bing tracking image
  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. Adapts Trailer
Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Pin Box - Lippert 1621/1621HD - 30K GTW - 4.5K TW
Gen-Y Hitch

Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Pin Box - Lippert 1621/1621HD - 30K GTW - 4.5K TW

Part Number: GY38FR
In Stock
$1,725.97
Retail:$2,445.19
You Save: $719.22
5th Wheel Gooseneck Adapter
Add to cart
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

Customer Photos

Need help with installation?
Locate installers near me
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. Auto-latch allows for easy hookup. 4.5K pin weight. 1-800-940-8924 to order Gen-Y Hitch 5th wheel gooseneck adapter part number GY38FR or order online at etrailer.com. Free expert support on all Gen-Y Hitch products. Great prices and Fastest Shipping for Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Pin Box - Lippert 1621/1621HD - 30K GTW - 4.5K TW. 5th Wheel Gooseneck Adapter reviews from real customers.
  • All Info
  • Reviews (202)
  • Q & A (0)
  • Photos

Gen-Y Hitch 5th Wheel Gooseneck Adapter - GY38FR

  • Fifth Wheel Trailer to Gooseneck Hitch
  • Replaces King Pin
  • King Pin Adapters
  • Gen-Y Hitch
  • Adapts Trailer
  • Lippert 1621
  • Lippert 1621HD

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. Auto-latch allows for easy hookup. 4.5K pin 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 lever automatically engages when hitch ball is in socket
  • 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: 30,000 lbs
  • Pin weight capacity range: 2,500 lbs - 4,500 lbs
  • Ball size: 2-5/16"
  • 5-Year limited warranty


Notes:

  • Average break-in period for hitch = 1,000 miles.
  • 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.



GH-8055AL GenY Hitch Executive Fifth-Wheel King Pin to Gooseneck Converter with Auto Latch Coupler - LCI 1621/1621 HD - 30,000 lbs





Customer Satisfaction Score:


Customer Reviews

Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Pin Box - Lippert 1621/1621HD - 30K GTW - 4.5K TW - GY38FR

Average Customer Rating:  4.5 out of 5 stars   (202 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. Auto-latch allows for easy hookup. 4.5K pin weight.

by:



by:



by:



by:



by:



by:



by:



by:



by:



by:



by:



by: 09/21/2023



by:



by:



by:



by:



by:



by:



by:



by:



by:



by:



by:



by:



by:


