it kind of has a divot in, that side is going to have the bolt head. So when we're looking at our pin box we would have this side facing down. The bolt would slip through and screw into the plating into our pin box. Here we have the same setup but this one also has a little track on the outside so it kind of keeps it in that line. And same thing with our other one over here. This one's got a little bit less to it. This one's pretty flat with just a little bit of space in here. And you can see there's a little bit of a weld spot on there to kind of separate the two bolt heads. Now we've gone over some of the specifics of our wedge kits. Let's go ahead and show you how to install it. So here we have a trailer with a Reese Sidewinder. Here's the generic like rectangle-shaped Sidewinder wedge kit that's typically gonna come with your Sidewinder. If you look back here, you can see the rotary wheel. And what this does is it allows our wedge kit to kind of move back and forth so that we can kind of fine tune exactly where it needs to sit. So if I pull this pin out and I turn it, so turning it counter-clockwise here, if I'm facing towards the trailer, is gonna push it forward more towards the king pin. And then if I put it back clockwise, we can get it kind of back towards the trailer. Now one little tip I do recommend doing is once you find that sweet spot of where this needs to sit so that it properly aligns in the head of the hitch, go ahead and just mark it. So like our neighbor today, they've already marked it. You can kind of see it, it's a little bit scratched up just from connecting to the hitch but there's a yellow marker on here, so that way you know exactly where it needs to sit every single time. You can easily put it back to where it needs to be and pop your clip back in. But let's go ahead, we'll take this off and show you how to put on a new one. So here is our old generic Sidewinder wedge kit. If you see right here, it has one less tab on it, on this part. This is gonna be facing towards our hitch 'cause it's gonna kind of overlap the head a little bit. And then it'll stop right about here. So with our new one, we're gonna copy that as well. We'll have that facing towards our hitch. And I'm gonna go ahead and just reuse the same bolts. So we'll go ahead and get down under our pin box. And right here is that little plate I was talking about that we can bolt into. Go ahead and place our wedge up here. Just hand tighten that in for right now, so we get this fully set and then we can use our wrench. Once we have 'em pretty tight we can go ahead and torque 'em down. Also, gonna go ahead and back this one up a little bit. This is a little bit larger than our last one, so we're gonna need to push it out of the way. We'll hook up to our kingpin and then we'll go ahead and select this into place, get it in the right position. Now we're hooked up to our hitch, we can go ahead and start turning our rotary wheel and get it fully locked up in position here. Pretty tight. All right, once we got in a position that we like, you can go ahead and slip our pin back in place and we're good to go. Well, I think about does it for today's look at our custom fit Sidewinder wedge kits here for our Curt E16 5th wheel hitch. My name's Kevin, thanks for watching.


Customer Reviews

Sidewinder Wedge for Curt E16 5th Wheel Trailer Hitches - C16991

Average Customer Rating:  4.6 out of 5 stars   (8 Customer Reviews)

Bolt this wedge onto your Sidewinder to prevent the Sidewinder's king pin from rotating in your Curt E16 fifth-wheel trailer hitch.

by:

I was having issues finding a locking wedge to use with my turning point pin box and a Hensley Mfg. hitch that was sitting in my 2019 GMC 2500HD. I called a spoke with Lauren A. and told her what I needed. She was able to find the part by dimensions and started the product my way. In less than 5 minutes I purchased the part and was off the phone. I appreciate the knowledge and your time.



by:

Your customer service answered my questions faster than
I thought possible! I ordered a C16991 wedge for a reese revolution
pin box and the C16515 curt head assembly to fit my curt R5
roller hitch. You shipped them and kept me informed and they
arrived very quickly. I installed the head assembly and wedge,
and now am waiting to see how they work when I get our camper in 2
weeks. Keep up the Great Customer Service!



by:

Product worked fine ...



by:

Product delivered undamaged and meets my expectations.



by:

Reasonably priced and decent shipping t ime.



by:



by:



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See what our Experts say about this CURT Accessories and Parts

