5th Airborne Premium Fifth Wheel Air Ride Coupler - 21,000 lbs Capacity

5th Airborne Premium Fifth Wheel Air Ride Coupler - 21,000 lbs Capacity

Item # 5AB-E1621-610

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Fifth Wheel King Pin

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Reese Fifth Wheel King Pin - 5AB-E1621-610
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Product Images

In Use/Installed

Customer Photos


  • 665
  • 1621
  • 1621HD
  • 665
  • Fabex
  • Lippert
  • M and M
  • Reduces Bounce and Jarring
  • 21000 lbs GTW
  • Reese
  • Pin Box Upgrade
  • Cushioned
  • Fixed Turret
The 5th Airborne premium fifth wheel air-ride coupler acts as a buffer between the tow vehicle and the trailer, minimizing the abuse sustained from turbulence on the road and giving you the smoothest rid possible by reducing shock. Call 800-298-8924 to order Reese fifth wheel king pin part number 5AB-E1621-610 or order online at etrailer.com. Free expert support on all Reese products. Guaranteed Lowest Price and Fastest Shipping for 5th Airborne Premium Fifth Wheel Air Ride Coupler - 21,000 lbs Capacity. Fifth Wheel King Pin reviews from real customers.


  • All Info
  • Reviews (21)
  • Q & A (136)
  • Videos (3)
  • Photos
  • Why etrailer?

Reese Fifth Wheel King Pin - 5AB-E1621-610

The 5th Airborne premium fifth wheel air-ride coupler acts as a buffer between the tow vehicle and the trailer, minimizing the abuse sustained from turbulence on the road and giving you the smoothest rid possible by reducing shock.


Features:

  • Pre-assembled for quick and easy installation
  • Bolts onto trailer using existing holes and hardware
  • Cushions shock with adjustable air spring and shock absorber
    • Reduces longitudinal shock chucking by nearly 60%
    • Decreases vertical shock by 44%
    • Relieves stress on coach frame
    • Reduces vibration inside coach and protects contents
    • Smoother ride means less fatigue for driver and passengers
  • Air spring is enclosed within the coupler for protection against the elements
  • Streamlined, aerodynamic design


Specs:

  • Capacity: 21,000 lbs
  • CSA approved
  • Designed for use with the following pin boxes
    • Fabex (665)
    • Lippert (1621 and 1621HD)
    • M&M (665)




5th Airborne Premium Fifth Wheel Air-Ride Coupler:

  • 1. Rear Mounted, heavy-duty shock absorber
  • 2. Enclosed air spring also absorbs shock
  • 2. King pin - connects to the fifth wheel trailer hitch in the truck bed
  • 4. Pivot point - allows king pin to move up and down


Note: It is recommended that if sitting idle for more than a week, the air springs be drained to relieve pressure on the system.



5AB-E1621-610 - 5th Airborne Premium Fifth Wheel Coupler - Extended 12" Wide Air Ride



5AB-E1621-610 Installation InstructionsInstallation Details 5AB-E1621-610 Installation instructions

This Product Fits The Following Vehicles

2019 - 2019 Forest River Sabre Fifth Wheel 36BHQ

2016 - 2016 Jayco Pinnacle Fifth Wheel 36KPTS Luxury



California residents: click here


Video of 5th Airborne Premium Fifth Wheel Air Ride Coupler - 21,000 lbs Capacity


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




Video Transcript for Fifth Gear 5th Airborne Premium Fifth Wheel Air Ride Coupler Installation

Today on our fifth wheel trailer we'll be installing the fifth airborne premium fifth wheel air ride coupler part number 5AB-E1621-610. Let's go ahead and show you how to operate the new air ride control on the fifth airborne coupler. We'll simply remove the plastic cap and apply air or pressure to the Schrader valve. This will blow up the bag and push down on the bottom plate of the coupler showing the line necessary to fill your airbag up to. Now, this will vary by vehicle and trailer but the line indicator here is a good starting point. Now, first, before we can install the new king pin, I'll need to remove the old or manufactured.

On this application, we'll need to remove the plastic cover around it first. There are a total of four fasteners to be removed. We'll remove the four fasteners and set the fasteners in plastic aside. We'll also remove or relocate any wiring that will be in the way, removing and reinstalling the pin box. In this application, we'll need to relocate and resecure the breakaway switch. We're removing now and then resecure it to the pin box once it's installed.