25
201
Show More Reviews

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

  • Which Gen-Y Gooseneck Adapter Fits 2020 Keystone Raptor 424
    Hey David, from previous customers of ours who have the same 2020 Keystone Raptor 424 we have determined that your pin box style is the Lippert 1621 which means for a Gen-Y gooseneck adapter you'd want the # GY38FR that you referenced.
    view full answer...
  • Fifth Wheel to Gooseneck Adapter to Replace Lippert 1621 Pin Box
    Looks like you have a Rotoflex pin box and installed a Convert-A-Ball adapter part # CAB-C5G on it which isn't supposed to happen. The king pin plate flexes and causes the issue you have. If you can get me the pin box part numbers you see on it I can see what adapter solutions you have.
    view full answer...
    Image 1 for
  • How to Find Gen-Y Gooseneck Pin Box Adapter for a 2021 Grand Design Reflection 31MB
    Hey Brad, thanks for reaching out! What pin box number do you currently have installed on your 2021 Grand Design Reflection 31MB? You should find a sticker with a number like "1621" or even a serial number and the brand would work. Not all 5th wheel trailers come with the same pin box but once I have the info listed above I'll be able to help you find the correct Gen-Y gooseneck coupler. For example, the Gen-Y Hitch 5th Wheel to Gooseneck Pin Box # GY38FR will replace a 1621 or 1621HD...
    view full answer...
  • What Gooseneck Adapter Do I Need For A MORryde Cushioned Pin Box?
    Hello Greg. I do have a potential solution for you, but the Convert-A-Ball Cushioned 5th-Wheel-to-Gooseneck Adapter # CAB-C5G that you were looking at will not work for this purpose. Reason being that this kind of adapter is not compatible with a cushioned pin box. Your best option will be to replace your MORryde cushioned pin box with a goosebox like the Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Pin Box # GY38FR. Keep in mind that these gooseboxes are not universal. If you can...
    view full answer...
  • Gen-Y or Lippert Gooseneck Connect for a 2016 Grand Design Reflection318RST
    Hey Brett, The pin box on your 2016 Reflection is a 1621 rated at 15.5K according to my contact at Lippert. If we take that and the GVWR of your RV into account this means you need the Gen-Y Pin Box Adapter # GY38FR. I took a look at the Lippert Gooseneck Connect and it's just a basic version adapter while the Gen-Y has the integrated rubber torsion arms so you'll actually see more of a benefit using the Gen-Y and is why I recommend going that route. You just need to pick up a set of...
    view full answer...
  • Will I Have Turning Clearance Issues Using The Gen-Y Gooseneck Pin Box On Short Bed Silverado 2500?
    The best way to prevent any clearance issues with your 2022 KZ Durango Gold G356RLQ and your 2020 Chevrolet Silverado 2500 with 6-1/2' bed and factory puck system is by using the Demco Autoslide 5th Wheel Hitch # DM79GV. This hitch slides back and gives you up to 14" of additional clearance when performing a jackknife turn. The Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Pin Box # GY38FR measures 16.9" from front mounting holes to center of hitch ball. A regular 1621 pin box this...
    view full answer...
  • Correct Gen-Y Pin Bo Adapter for an Octane 5th Wheel with 16K GVWR
    Hey Dicke, thanks for reaching out! Yes, the correct weight-class of Gen-Y Adapter Pin Box for your 16K GVWR Octane is one that has the 4.5K pin weight. For your application you need the part # GY38FR. Since you're switching over to a gooseneck hookup you'll also need to pick up the Safety Chain Kit # GY49GR to keep your trailer safe and legal.
    view full answer...
  • Best Way To Connect 5th Wheel To Gooseneck Ball On Flatbed Truck
    Hello Bryan, thanks for reaching out. It sounds like you are wanting to hook your 5th wheel up to the gooseneck ball on your flatbed truck. Since your camper has the rota-flex, you will need to get a new pin box. I do not recommend jury rigging or welding anything since this is a huge safety risk. You would be risking not only your own safety but the safety of other motorists. The best option for you will be to go with a gooseneck pin box like the Gen-Y Hitch 5th Wheel to Gooseneck Pin...
    view full answer...
  • 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
    view full answer...
    Image 1 for
  • Can 2022 GMC 3500 Short Bed Tow 2021 Forest River Sierra 3330BH With Gen Y Gooseneck Adapter
