1. Gooseneck and Fifth Wheel Adapters
  2. Gen-Y Hitch
  3. Fifth Wheel Trailer to Gooseneck Hitch
  4. Bolts Over King Pin
  5. Adapts Trailer
  6. King Pin Adapters
Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Adapter Pin Box - Lippert 1621, 1621 HD - 18K

Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Adapter Pin Box - Lippert 1621, 1621 HD - 18K

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Gooseneck and Fifth Wheel Adapters
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Gen-Y Hitch Gooseneck and Fifth Wheel Adapters - 325-GH-8045
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This shock-absorbing pin box works with your truck's gooseneck hitch to provide a smooth ride while you tow your fifth-wheel trailer. The all-in-1 box is virtually maintenance-free - no air bags to refill or small parts to replace. Call 800-298-8924 to order Gen-Y Hitch gooseneck and fifth wheel adapters part number 325-GH-8045 or order online at etrailer.com. Free expert support on all Gen-Y Hitch products. Guaranteed Lowest Price and Fastest Shipping for Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Adapter Pin Box - Lippert 1621, 1621 HD - 18K. Gooseneck and Fifth Wheel Adapters reviews from real customers.
  • All Info
  • Reviews (3)
  • Q & A (25)
  • Photos
  • Why etrailer?

Gen-Y Hitch Gooseneck and Fifth Wheel Adapters

  • Fifth Wheel Trailer to Gooseneck Hitch
  • Bolts Over King Pin
  • Gen-Y Hitch
  • Adapts Trailer
  • King Pin Adapters
  • 18000 lbs GTW
  • Adjustable Height

This shock-absorbing pin box works with your truck's gooseneck hitch to provide a smooth ride while you tow your fifth-wheel trailer. The all-in-1 box is virtually maintenance-free - no air bags to refill or small parts to replace.


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
  • Pin weight scale is built in to help you balance your trailer
    • Meter lets you know if your load needs to be adjusted before you tow
  • 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: 18,000 lbs
  • Pin weight capacity: 3,500 lbs
  • Ball size: 2-5/16"
  • 5-Year limited warranty


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

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.


Easily Check Your Vertical Load

The vertical load, or pin weight, refers to the weight that a fully loaded trailer exerts downward on the hitch ball in the truck bed. Too little vertical load can cause trailer sway and too much can cause poor performance.


This Gen-Y pin box has a built-in mechanical scale so that you can check to see if your vertical load is too high or too low. The highest arrow on the scale indicates your maximum vertical load (3,500 lbs). The lowest arrow indicates no vertical load (0 lbs). A vertical load of at least 2,000 lbs is recommended for the built-in shock absorption to function effectively. This means that the scale's white indicator marker should be between the highest arrow and the middle arrow when you hook up your trailer to tow.



GH-8045 GenY Hitch Executive Fifth Wheel to Gooseneck Adapter Box with Torsion Shock Absorption - Lippert 1621 and Lippert 1621 HD - 18,000 lbs

Item # 325-GH-8045






Customer Reviews

Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Adapter Pin Box - Lippert 1621, 1621 HD - 18K - 325-GH-8045

Average Customer Rating:  4.7 out of 5 stars   (3 Customer Reviews)

This shock-absorbing pin box works with your truck's gooseneck hitch to provide a smooth ride while you tow your fifth-wheel trailer. The all-in-1 box is virtually maintenance-free - no air bags to refill or small parts to replace.

- 325-GH-8045
by:

Installation was very straight forward, it is heavy so you need something to prop it up for you while you get at least one bolt started in each side. I used the bucket on my tractor to hold it up. I only have one tow in so far for about 50 miles so still early to review. It certainly works as advertised for taking out a lot of the trailer feedback on rough roads, uneven transitions, etc. It is an improvement in ride quality and makes towing a big fifth wheel more comfortable. Necessary? Probably not but it does spoil you a little bit. One problem though that Gen-Y is working on fixing is the ball to pinbox is a little bit longer and I did hit the bed cap at about 60 deg of turn while backing in at an angle. It cleared when I tested it in the flat driveway, but not by much. They are going to come up with a fix. I'm at 7 1/2" clearance from the overhang to the bed caps sitting flat. This is with a '18 Chev Silverado HD 8' bed and a '19 Momentum 351M 769579



- 325-GH-8045
by:

Love this hitch great quality ! Easy to install as well! Makes pulling my camper much easier! 828956



- 325-GH-8045
by:

Great product and amazing customer service. The first hitch was delivered damaged but etrailer resolved the issue and my new I damaged hitch showed up 2 days later. 770444


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Ask the Experts about this Gen-Y Hitch Gooseneck and Fifth Wheel Adapters

  • Comparing Dimensions of Reese Goose Box and Gen-Y Adapter for Lippert 1621 & 1621 HD Pin Box
    The clearances are going to essentially be the same due to the dimensions of the Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Adapter Pin Box # 325-GH-8045 and Reese Goose Box 5th-Wheel-to-Gooseneck Air Ride Coupler Adapter # RP94720. As you can see by the dimensions from the first bolt hole to the middle of the coupler of each, both are going to give you just over 18 inches: 18.56 inches for the Goose Box and 18.86 inches for the Gen-Y. What this really comes down to, since...
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  • Would Gen-Y 325-GH-8045 Shock Absorbing 5th Wheel to Gooseneck Adapter Pin Box Damage 5th Wheel
    Due to the shock absorbing properties provided by the Gen-Y # 325-GH-8045 5th Wheel to Gooseneck Adapter Pin Box, it would be much less likely to cause damage than a rigid adapter. If you're concerned about damage, he best alternative is to avoid adapters all together and use a fifth wheel hitch but if that isn't feasible the Gen-Y adapter which is a compatible replacement for the Lippert 1621 pin box would be a good choice. A better option would be the Reese Goosebox that's compatible...
    view full answer...
  • How To Lock the Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Adapter Pin Box
    The correct lock we offer for the Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Adapter Pin Box part # 325-GH-8045 is the Gen-Y Auto Latch Gooseneck Coupler Lock part # GY89FR which is the only available option. The BOLT Trailer Coupler Lock won't work.
    view full answer...
  • Cushioned Fifth Wheel to Gooseneck Adapter for 2019 Forest River Cedar Creek Silverback 31LK
    The Gen-Y Hitch Torsion 5th Wheel to Gooseneck Adapter Pin Box # 325-GH-8045 does fit your 2019 Forest River Cedar Creek Silverback 31IK fifth wheel trailer and will help with chucking. The torsion spring setup of this will make a huge difference in smoothness when you are travelling as it does an excellent job reducing vertical and horizontal chucking. Another interesting claim that Gen-Y makes with this style of cushioning is that it increases fuel mileage too! You'll need to have...
    view full answer...
  • Pin Weight Capacity of Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Adapter Pin Box GH-8045
    I reached out to the manufacturer, Gen-Y, and verified that the pin weight capacity of the Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Adapter Pin Box # 325-GH-8045 is 3,500 lbs. This is the same adapter, which has an 18,000 lb capacity and is designed to replace Lippert 1621 and 1621 HD 5th-wheel pin boxes. I have added a link to a video review for you to check out as well of this part for you to take a look at. - Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Adapter...
    view full answer...
  • Gen Y Goose Neck Hitch For a Flat Bed Truck With a Recessed Ball
    The Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Adapter Pin Box - Lippert 1621, 1621 HD - 18K Item # 325-GH-8045 works on a flatbed truck with a recessed ball as long as the opening around the ball is large enough that the pin can be put in once connected. The goose neck end is 3-1/2" x 3-1/4" so as long as you have at least 5" of clearance around the ball you will be good.
    view full answer...
  • Is Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Adapter Secure on Gooseneck Ball
    That is a good question, so I reached out to Gen-Y about the Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Adapter Pin Box # 325-GH-8045 and was told it is completely secure and the lever cannot come undone. The reason is when it latches to the gooseneck hitch ball, the "coupler is locked with a pin, so in order for this to come undone the 5/8 inch pin would have to shear. This is no different then any traditional gooseneck trailer coupler connection." This adapter is designed...
    view full answer...
  • Does Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Adapter Pin Box # 325-GH-8045 Void Warranty
    Installing the Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Adapter Pin Box # 325-GH-8045 would not void the warranty of your camper. While some adapters for fifth wheel hitches do this style is different from them and would not. The ones that void warranties are the ones that attach to the pin box plate like the # CAB-C5G.
    view full answer...
  • How to Determine Fitment of Gen-Y Hitch Torsion 5th Wheel to Gooseneck Adapter Pin Box