  • Reese Fifth Wheel Sidewinder Kingpin for Grand Design Solitude and 2022 Ford F-350
    Your Grand Design Solitude will have a Lippert 1621 pin box, and since your trailer has a 16,600 lb GVWR, you'll need the 20k Goose Box, which is the following part number the Reese Goose Box 5th-Wheel-to-Gooseneck Air Ride Coupler Adapter # RP85FR. Since your 2022 Ford F-350 did not come with the OEM prep package you'd need a custom fit rail kit like the Curt # C79BR which will minimize drilling and install much quicker than universal options. You'd then need a fixed hitch like the Curt...
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  • Will 5th Wheel Hitch for 2017 Ram 2500 Prep Package 8 foot Bed Work with 6-1/2 foot Bed
    The footprint for the factory prep package on the 2017 Ram with a 6-1/2 foot or 8 foot bed is the same. The reason why we have the sliding 5th wheel hitches listed for the short bed version is because with a standard pin box (which most people have) you will want to use a sliding version to avoid hitting your cab with your trailer. The 8 foot bed doesn't have the same clearance issues hence the stationary 5th wheel hitch options. I believe that the pin box you are talking about is the...
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  • Compatibility of Anderson Ultimate 5th Wheel Connection w/ 2015 Toyota Tundra Crewmax
    The Andersen Ultimate Connection you referenced, part # AM3200 isn't meant to be used in trucks with beds shorter than 6 feet. The only safe way to tow a fifth wheel with your Crewmax would be to use a standard (non sliding) fifth wheel hitch and a Reese Sidewinder installed in place of your original pin box. If you don't already have bed rails in your truck, you can install them using part # C16304-200. The hitch you'll need will depend on the weight of your fifth wheel. The non-sliding...
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  • Recommended 5th Wheel Hitch and Sidewinder Pin Box for 2017 Titan XD Diesel 6.5 Bed
    For a 2017 Nissan Titan XD, we have the Curt E16 5th Wheel Trailer Hitch for Nissan Titan XD Towing Prep Package - Slide Bar Jaw - 16K # C16515-16026 which is a removable hitch. For use in a 6-1/2 Foot Bed, I recommend using a Sidewinder which will be pin box specific to your trailer to give you the turning clearance necessary. To use this hitch with a sidewinder, you'll also need Wedge # C16991 to keep the king pin from rotating inside the hitch.
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  • Which Hitch for 2021 Ram Factory Puck Mount is Compatible with a Sidewinder Pin Box
    I have a solution for you on this, but the Mopar hitch for the Ram OEM pucks is not compatible with a Sidewinder style pin box; it's really just a re-branded Curt Q20 head # C16530 so the spherical axial bearing that it has won't work with a rotating pin box. For this reason you'll need a hitch like the Curt E16 5th Wheel Trailer Hitch for Ram Towing Prep Package - Slide Bar Jaw - 16,000 lbs # C16515-16021. This is compatible with Sidewinders when used with Sidewinder Wedge # C16991.
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  • Can Curt A20 5th Wheel Head Unit Replace Curt Q20 Head Unit for Use With Sidewinder
    I reached out to Curt about this, and what they told me was that the Q20 and A20 use different legs with different mounting, so the Head Unit for Curt A20 5th Wheel Trailer Hitch # C16540 will not fit on the Q20 legs. Neither one will work with a Reese sidewinder, so you'll instead want to go with something like the Curt E16 5th Wheel Trailer Hitch - Slide Bar Jaw - 16,000 lbs # C16115 which fits standard 5th wheel rails like you should have. To use this with a rotating pin box, you'll...
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  • Compatibility of Curt 5th wheel LCI Turning Point Pin Box for 2018 Titan XD with Towing Prep Pkg
    The Curt A series of fifth wheel hitches are no longer compatible with Reese Sidewinders, so you'll instead want to go with a Curt E Series. For your 2018 Nissan Titan XD with the OEM prep package, the Curt E16 5th Wheel Trailer Hitch for Nissan Titan XD Towing Prep Package - Slide Bar Jaw - 16K # C16515-16026 will work well and fit right in. You'll also need a custom Sidewinder Wedge # C16991 to keep the king pin from rotating inside the hitch head.
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  • Custom 5th Wheel Install Kit Recommended for Use with Air Spring Suspension on 2019 Ford F-150
    I appreciate the time you've spent researching all the different products; I'm happy to offer you my expert recommendation to facilitate your purchasing decision. The Curt E16 5th Wheel Trailer Hitch - Slide Bar Jaw - 16,000 lbs # C16115 and the Reese 16K # RP30047 are very similar but I'm going to give the advantage to the Curt because of its autolocking jaw and excellent price point. The Reese Custom Installation Kit # RP50087-58 will pair up nicely with this hitch. To prevent your...
