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  1. 5th Wheel Gooseneck Adapter
  2. Gen-Y Hitch
  3. Fifth Wheel Trailer to Gooseneck Hitch
  4. Replaces King Pin
  5. King Pin Adapters
  6. 21000 lbs GTW
Gen-Y Hitch 5th Wheel to Gooseneck Pin Box - Auto Latch - Lippert 1621/1621 HD - 21K - 3.5K TW
Gen-Y Hitch

Gen-Y Hitch 5th Wheel to Gooseneck Pin Box - Auto Latch - Lippert 1621/1621 HD - 21K - 3.5K TW

Part Number: GY58GR
In Stock
$1,535.99
Retail:$2,005.32
You Save: $469.33
5th Wheel Gooseneck Adapter
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This shock-absorbing pin box works with your gooseneck hitch to give a smooth ride while you tow your fifth-wheel trailer. The all-in-1 box has no air bags to refill or small parts to replace. SnapLatch coupler allows for easy and secure hookup. 3.5K pi n weight. 1-800-940-8924 to order Gen-Y Hitch 5th wheel gooseneck adapter part number GY58GR or order online at etrailer.com. Free expert support on all Gen-Y Hitch products. Great prices and Fastest Shipping for Gen-Y Hitch 5th Wheel to Gooseneck Pin Box - Auto Latch - Lippert 1621/1621 HD - 21K - 3.5K TW. 5th Wheel Gooseneck Adapter reviews from real customers.
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  • Reviews (258)
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Gen-Y Hitch 5th Wheel Gooseneck Adapter - GY58GR

  • Fifth Wheel Trailer to Gooseneck Hitch
  • Replaces King Pin
  • King Pin Adapters
  • Gen-Y Hitch
  • 21000 lbs GTW
  • Adapts Trailer

This shock-absorbing pin box works with your gooseneck hitch to give a smooth ride while you tow your fifth-wheel trailer. The all-in-1 box has no air bags to refill or small parts to replace. SnapLatch coupler allows for easy and secure hookup. 3.5K pi n weight.


Features:

  • 5th-Wheel-to-gooseneck adapter box lets you tow your 5th-wheel trailer with your gooseneck hitch
    • 5th-Wheel pin box replaces the factory pin box on your trailer
    • Coupler attaches to your truck's gooseneck hitch ball
  • Shock-absorbing design ensures a smooth, steady ride
    • Technology functions like a torsion axle to limit transfer of road shock from trailer to truck and vice versa
      • Reduces chucking and rough fore-and-aft motion
      • Limits bounce and jarring up-and-down motion
    • No airbags to maintain and fewer moving parts to repair or replace than with other shock-absorbing solutions
  • Self-latching coupler automatically engages when hitch ball is in socket
    • SnapLatch pull rod allows you to easily uncouple from outside of your truck bed
  • Cross-shaped holes provide attachment points for safety chains
  • Heavy-duty steel construction
  • Powder coat finish resists wear and corrosion
  • Simple, bolt-on installation
    • Mounts with existing bolts
  • Made in the USA


Specs:

  • Designed to replace Lippert 1621 and 1621 HD 5th-wheel pin boxes
  • Towing capacity: 21,000 lbs
  • Pin weight capacity range: 1,500 lbs - 3,500 lbs
  • Ball size: 2-5/16"
  • 5-Year limited warranty


Notes:

  • In order for the pin box's shock absorption to work correctly, make sure your pin weight is within the pin weight range.
  • To calculate correct pin weight for Gen-Y hitches, use this formula: GVWR x 0.22
  • Because the Gen-Y Hitch Executive is shorter than the Lippert 1621 or 1621 HD pin box, the clearance between your trailer and tow vehicle during turns might be reduced.

Calculated Pin Weight Executive Pin Weight Capacity Required
1,600-2,599 lbs 3,500 lbs
2,600-3,599 lbs 4,500 lbs
3,600-4,599 lbs 5,500 lbs
4,600-5,599 lbs 6,500 lbs
5,600-6,599 lbs 7,500 lbs
6,600-7,599 lbs 8,500 lbs
7,600-8,599 lbs 9,500 lbs

Fifth Wheel to Gooseneck Adapter

Say your truck has a gooseneck hitch for towing your horse trailer, but you want to go camping with your new fifth wheel. You could outfit your truck with a new fifth-wheel hitch that attaches to your existing gooseneck hitch, but that means having to move a heavy, bulky hitch into and out of your truck bed all the time.