    I looked up your 2021 Forrest River Sierra C Class 3330BH and since it has a tapered nose designed for short bed turning clearance and the short bed of your 2022 GMC Sierra 3500 is on the longer side you would be able to get away with a Gen-Y pin box to gooseneck adapter and offset ball and have plenty of turning clearance. So what you would need is the # GY98GR for the adapter since you have a Rhino box and for the offset ball part # GY43XR and you'd be set. No more heavy fifth wheel...
    view full answer...
  • Will 2024 GMC Sierra 3500 Short Bed Work With Gen-Y Hitch 5th Wheel to Gooseneck Pin Box
    Since you're talking about an offset ball and don't want a slider it sounds like you have the 2024 Sierra 3500 short bed. Even with the offset you aren't going to be able to make a full 90 degree turn. I'm also not sure what your truck setup is like. Assuming you have the prep package you could use a 5" offset ball with the Gen-Y # GY55XR to get the best clearance. To truly find how much clearance you will have you can use the formula below: (A + B) - C = Clearance A = Distance from center...
    view full answer...
  • Will The Gen-Y Hitch 5th Wheel to Gooseneck Pin Box Help With Clearance Issues on Short Bed Ram 3500
    The Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Pin Box # GY38FR is not going to allow for any additional turning clearance than the 5th wheel king pin with a fixed point hitch. We have offset gooseneck ball options depending on what type of hitch you have. If your 2020 Ram 3500 has the factory puck system we do have the GEN-Y # GY83XR which will give you a 5" offset. If you have an aftermarket hitch like the B&W # BWGNRK1320 they do offer a 4" Offset Ball # BWGNXA4085 for additional...
    view full answer...
  • Replacement Pin Box For Switching To a Gooseneck Ball Connection On 5TH Wheel With Lippert 1621 18K
    The Reese Goose Box 5th-Wheel-to-Gooseneck Air Ride Coupler Adapter # RP85FR is going to be your best option as the Gen-Y pin boxes you found are not yet certified by Lippert to not void their frame warranty. You will need the Safety Chain Kit # RP49151 since you are switching to a ball connection. If you prefer to go with the Gen-Y and are not worried about the warranty then you will need to find the tongue weight of your trailer. The Gen-Y Hitch # GY58GR which is rated for a tongue...
    view full answer...
  • Gen-Y 5TH Wheel To Gooseneck Pin Box For a 2023 Grand Design Solitude 382WB
    Based on the information I can find I see the 2023 Grand Design Solitude 382WD comes with a MORryde Pin Box # MR83QR which has the Lippert Rhino bolt pattern. That would require the Gen-Y Hitch 5th Wheel to Gooseneck Pin Box # GY98GR. You can verify this by measuring the mounting pattern which should have the bolt holes spread 7-1/2" on center horizontally and 2" vertically. If you have a different measurement please let me know. The Gen-Y will only void your warranty if the dealer/Lippert...
    view full answer...
  • Correct Gen-Y Hitch 5th Wheel to Gooseneck Pin Box for 2023 Heartland BigHorn 3970RL
    The pin box on your 2023 Heartland BigHorn 3970RL is a Lippert 1621. The Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Pin Box # GY38FR will fit the bolt pattern but I'm not 100% sure it is the correct capacity. You need to make sure your tongue weight falls within the range of the system. Gen-Y uses the formula GVWR x 0.22 = Tongue Weight for pin box selection. I wasn't able to find the GVWR for your particular 5th wheel so you will have to figure out which hitch is the correct...
    view full answer...
  • Weights of Reese Goose Box, Curt Q25 5th Wheel Hitch, and Gen-Y Fifth Wheel Pin Box/Adapter
    The Gen-Y Hitch Shock Absorbing 5th Wheel Pin Box # GY68GR weighs 155 lbs. The Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Pin Box # GY38FR weighs 162 lbs. Reese Goose Box 5th-Wheel-to-Gooseneck Air Ride Coupler Adapter # RP85FR weighs 195 lbs. The Curt Q25 5th Wheel Trailer Hitch for Chevy/GMC Towing Prep Package # C97FR weighs 159 lbs.
    view full answer...
  • Determining Which Gen-Y 5th Wheel To Gooseneck Pin Box Fits Keystone Montana
    I would be happy to help you determine which Gen-Y Hitch Shock Absorbing 5th Wheel To Gooseneck Pin Box will be correct for your Keystone Montana 5th wheel trailer, but you will first need to determine which pin box is installed on your trailer. To do this you will need to look on the pin box for a four digit model number such as 1116 or 1621. If you cannot find the model then just send me a picture of the sticker on the pin box that has the serial number and item number so I can identify...