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  • Comparing Reese and Curt Sidewinder Wedges for Curt E16 5th Wheel Trailer Hitch
    The Reese custom wedge # 30861 is flared out at one end so it should fit and lock out the pivot at the E16 hitch better than the rectangular Curt wedge # C16991. But since both fit the same hitch you could go with either one. As long as the wedge you use successfully locks out the pivot at the hitch then it will work.
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  • Curt E16 Fifth Wheel Hitch that Fits 2021 Chevy Silverado 2500 OEM Rail Kit and Rotating Pin Box
    The correct Curt E16 5th Wheel Trailer Hitch for Chevy/GMC Towing Prep Package - Slide Bar Jaw - 16,000 lbs # C47FR which also will work great with a rotating/pivoting pin box like a Turning Point or a Sidewinder. You'll need to use custom wedge # C16991 to keep the king pin from rotating inside the hitch head.
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  • Fit of Curt E16 5th Wheel Hitch in OEM Tow Prep Pucks on 2020 GMC Sierra 2500
    The Curt E16 5th Wheel Trailer Hitch for Chevy/GMC Towing Prep Package - Slide Bar Jaw - 16,000 lbs # C47FR would work fine on your 2020 GMC Sierra 2500, assuming that your 5th wheel has the dished in front corners that would prevent the front of the 5th wheel from colliding with the rear of the cab during turns or if it has a rotating pin box like the Reese Sidewinder/Revolution or Lippert Turning Point. If you are using a a rotating pin box, you'll need the Curt E series specific wedge,...
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  • Wedge to Use with Curt A16 Fifth Wheel Hitch
    The Curt part number # C16520 is for an A16 head like the hitch # C16120 which is unfortunately not compatible with sidewinders. The old versions were compatible, but not the current style. That said, you'll want to go with the E-Series from Curt # C16115, which is compatible when used with a wedge like # C16991.
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  • Can Curt A16 Fifth Wheel Hitch be Used with Reese Revolution/Sidewindr Pin Box
    The Curt E16 5th Wheel Trailer Hitch for Nissan Titan XD Towing Prep Package - Slide Bar Jaw - 16K # C16515-16026 that you referenced will work with a Reese Revolution or Sidewinder pin box with the correct wedge, # C16991. The Sidewinders and Reese Revolution pin boxes are the exact same thing.
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  • Can Curt A16 5th Wheel Hitch be Used With Sidewinder Pin Box
    That's a good question because it can be confusing, but the Curt Q16 fifth wheel hitch technically no longer exists, as it was discontinued and replaced by the Curt A16 5th Wheel Trailer Hitch # C16120. The A16 hitch used to be compatible with a Sidewinder so long as you use the Sidewinder Wedge for Curt A Series 5th Wheel Trailer Hitches # C16992, but the old, discontinued Q16 was not (nor are the current Q-series of hitches) due to its head unit having an axial bearing system that created...
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  • Why Is The Curt Q20 5TH Wheel Hitch Not Compatible With a Rotating Pin Box?
    The Curt Q20 5th Wheel Trailer Hitch # C16530-16021 uses rubber stoppers which have proven to wear out prematurely and fail when used with a Reese Revolution or Sidewinder style rotating pin box. For this reason I recommend the Curt E16 5th Wheel Trailer Hitch for Ram Towing Prep Package - Slide Bar Jaw - 16,000 lbs # C16515-16021. This is a similar hitch but is compatible with sidewinders when used with a Sidewinder Wedge, like # C16991. This is a great setup for your 2022 Ram 2500 with...
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  • Can Andersen Ultimate be Used With Rotating Pin Box in 2017 Ram 2500 With Factory Pucks
    A fixed fifth wheel hitch is what you are going to need in order to tow your Grand Design with a rotating pin box, the Lippert Turning Point. Rotating pin boxes should not be used with any type of adapter to ensure stability and a solid connection, and not only is the Andersen Ultimate # AM3200 an adapter, but it attaches to standard base rails so you would need to use the Reese 5th Wheel Rail Adapter for Ram OEM 5th Wheel Towing Prep Package # RP30154 to mount it. Additionally, the use...
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  • Wedge for Curt E16 for Turning Point
    Though the Sidewinder Wedge for Curt E16 # C16991 is not made for a Lippert Turning Point, we have had customers successfully use the wedge with the Turning Point so it will work with your Curt E16 # C16115.