There's also wiring behind the pin box. To make it easier to access the hardware, we're going to go ahead and remove it also. Now, with all the wiring out of the way, we're ready to go ahead and start removing the manufacture's hardware. There are a total of five fasteners on each side. We'll remove six of the fasteners, three on each side completely and loosen four vaults. The two top ones on each side.

We'll leave in until we can support the weight of the pin box. Now, with all the fasteners removed or loosened, it will be necessary to get an extra set of hands or in this case we're going to be using a pallet and fork truck to help support the weight of the pin box. Once we bring it up under the pin box, we can then go ahead and remove the fasteners. Then, we'll pry or pull the old pin box down and out of the trailer brackets. Now, with our old one out of the way, we're ready to go and start installing a new one.

Once again, we'll use the fork truck to lift it up into position and get it close and then we'll move it around with an extra set of hands to install the hardware. We'll be reusing all the old or manufactures hardware to secure the new pin box. Once we have the hardware in place, we'll go ahead and tighten it down. Then, we'll work into specifications as indicated instructions. Now, with the pin box secured into our specifications, we'll go ahead and reinstall the wiring at the back of the coupler. Then, the new break switch using a self tapping screw, we're going to secure it here into the top of the new pin box. It will be out of the way to the coupler and the airbag in control. There you have it for the fifth airborne premium fifth wheel air ride coupler part number 5AB-E1621-610 on our fifth wheel trailer. .


Customer Reviews

5th Airborne Premium Fifth Wheel Air Ride Coupler - 21,000 lbs Capacity - 5AB-E1621-610

Average Customer Rating:  4.7 out of 5 stars   (21 Customer Reviews)

The 5th Airborne premium fifth wheel air-ride coupler acts as a buffer between the tow vehicle and the trailer, minimizing the abuse sustained from turbulence on the road and giving you the smoothest rid possible by reducing shock.

- 5AB-E1621-610
by:

Awesome Pinbox , bolt on as advertised , in retrospect an additional pair of hands would be helpful but I was able to install it by myself. The towing experience is a major improvement over a fixed pinbox 642372



- 5AB-E1621-610
by:

After owning this product for a year I am very satisfied with it. 432446



- 5AB-E1621-610
by:

Well made and like the idea of the airbag being on the inside out of the elements. 159614



- 5AB-E1621-610
by:

Service and delivery were excellent as was the price. In the process of installing. Waiting for two more strong arms. 23569



- 5AB-E1621-610
by:

The lady who helped me on the phone knew her products. The product shipped right away and was delivered in three days. It was delivered in good shape. it only took a couple of hours to install. That included messing around. There was two of us because of the weight and we were both senior citizens. Really appreciated the ease of installing. I purchased the product because of the jolt caused by the cracks in the cement when pulling my 5th wheel. Customer service was excellent 81804



- 5AB-E1621-610
by:

Fit great, no problems installing it other than I had to get a little creative to get in the right position to bolt it in. You can see the Marine Corps training work, improvise, overcome and adapt. 135374



- 5AB-E1621-610
by:
Honda Pilot

Unit arrived in good condition. Was a breeze to install, about a 1 hour job with 2 people including removal of old Tri-Glide. Didn't like the "banging" back and forth with the tri-glide. The only issue I had was having to drill pilot hole for breakaway switch screw. Non issue! Can't wait to make a haul with it. Alaska here we come! 375578


Comments

We put over 9000 miles on our new setup. The difference in the ride was amazing! Wouldnt have any other setup. I did add airbags to the truck as well. At times we had to look back to see if the trailer was still there. Its a 40 ft. toy hauler towed with a F350 dually, 6.7 powerstroke.