    If the current pin box on your Potomac 5231 5th wheel trailer has a Lippert 1621 box number (or aftermarket equivalent) then the Gen-Y Hitch Torsion 5th Wheel to Gooseneck Adapter Pin Box # 325-GH-8045 will fit. If you aren't sure what you have then you can either find your pin box number on a sticker to the side of the pin box, or you can take some measurements of your pin box and compare them to the attached helpful article or let me know what you have and I can help you determine if...
    view full answer...
  • Can Gen-Y Hitch 5th Wheel to Gooseneck Adapter Pin Box Allow Short Bed Turning Clearance
    The short bed 2020 Ford F-250 Super Duties like yours are a bit longer than standard short beds as they are 6-3/4 feet long. So what that means is that if your trailer has a nose that tapers in at all the Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Adapter Pin Box # 325-GH-8045 will allow you turning clearance without cab interference. The height of your bed rails would not be an issue either.
    view full answer...
  • Will the Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Adapter Pin Box Work With a Short Bed
    The Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Adapter Pin Box part # 325-GH-8045 is an excellent option to replace an existing pin box as it allows for a clean truck bed and it would be much easier to couple. The built-in cushioning is also going to improve ride quality. In regards to clearance, this would be similar to that of a standard pin box and fixed 5th wheel hitch. That said, the turning radius will vary by trailer so you will need to measure to determine this. I doubt...
    view full answer...
  • Will the Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Adapter Work On a Short Bed Truck
    The Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Adapter Pin Box part # 325-GH-8045 is an excellent replacement pin box option that works to help smooth the ride and decrease wear/tear on both the trailer and tow vehicle. In regards to compatibility with a short bed truck, yes this is possible. That said, the amount of turning clearance you have once installed can be limited but how much will come down to the exact truck/trailer combo. In order to determine how much clearance...
    view full answer...
  • How To Get More Bed Clearance On A GMC Sierra 3500 When Using The Gen-Y Goose Neck Adapter
    I contacted Gen-Y and they said if your original pin box had 6 bolts on each side then you should use all 6 for the Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Adapter Pin Box - Lippert 1621, 1621 HD - 18K Item # 325-GH-8045. I have a couple things you can try if you are having clearance issues on your 2020 GMC Sierra 3500. If the nose of your trailer is not sitting high enough you can use the B&W Ball and Safety Chain Kit for Ford, GM, and Nissan Titan Underbed Gooseneck Trailer...
    view full answer...
  • Distance Forward From Ball Hole on Reese GooseBox
    The Goose Box # RP94716 has a distance of 7-1/2 inches from the center of it's ball hole to the front of the unit.
    view full answer...
  • How to Free up the Pin on the Gen-Y Shock Absorbing Fifth Wheel Pin Box
    Good question! I just did a video on the Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Adapter Pin Box part # 325-GH-8045 and had the same tight pin. To me it was coming from the thickness of the powder coating. I took a drill bit and slightly cleaned up the inside of the hole the pin slides in and it works like a charm now. So just take a bit, ream it out a touch and it will slide right in.
    view full answer...
  • Solution for Connecting RBW 7027 5th Wheel Pin Box to Gooseneck Ball in Truck
    I do have a potential solution for you, however I reached out to my contact at Gen-Y and found that the bolt pattern for the RBW 7027 wing brackets won't line up to what is on the Torsion 5th Wheel to Gooseneck Adapter Pin Box # 325-GH-8045. We do not have a replacement pin box available that will work to replace your existing RBW model, so your best option is going to be with an adapter like the Convert-A-Ball # CAB-C5G. This will bolt right onto the king pin itself (instead of replacing...
    view full answer...
  • Will the Shock Absorbing 5th Wheel to Gooseneck Adapter Pin Box Work With a Lippert 1116 Pin Box
    The Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Adapter Pin Box part # 325-GH-8045 can indeed be made compatible with a Lippert 1116 Pin Box. That said, the above adapter is 12" wide and your pin box is 12-1/2" wide so you need 1/4" spacers to fill the gap. There is an exact spacer for this job but we do not carry it so you will need to reach out to Gen-Y for this, the ¼" Filler Shims for EXECUTIVE 12.5" Wide part GH-8000.
    view full answer...
  • Can I Use the Gen-Y 5th Wheel to Gooseneck Adapter in a 2016 Nissan Titan xD