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  • Best 5th Wheel Hitch That Works With The Lippert Turning Point Pin Box
    There are a couple of options that'll work great with your Lippert Turning Point Pin Box, however one hitch stands out to me more than others. Take a look at the: -Curt E16 5th Wheel Trailer Hitch - Slide Bar Jaw - 16,000 lbs # C16115 This 5th wheel stands out the most from the others because of its fast, 1-pin head removal, which will allow for one person to remove the hitch. Finally, since you're going to use this hitch with your Turning Point pin box, you're also going to need the...
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  • Recommended Hitch for Trial 5th Wheel Towing Using 2017 Nissan Titan XD Long Bed w/OEM Tow Package
    I would go with the Curt E16 5th wheel hitch if your 5th wheel trial time will be fairly extensive. However, if you only plan on towing a few times then the Demco Recon is the way to go as it is a cost-effective option that will give you a good idea of what 5th wheel towing is like. For the Curt route, you'll need Curt E16 5th Wheel Trailer Hitch for Nissan Titan XD Towing Prep Package - Slide Bar Jaw - 16K # C16515-16026 which attaches to your 2017 Nissan Titan XD's OEM Prep Package....
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  • Recommended Reese 5th Airborne Air Ride Sidewinder to Replace Norco/BAL Pin Box
    The manufacturer of your current pin box tells me that the bolt pattern matches up with a Lippert 1621 pin box, so for an Air Ride Sidewinder that would provide the proper clearance between the front of your fifth wheel and the back of your truck cab, you'd want to use part # RP61422. The air ride Sidewinder would relocate the pivot point between the hitch and the king pin 22 inches rearward to the point where the pin box attaches to the underside of the trailer loft. The Sidewinder includes...
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    Image 1 for
  • Orientation of Wedge for Curt A16 and E16 Fifth Wheel Hitches on Sidewinder/Reese Revolution
    I attached a picture that shows how the E16 wedge part # C16991 and Q16 wedge part # C16992 install on a Sidewinder or Reese Revolution pin box.
    view full answer...
    Image 1 for
  • Recommendation for Custom Wedge to Fit Curt E16 Hitch and Lippert Turning Point Pin Box
    Your best option for using the needed wedge for your Curt E16 5th Wheel Trailer Hitch for Nissan Titan XD Towing Prep Package - Slide Bar Jaw - 16K # C16515-16026 and the Lippert Turning Point Pin Box is with the Custom Wedge # C16991. The Reese Sidewinder Pin Box, for which this wedge is designed, is extremely similar to the Lippert Turning Point model. So while these two items have not been officially tested together, I am confident this will work and will be your best solution. This...
    view full answer...
    Image 1 for
  • Recommended 5TH Wheel Hitch For 2022 Ram 2500 6-1/2 In Bed Prep/Puck System And Revolution Pin Box
    If your 32ft Rockwood 5th wheel with the pivoting Revolution pin box is the only 5th wheel you will be hauling you can use a fixed position hitch like the Curt E16 5th Wheel Trailer Hitch for Ram Towing Prep Package - Slide Bar Jaw - 16,000 lbs # C16515-16021 in your 2022 Ram 2500 6-1/2' bed with the factory prep/puck mounting points. You will need a Sidewinder Wedge # C16991 specific to the Curt E-series 5th wheel hitch to ensure it stays locked in position and only turns on the pin...
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  • Can a Sidewinder Pin Box be Used with a Curt E-16 5th Wheel Trailer Hitch
    Yes, the Curt E-16 5th wheel hitches such as # C16115 are compatible with Reese Sidewinder replacement pin boxes. If your E-16 hitch is a slider hitch then it will have to stay locked in the tow position at all times when using it with a Sidewinder like the # RP61412. The only thing I recommend to add is the custom wedge for Curt E-16 hitches # C16991. The custom wedge ensures the best fit between the Sidewinder and the hitch.
    view full answer...


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Info for this part was:

Employee Lindsey S
Written by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
Employee Adam R
Expert Research:
Adam R
Employee Jacob T
Video Edited:
Jacob T
Employee Chris R
Video by:
Chris R
Employee Thomas T
Video by:
Thomas T
Employee Wilson B
Updated by:
Wilson B
Employee Kristina F
Updated by:
Kristina F
Employee Isabelle B
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Isabelle B
Employee Robert C
Test Fit:
Robert C
Employee Kevin C
Installed by:
Kevin C

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