ROY J - 05/03/2018

38057

- 5AB-E1621-610
by:

E-trailer knew their product, shipped in quick order, fair price, satisfied with product. Would definitely do business with this company again!!!!! 218078



- 5AB-E1621-610
by:

Dana at etrailer was the best, order shipped same day and I received it within two days. Installation of the 5th Airborne was very easy and a well built product. 192999



- 5AB-E1621-610
by:
2010 Cyclone 3612

The 5th Airborne Air Ride Coupler is very well made with quality welds. Installing on a 2010 Cyclone 3612 Toy Hauler, I did have to cut about 1/2 inch from the fiberglass at the top front of the Lippert Trailer Mount. This modification provided the 3/8" vertical movement required to allow the front 3 bolt holes to line up. Other than the small fiberglass trim, a very clean installation. 193795



- 5AB-E1621-610
by:

Excellent product, well packaged, promptly shipped!! Thank you etrailer! 669146



- 5AB-E1621-610
by:

I contacted etrailer several times trying to figure out how to fix my problem. Everyone there that I spoke with was very knowledgeable and helpful. They shipped the product right away and I received it a day before expected. I can't say enough about the great people at etrailer. I would definitely recommend them to anyone looking for trailer parts. 662114



- 5AB-E1621-610
by:

Very easy to install and made a big difference in the ride 615530



- 5AB-E1621-610
by:
2018 Heartland RV Big Country Fifth Wheel

Arrived as scheduled. Set up on new 5ver was easy with extra hands. Great doing business 607055



- 5AB-E1621-610
by:

Great product.. Quick shipping and easy install... 605700



- 5AB-E1621-610
by:

Thank you for such prompt service, it was ordered the afternoon of 11/2/17 and delivered on 11/6/17. I'll be installing the 5th AIRBORNE Pin Box this coming weekend. Thank you so much Shawn, Definitely a FIVE STAR SERVICE !! Thanks again, Neil Barney 449881



- 5AB-E1621-610
by:

WOrks as stated in product info 388888



- 5AB-E1621-610
by:

after 3 hours i lose all the air in my airbag. Not happy 145453



- 5AB-E1621-610
by:

Very happy with 5th Airborne pin box. Experience W/ Etrailer was very good. Would order from them again. 83755



- 5AB-E1621-610
by:

I received my order Friday and already installed it on my Trailer Everything went very good 40298



- 5AB-E1621-610
by:

Product was shipped extremely quick Product mounted with no modification needed eTrailer.com excellent service 10599


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Ask the Experts about this Reese Fifth Wheel King Pin

Do you have a question about this Fifth Wheel King Pin?


  • Recommendation for Reese Goose Box With Too Little Height Clearance on 2017 Ford F-250 4x4
  • The Reese Goose Box 5th-Wheel-to-Gooseneck Air Ride Coupler Adapter # RP94720 may not be the best fit. If you have already adjusted the air and the position of the connection, then it is not ideal as you really do want the 7 inches for proper turning clearance on an incline. You can gain 1 inch by using the High-Rise Ball # BWGNXA2050, but it sounds like you need a different option than the Goose Box for your 2017 Ford F-250 4x4. If you want to send a photo to confirm proper installation,...
    view full answer...

  • Fifth Airborne Pin Box Replacement for 43 Dutchmen Voltage Toy Hauler
  • Since your serial number start with 028 you have a Lippert 1621HD pin box. Since your trailer weighs 21k you'd need then the 21k 5th Airborne for the 1621HD pin box replacement part # 5AB-E1621-610. I attached an install video for this pin box for you to check out as well.
    view full answer...

  • Air Ride Pin Box and Locking Plate for Lippert 1621 Pin Box and HiJacker 5th Wheel Hitch
  • To replace your Lippert 1621 pin box I recommend the 5th Airborne pin box # 5AB-E1621-610. There aren't a lot of options for locking plates for the various air ride pin boxes so this is your best option. The locking plate you would use with it and your Hijacker is # DM6062.
    view full answer...

  • Cushioned Pin Box that Can Fit 2000 Forest River Cardinal with Fabex 665/663 Style Pin Box
  • Cushioned pin boxes aren't exactly super cheap, but the best priced option that would fit your fifth wheel that has either a Fabex 665 or 663 is going to be the 5th Airborne part # 5AB-E1621-610 which has an air bag and shock system in it that will cushion the ride.
    view full answer...

  • Upgraded Air Ride Pin Box Needed for a Lippert 1621HD Pin Box
  • I do have a pin box upgrade for you, but unfortunately we do not have a Trailair Air Ride that is a correct replacement for your Lippert 1621HD. The 1621 and 1621HD have similar bolt hole pattern, but the HD has an extra bolt hole. This means that you can use an HD pin box for a 1621 application, but if you have an HD pin box that extra bolt hole needs to be used so the regular 1621 pin boxes are not compatible. The upgrade that we have is the Reese 5th Airborne Premium Air Ride Coupler...
    view full answer...