You could also purchase an adapter that bolts onto your trailer's existing pin box. But adding a new component to your setup can keep your pin box from working how it was designed. King pin adapters can create a stiff ride and can even strain your fifth wheel's frame by adding too much height at the connection point.


A better option is to use this gooseneck-compatible pin box to easily tow your fifth-wheel trailer with your truck's gooseneck hitch. The box replaces your trailer's existing pin box, which means it's designed to act as a part of your trailer instead of simply bolting over your king pin like an adapter does.


Built-In Shock Absorption for a Smooth Ride

Executive torsion with cable

If you've ever towed a fifth-wheel trailer before, you're no stranger to road shock. Driving over uneven terrain can result in a rigid, bumpy ride. And uncomfortable fore-and-aft chucking can occur when you're starting and stopping. When all of the motions combine, the road shock can even potentially damage your truck or trailer.


This Gen-Y Hitch torsion pin box is designed to absorb road shock at the connection point to create a safe, smooth ride. This is thanks to the internal construction of the box, which is similar to that of a torsion axle.


Pivot points are built into the Gen-Y pin box adapter. This allows for movement between the box, which attaches to your trailer, and the coupler tube, which connects to the gooseneck hitch ball in your truck bed. When your trailer bounces or jerks, the coupler tube will move accordingly.


torsion diagram

Built into the Gen-Y pin box are tubes with inner bars that are surrounded by rubber cords. As the coupler end moves, these inner bars twist inside of the tubes, attempting to follow the coupler's motion. But the rubber cords prevent the bars from twisting too far. And as each bar turns, these cords compress to absorb the rough shock. This means that any shock experienced by your truck can be absorbed before it reaches your trailer, and the shock experienced by your trailer won't get transferred to your truck.


Easy to Couple and Uncouple

auto latch and cable

The Gen-Y pin box adapter makes hooking up your trailer easy thanks to its automatic latch. When your hitch ball moves into the coupler tube, the latch instantly engages. No need to manually close the socket once the coupler is on the ball.


Disconnecting is fast and easy too. This normally requires that you crawl into your truck bed to access and release the latch. But the Gen-Y adapter box can be disconnected from outside of your truck bed. The included SnapLatch pull rod allows you to easy reach in and simply pull the latch to release the ball from the socket. No need to climb into your truck bed.



GH-8045AL GenY Hitch Executive Fifth-Wheel King Pin to Gooseneck Converter with Auto Latch Coupler - LCI 1621/1621 HD - 21,000 lbs





Customer Satisfaction Score:


Customer Reviews

Gen-Y Hitch 5th Wheel to Gooseneck Pin Box - Auto Latch - Lippert 1621/1621 HD - 21K - 3.5K TW - GY58GR

Average Customer Rating:  4.6 out of 5 stars   (258 Customer Reviews)

This shock-absorbing pin box works with your gooseneck hitch to give a smooth ride while you tow your fifth-wheel trailer. The all-in-1 box has no air bags to refill or small parts to replace. SnapLatch coupler allows for easy and secure hookup. 3.5K pi n weight.

by:

Shipping on this item was quick and packaged extremely well. The GenY hitch exceeded our expectations. We just completed a 600 mile trip. In the first 100 miles we noticed some stiffness, but after that it loosened up and on the return home we definitely noticed a difference. The hitch is very easy to hook up and as long as you are within a few inches the hitch will center itself and slide onto the ball. We towed with an F350 6 3/4 foot bed and I do not see any need for the 4 inch extension ball setup. A subcompact tractor makes 1 person install of the hitch a complete breeze. The angle is perfect. I ordered the GenY chains and mounting bolts and all worked very well.



by:

This hitch reduced chucking very well, I have a 2004 3500 Dodge Ram 4x4 Conestoga riding truck with very stiff suspension, the torsion action of the hitch definitely helps when crossing bridges and pot holes. The 5th wheel is an older Keystone Copper Canyon that is in great shape. I Have 12K miles with the new hitch.



by:

I love this hitch I put it on my 35’ Astoria fifth wheel it pulls great and the shock absorbers help with a smooth ride.we took a ten day trip from Ga to Maine last September and had no problems with this hitch. I guess the only negative is that it’s not as easy as a regular fifth wheel hitch to hook up by yourself but after a few times you can line it up ok. The best thing is that no big hitch taking up space in my truck bed just a ball



by:

Order arrived on time. Packaging looked almost perfect with one corner of the box slightly damaged. Two of us installed the hitch without too much of a problem. It is heavy. Used some WD40 on the inside of the mount. Balance it on the tailgate of the truck. One strong man plus an old guy was able to get it installed. I will update this once we have a couple thousand miles on it.



by:

This pull so much nocer than a 5th wheel hitch.



by:

All I can say is THANK YOU Tiffani S.! At first there was a mix-up and some issues with the order and re-applying a rebate that had expired, but finding Tiffani fixed everything. She was able to make things happen the way they should've from the beginning, and she got me all squared away. I have not installed the hitch yet, but things look like they should fit and are high quality.



by:

Just wanted to give you a heads up, hitch just arrived as promised. Packing could have been a bit more effective as it is apparent that its been dropped unfortunately it broke the finish in a couple places. I will address it and im not asking for anything as i know your not the shipper. Thanks



by:

Because of my bad back I replaced my B&W Companion hitch & Lippert Rota Flex hitch pin which I loved using. There is a learning curve with hitching a gooseneck trailer but with some reflective tape on the center line above the coupler on the gooseneck and a telescoping yellow ball hitching aid with a magnetic base on the truck bed just in front of the ball. This hitch setup is softer and smoother towing than my old setup and I have about 5k miles of use.



by:

Space saver, back saver, pulls great. The thing saves so much space in your bed, gives so much room while pulling. It saves your back because no more putting the giant heavy fifth wheel hitch in and out of the bed. It pulls great too, pulling my 42' would buy it again for any trailer. Much more solid that the adapters sold.



by:

The hitch itself works great! Easy to hook and unhook. The only downside to it, as with all gooseneck hitches, is getting into the bed to hook and unhook chains. Adding the hitch and airbags on my truck has defiantly smoothed the ride on the whoopy woops on the road.



by:

I pulled my redwood with an Andersen ball hitch and thought it was great. I just purchased a new Columbus 5er and installed a Gen Y. The Gen Y is unbelievably smoother, even considering my redwood had an air ride hitch. Installation was a snap with a little assist for lifting. The ride is solid and remarkably smooth. I should have bought the Gen Y years ago.



by:

Got here 2 days late, but that's OK. I wasn't ready to install it yet. Probably the kids at UPS couldn't lift it! HAHA. 135lbs. Looks good out of the box. My 5th wheel hitch won't fit the new truck prep so I decided to go this route. Now I have a Reese hitch and a Moryde pin box for sale. No pictures yet.



by:

Took less than 20 minutes to remove existing king pin box and install the gen y was pulling down the road in half hr part works as it should the only thing I would change is making a lock open on the cable pull cause yo need to stand between box and camper when hooking up



by:

This works absolutely perfect in a Ram 3500 with 6 1/2 ft bed, and the Gen Y gooseball hitch.
I think if more people knew of this combination, the fifth wheel style hitch, Anderson hitch and others would become obsolete.
Get to your destination, disconnect, pull out the ball, and the bed of your truck is free!



by:

Fit well and is a simple solution to towing with my lifted truck



by:

Quick, easy install. And this thing took the fifth wheel amazingly. My first trip was from Tulsa to Memphis. Most of the ride was 70 cruise control and there were quite a few times I saw the fifth wheel bouncing around in the back, but hardly felt it in the truck. I have a 2019 F350 DRW. The shipping was quick, I bought on a Sunday and had by Wednesday. The install was fairly easy with two people. Just don't forget to retorque the pin box bolts after a few hundred miles. No regrets purchasing this thing.