    As long as your 2016 Nissan Titan xD has a 2-5/16" gooseneck ball, the Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Adapter Pin Box # 325-GH-8045 will connect to the ball without issue. The Gen-Y # 325-GH-8045 is designed to replace Lippert 1621 and 1621HD pin boxes, so you will want to make sure that your current pin box is one of those models to ensure this will work as a replacement for that, as well. If your pin box does not have any identifying markers on it, such as a spec...
    view full answer...
  • Gen Y Gooseneck Adapter Pin Box -VS- Reese Gooseneck Air Ride Pin Box
    Either, the Reese # RP94720 5th Wheel to Gooseneck Air Ride, or the Gen Y # 325-GH-8045 Shock Absorbing 5th Wheel to Gooseneck Adapter Pin Box, will mount onto the side wings of your Dutchman trailer as all three utilize the 1621 pin box bolt pattern. I have included dimensional drawings for each of these pin boxes and you can see that they are nearly identical – so there will be no disadvantage in that respect. Neither of these pin boxes will touch the inside wall of the truck bed,...
    view full answer...
  • Recommended Gooseneck to 5th Wheel Pin Box Replacement for Lippert 1621 Pin Box
    I'll start off by saying that the Curt 4" Offset Ball for Double-Lock Gooseneck Hitch # C602 is designed for use with the Curt flip-over ball system, so you can use that to give yourself an extra 4" of clearance. When it comes to choosing a pin box, the Gen-Y # 325-GH-8045 and the Reese Goosebox # RP94720 provide a cushioned gooseneck coupler that will help reduce the jarring and chucking. I do think the Gen-Y # 325-GH-8045 is the best option and I really like that it comes with a pin...
    view full answer...
  • Is There a Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Adapter for Lippert 1116 Pin Box
    The Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Adapter Pin Box part # 325-GH-8045 can actually be made compatible with a Lippert 1116 Pin Box. That said, this pin is 12" wide and your pin box is 12-1/2" wide so you need 1/4" spacers to fill the gap. There is an exact spacer for this job but we do not carry it so you will need to reach out to Gen-Y for this, the ¼" Filler Shims for EXECUTIVE 12.5" Wide part GH-8000.
    view full answer...
  • Recommended Gooseneck Adapter for 1621 Pin Box
    Your 2012 Forest River XLR I believe has a 1621 pin box. You can confirm this by looking at the stickers on your current pin box or measuring the bolts as shown in the attached article. The Reese Goose Box Fifth-Wheel-to-Gooseneck Adapter # RP94720 is an air ride replacement rated for 20,000 lbs and would be my recommendation. Another option is the Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Adapter Pin Box # 325-GH-8045 rated for 18,000 lbs. If you end up not having the...
    view full answer...
  • Recommended 5th Wheel to Gooseneck Pin Box Adapter
    The first step would be to determine which OEM pin box the 5th wheel you're interested in uses. If the 5th wheel you purchase has a pin box that's compatible with the available Goosebox models, the Goosebox is still a great option, but if you have a Lippert 1621 or 1621HD, Gen Y now offers the Shock Absorbing 5th Wheel to Gooseneck Adapter Pin Box, part # 325-GH-8045. The pin box functions like a torsion axle, with no air bags or fittings that can leak and fewer moving parts. There's...
    view full answer...
  • Comparing Reese Goose Box and Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Adapter
    In regards to a Reese Goose Box 5th-Wheel-to-Gooseneck Air Ride Coupler Adapter like part # RP94720 and a Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Adapter Pin Box like part # 325-GH-8045, the main difference is that one uses air for cushioning and the other uses rubber. The benefit of air is that you can adjust the pressure for the desired ride quality and the benefit of rubber is that you don't have to worry about making any adjustments. Personally, I prefer the adjustability...
    view full answer...
  • Fifth Wheel Hitch For Round Ball Shank Goose Neck Underbed Hitch On A 2011 For F-250 Super Duty
    On your 2011 Ford F-250 Super Duty, there is not a drop in fifth wheel hitch that is compatible with the round shank. If you are wanting to use a fifth wheel hitch without drilling any more holes in your bed I recommend removing the old goose neck hitch that came with the truck and installing the Custom Underbed Installation Kit for B&W Companion 5th Wheel Trailer Hitches Item # BWGNRK1111-5W and using the B&W Companion 5th Wheel Trailer Hitch w/ Slider - Dual Jaw - 20,000 lbs Item # BWRVK3400-5W....
    view full answer...

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Info for this part was:

Expert Research:
Mike L
Expert Research:
Jameson C
Edited by:
Lindsey S
Installed by:
Jeff D
Installed by:
Randy B
Video Edited:
Jacob T
Written by:
Alexander C
Updated by:
Noah M
Video by:
Aidan B

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