  • Air Ride Pin Box to Replace a Lippert 1621HD Pin Box on Cedar Creek Silverback 5th Wheel
  • The 1621HD is the number that I need. That means it is a Lippert 1621HD pin box. Since you will want to make sure to get a match for the 1621HD and not just the 1621 the one option is a 5th Airborne pin box, # 5AB-E1621-610. It also has an air bag and a shock inside, it is just designed differently than the Trailair models. I have linked a video showing installation for you.
    view full answer...

  • Air Ride Pin Box for a 2010 Heartland Cyclone 5th Wheel Trailer with Lippert 1621HD Pin Box
  • I spoke with my contact at Lippert and we identified the pin box on your 5th wheel trailer as a 1621HD. For just an air ride pin box you can use # 5AB-E1621-610 rated for 21,000 pounds. For an air ride pin box and Sidewinder combo rated for 16,000 pounds use # RP61422. Sidewinders are used on trucks with beds shorter than 6 feet. The Trailair pin boxes fit the 1621 pin box but are not a fit for the 1621HD pin boxes.
    view full answer...

  • Recommended Demco Hijacker Locking Plate for 5th Airborne Pin Boxes
  • The 5th Airborne Premium Fifth Wheel Air Ride Coupler - 21,000 lbs Capacity # 5AB-E1621-610 is a replacement pin box for the Lippert 1621, 1621HD, Fabex 665, and M&M 665. All of these pin boxes are grouped as "extended" pin boxes because they have an angled pin box reaching toward the vehicle. Conventional pin boxes have little or no angle. Extended does not mean they always extend past the 5th wheel trailer but rather they have a king pin that extends out from the mounting brackets. I...
    view full answer...

  • Air Ride Pin Box for an 18,000 Pound 5th Wheel Trailer with Lippert 1621HD Pin Box
  • For an air ride pin box that will fit in place of your 18K rated Lippert 1621HD pin box you have a couple of options. You can use the 5th Airborne unit # 5AB-E1621-610. I have linked a video showing an example installation for you. You could also use the 21K rated FlexAir pin box, # LC328492. Both of the above pin boxes feature both an air bag and a shock to reduce chucking and provide an overall better towing experience. But if I was choosing one I would go with the new FlexAir....
    view full answer...

  • How to Select Replacement Cushioned Pin Box for Grand Design Momentum M349 5th Wheel Trailer
  • I checked the Grand Design website for details on the pin box installed on your Momentum M349 but they do not include that detail in their specs. Usually you'll find the pin box part number on the box's driver's side sticker. This is needed to select an appropriate replacement cushioned pin box that will bolt right up in place of the OEM model. You can use the linked page to select that OEM part to then see the compatible cushioned pin boxes, and cushioned pin boxes that also include...
    view full answer...

  • Recommended 5th Wheel Towing Setup for a 2016 Ram 2500 with RamBox
  • I can tell you have really done your research. The RamBox is a great idea but it does require the use of a Sidewinder due to the limited side-to-side clearance of the bed rails on your 2016 Ram 2500. For a replacement Sidewinder for your Lippert 1621HD pin box the Sidewinder # RP61420 is the correct replacement provided that the weight capacity of your trailer does not exceed 16,000 lbs. If it does then you will need to go with part # RP61421 which has a 19,000 lbs capacity. If you...
    view full answer...

  • Comparison Of Trailair vs Flexair 18000-lb 5th Wheel Pin Box
  • Let me start by stating the first step to finding the best option for your situation is to know your particular pin box style/number. The pin box number will be listed on a sticker on the pin box or stamped on the king pin. For example, if you have a Lippert 0719 pin box on your trailer then the Trailair Air Ride, Item # LC179879, and the Trailiar Flex Air, Item # LC328484, would be good options. Both look very similar but the Flex Air has a few upgrades that the Air Ride does not....
    view full answer...