by:

Works great and I have my bed space back and not tied up with bulky fithwheel plates and rails. Trailer pulls great a lot quieter and reduced chucking.



by:

Haven't got to use the hitch yet but l am sure it will work fine.. Adam Y and the folks at etrailer are top notch. The only place to shop for truck, trailer and camper accessories.



by:

UPS would not deliver my coupler in a timely manner because they said one driver could not pick it up. I went 30 miles to the UPS distribution center and put it in the back of my truck. The coupler looks to be a nice piece... the shipping was sub standard.



by:

Very fast shipping and very solid built !!



by:

Super easy install, can't wait to test how the new hitch pulls this weekend.



by:



by:

Looks good



by:

Awesome customer service and on time



by:

I just got it I haven’t used it yet


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Show More Reviews

See what our Experts say about this Gen-Y Hitch 5th Wheel Gooseneck Adapter

  • Recommended 5th Wheel to Gooseneck Adapter for a 1621 Pin Box
    Thanks for the picture! That is exactly what I need to confirm what pin box your Forest River Shasta Phoenix 28RB has. I just spoke with my rep at Lippert and you have a 1621 pin box with an 18,000 lbs capacity. You will want the Gen-Y Hitch 5th Wheel to Gooseneck Pin Box item # GY58GR you were looking at. You will also need the Safety Chain with 2 Hooks item # GY49GR. These are designed specifically to work with Gen-Y pin boxes. They are legally required and do not come with the pin box. Please...
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  • Comparing Gen-Y 5TH Wheel To Gooseneck With 1621 Pin Box Lengths
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  • Gen-Y Shock Absorbing 5th Wheel to Gooseneck Pin Box Options For a 1621 Pin Box
    It would appear that you have a 1621 pin box. The best way to verify this is by measuring the bolt holes dimensions for the pin box to the trailer. This pin box has vertical holes spaced 2" on center and horizontal holes spaced 7-7/8" on center. If this is what you have you will need to find the tongue weight of your 5th wheel to ensure you get the correct Gen-Y Shock Absorbing 5th Wheel to Gooseneck Pin Box. 1,500-3,500LBS # GY58GR 2,000-4,500LBS # GY38FR 3,500-5,500LBS # GY66FR
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  • Dimensions For Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Pin Box # GY58GR
    Here is an image with the dimensions for the Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Pin Box # GY58GR. Do remember you will need the Safety Chain # GY49GR by switching to a hitch ball type connection.
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  • Gen-Y Hitch 5th Wheel to Gooseneck Pin Box For a 2020 Grand Design Solitude 310GK
    For your 2020 Grand Design Solitude 310GK you will need the Gen-Y Hitch 5th Wheel to Gooseneck Pin Box # GY58GR. This will bolt to the 1621 pin box bolt pattern you have on your Solitude. You will need the Safety Chain # GY49GR as all ball trailer connections are required to have safety chains.
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  • Recommended Gen Y Executive Pin Box
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  • Gen-Y Hitch 5th Wheel to Gooseneck Pin Box For a 2005 Keystone Raptor 3512 5TH Wheel Toy Hauler
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  • Replacement Pin Box For Switching To a Gooseneck Ball Connection On 5TH Wheel With Lippert 1621 18K
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  • What is the Difference Between the Gen-Y Pin Boxes 325-GH-8045 and GY58GR?
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  • Recommended Gooseneck Pin Box for a 2024 Keystone Cougar 5th Wheel Trailer
    Thanks for the pictures and information! I just heard back from my contact at Lippert and your 2024 Keystone Cougar has a 1621 pinbox. You will need the Gen-Y Hitch 5th Wheel to Gooseneck Pin Box item # GY58GR you were looking at. You will also need the Safety Chain with 2 Hooks for Gen-Y 5th Wheel to Gooseneck Pin Box item # GY49GR. Safety chains are required by law when towing with a gooseneck hitch and none of the 5th wheel to gooseneck pin boxes include them.
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  • Determining The Correct Gooseneck Pin Box For A 2018 Forest River Signature Ultra Lite RLF8299BS