    view full answer...
  • Which Gen-Y 5th Wheel to Gooseneck Pin Box Fits Alliance Valor 31A10
    In order to find the correct Gen-Y 5th Wheel to Gooseneck Pin Box you will need to identify the current pin box on your Alliance Valor 31A10. You will also need to find the correct towing weight using the formula GVWR x 0.22 = TW. Check your pin box to see if it has a sticker with the pin box number or part number on it. If the pin box number isn't listed directly, the other information can be used by the pin box manufacturer to identify it. If you don't have a sticker, you could call...
    view full answer...
    Image 1 for
  • How Can I Determine Turning Clearance With A 5th Wheel When Using Gen-Y Offset Ball?
    Hello Eli. The correct Gen-Y offset gooseneck ball for your 2019 GMC 2500 short bed is part # GY23XR. It has a 5" offset. You can use the following formula to determine your turning clearance. (A + B) - C = Clearance A = Distance from the fifth wheel jaw center (or gooseneck ball) to the truck cab B = Offset used (5" in you case) C = Width of the nose of the trailer divided by 2 As far as the gooseneck pin box (or goosebox as we call it), the # GY38FR you were looking at is designed...
    view full answer...
  • Does the Gen-Y 5th Wheel to Gooseneck Pin Box Come With Mounting Hardware
    With the Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Pin Box # GY38FR being a replacement pin box it's not going to come with the mounting hardware, you'd be expected to reuse the original hardware.
    view full answer...
  • Recommended B&W Offset Ball for a 2017 Sierra 3500 Using a Gen-Y Gooseneck Pin Box
    No, the Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Pin Box item # GY38FR is not going to do anything to help with turning clearance. I do have a solution though. Since your 2017 GMC Sierra 3500 has the B&W item # BWGNRK1016 you can use the 4" Offset Ball item # BWGNXA4085 to get some extra turning clearance.
    view full answer...
  • Can You Tow 5th Wheel Trailer w/ Gen-Y Gooseneck Pin Box with 2015 Ford F-350 Short Bed?
    That's really going to depend on your specific trailer. While the standard response from the industry is that if you have a short bed truck that you need a sliding 5th wheel hitch, that just isn't always the case. A lot of trailers are now coming with a tapered nose to allow short bed trucks to tow them without needing a bulky slider hitch, and plenty of our customers have had no problems using pin boxes such as the Gen Y Gooseneck Pin Box # GY38FR with a short bed and no problems. With...
    view full answer...
  • Recommended Gooseneck Pin Box To Replace Lippert 1621 On 5th Wheel Trailer
    Thank you for the picture! I reached out to my contact at Lippert and based on the serial number you provided I was able to confirm that your trailer has a 1621 pin box with an 18000lb rating. For a gooseneck pin box that will fit you will need either the Reese Goose Box - 20000lb # RP85FR or the Gen-Y 25000lb # GY38FR. Between these two options I recommend the Gen-Y # GY38FR due to it having a built in shock absorber feature that will give you a smoother ride, but also due to it having...
    view full answer...
    Image 1 for
  • Gen-Y Shock Absorbing 5TH Wheel to Gooseneck Pin Box For 2014 Heartland Bighorn
    You will want to verify the pin box on your 2014 Heartland Bighorn as well as the tongue weight on your pin box. Based on information from others I see the 1621 pin box is the most commonly used on the 2014 Bighorn. You can verify this if your pin box still has the manufacturer decal with size on the front, or by measuring the bolt pattern. A 1621 pin box has bolt holes spread 2" vertically and 7-7/8" front to back. If you have this you will want a Gen-Y Hitch Shock Absorbing 5th Wheel...
    view full answer...


< Previous
12



Do you have a question about this 5th Wheel Gooseneck Adapter?


Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
Employee Kathleen M
Updated by:
Kathleen M
Employee Wilson B
Updated by:
Wilson B
Employee Mike S
Updated by:
Mike S
Employee Michael B
Updated by:
Michael B
Employee Chris R
Video Edited:
Chris R
Employee John S
Video Edited:
John S
Employee Alexander C
Written by:
Alexander C
Employee Clayton O
Test Fit:
Clayton O
Employee Andy C
Installed by:
Andy C

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.