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  • Correct Lock for Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Pin Box 21K Lippert 1621
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  • Solution for 5th Wheel to Gooseneck Adapter on 2020 Keystone Alpine 5th Wheel
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  • Recommended Coupler Lock for a Gen-Y Auto Latch Gooseneck Pin Box
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  • 5th Wheel to Gooseneck For 2022 Forest River Sabre Cobalt 5th Wheel With Lippert 1621 Pin Box
    Thanks so much for that info, and yes, because your 2022 Forest River Sabre Cobalt 36BHQ has a Lippert 1621 pin box, the Gen-Y Hitch 5th Wheel to Gooseneck is a fit. The correct part number is the following: - Gen-Y Hitch 5th Wheel to Gooseneck Pin Box # GY58GR Along with the pin box, the only other thing you need are safety chains, part # GY49GR.
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  • Will Gen-Y Hitch 5th Wheel to Gooseneck Pin Box Fit a 2023 Flagstaff Classic Ultralite 424BBS
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  • Will Gen-Y Fifth Wheel To Gooseneck Adapter that Fits Forest River Rogue Armored 5th Wheel
    From previous customers we have determined that the Forest River Rogue Armored fifth wheel trailers use the Lippert 1621 pin box which is what the Gen-Y 5th Wheel to Gooseneck Adapter part # GY58GR was designed to fit so this would fit and work really well.
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  • Which Gen-Y Cushioned Gooseneck Adapter Fits 2009 Coachmen Chapparal M-278
    Hey Mark, from previous customers we have determined that the your 2009 Coachmen Chapparal M-278 has a Lippert 1621 pin box so the Gen-Y Gooseneck adapter part # GY58GR would fit and work great on it. This will give you a cushioned gooseneck adapter.
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  • Gen-Y Shock Absorbing 5th Wheel to Gooseneck Pin Box for 2019 Keystone Montana 3121 RL Camper
    It appears that the 2019 Keystone Montana 3121RL came with with a 1116 or 1621 pin box. You will want to locate the label on the pin box for either of these two numbers or confirm the correct one by checking the spread of the mounting hardware. The Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Pin Box - Lippert 1116/1716 # GY43FR has mounting holes that are spread 8-3/4" horizontally and 2-1/2" vertically. The Gen-Y Hitch 5th Wheel to Gooseneck Pin Box - Auto Latch - Lippert 1621/1621...
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  • Recommended 5th Wheel to Gooseneck Pin Box for 2009 Keystone Cougar 316QBS
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  • Lock For Gen-Y Hitch Auto Latching 5th Wheel to Gooseneck Coupler
    What you'll actually need is a Gen-Y lock for your Gen-Y Hitch 5th Wheel to Gooseneck Pin Box - Auto Latch like parts # GY58GR. The correct fit is the following: - Gen-Y Auto Latch Gooseneck Coupler Lock # 325-GH-7111
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  • Replacement 5TH Wheel Pin Box to Convert to Goose Neck Ball on 2021 Crossroads Volante Camper
    It does appear that the Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Pin Box # GY58GR is the correct one for your 2021 CrossRoads Volante 310BH. To ensure that there will be no issues installing this I recommend contacting your dealer to ensure it has the 1621 pin box from the factory. Your Volante has a tongue weight of 1,644lbs dry so this fits into the 1,500-3,500lbs the hitch requires. With your 2018 Ram 3500 having the 8' bed you will not have any turning radius issues with...
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  • Is Offset Hitch Ball Needed For Gen-Y 5th Wheel to Gooseneck in Long Bed GMC Sierra 3500
    Hey Mark, Nope, your long bed GMC Sierra 3500 won't require the use of an offset gooseneck hitch ball with the Gen-Y Hitch 5th Wheel to Gooseneck Pin Box # GY58GR. With the gooseneck prep package you can use a standard hitch ball, the B&W Ball and Safety Chain Kit # BWGNXA2061. The only other thing you'll need with the Gen-Y pin box is the Safety Chain with 2 Hooks # GY49GR and you're set.
    view full answer...


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Info for this part was:

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