  • Replacement Upgraded Pin Boxes for a Lippert 1621 Pin Box
  • Trailair Flex Air 5th Wheel Pin Box # LC328484 is actually not the correct model to replace the Lippert 1621 pin box. Instead it fits the Lippert 0719 pin box so it will not work with your trailer. For your 1621 pin box there are more options: # LC328492 rated for 18,000 pounds # 5AB-E1621-610 rated for 21,000 pounds # 5AB-E1621-16K rated for 16,000 pounds # LC158778 rated for 21,000 pounds # LC328330 rated for 18,000 pounds # LC328329 rated for 21,000 pounds The TrailAir and...
    view full answer...

  • Comparing Lippert TrailAir and Reese 5th Airborne Replacement Pin Boxes for 5th Wheel Trailer
  • If your trailer gross weight is under 18,000 lbs you might consider the TrailAir Flex Air, part # LC328492. The TrailAir pin box you were reviewing, part # LC158778, is a 21,000 lb-rated replacement for a Lippert 1621 pin box. The comparable item from 5th Airborne is part # 5AB-E1621-610; this is also a replacement for the Lippert 1621 and is also rated at 21,000 lbs capacity. (But again please note that the TrailAir is not for use with any type of gooseneck adapter.) I have linked...
    view full answer...

  • Trailair Pinbox Fit on 2016 Forest River Cedarcreek Silverback 31RK 5th Wheel Trailer
  • The Forest River website does not list the OEM pin box installed on the 2016 Cedarcreek Silverback 31RK 5th wheel, so you'll just need to take note of the pin box part number on the pin box's sticker. With that you can use the linked article to check for the correct replacement air-cushioned pin box that will bolt on in its place. The Trailair pin box you referenced, part # LC158778, is a direct replacement for the popular Lippert 1621. Another pin box that fits in place of the 1621...
    view full answer...

  • Recommendation for Replacement Pin Box on a Lippert 1621HD
  • I recommend you go with the Reese 5th Airborne Premium Fifth Wheel Coupler # 5AB-E1621-610. This pin box is preassembled and will bolt onto your trailer using existing holes and hardware. It will also help with the chucking you're having. It has a 3 year warranty and 21,000 lbs. capacity. If you're having clearance issues we offer the Reese 5th Airborne King Pin that comes with a Turret # RP61422. This setup has the same 3 year warranty but is only rated for 16,000 lbs. Assuming...
    view full answer...

  • 5th Airborne Replacement Pin Box for Lippert 1621 on 2017 Forest River Prime Time
  • The PullRite SuperGlide B&W Adapter 4431 does allow use of your 20K SuperGlide hitch model 4400 in your 2011 Ford F-250 that has the B&W underbed gooseneck system installed. With this automatic-sliding hitch you will not need a Sidewinder pivoting pin box for turning clearance so you can use one of the cushioned fixed pin boxes we have that can replace the Lippert 1621. The linked page displays the replacement cushioned pin boxes we offer that bolt up in place of the Lippert 1621. The...
    view full answer...

  • Air Bag Adjustment and Required Air Pressure for 5th Airborne Air Ride Pin Box 5AB-E1621-610
  • Some 5th Airborne units have the air bag adjustment bolts on the top of the housing, while others are located on the underside. The fact that yours adjusts from the underside does not represent a problem. 5th Airborne recommends moving the air bag forward for lighter pin weights and rearward for heavier pin weights. For the pin weight you mention, having the bag set in the center would work best. Beginning with 80-100 psi is recommended. You can adjust the air pressure upward (no greater...
    view full answer...

  • Recommended Air Ride Pin Box for 2014 Heartland Cyclone 3010
  • For your 2014 Heartland Cyclone 3010 from what I can find online, you have a 1621 HD pin box from Lippert. For air ride, the only options we have currently available are both from Reese. The Reese 5th Airborne Premium Fifth Wheel Air Ride Coupler # 5AB-E1621-610 is a straight pin box and we actually have a video of this installation on a Cyclone trailer that I've attached. The 21,000 lb capacity will not be too much and will not make the ride too rigid because your air ride is adjustable....
    view full answer...

  • 5th Airborne Cushioned Pin Box to Replace Mor/Ryde rpb72-1621shd on a 2014 DRV Mobile Suite 38resb3
  • Since you have Mor/Ryde RPB72-1621SHD that means your trailer has a Lippert 1621 pin box. That means that the 5th Airborne Premium Fifth Wheel Air Ride Coupler # 5AB-E1621-610 that you referenced would be the correct air ride pin box. I attached an FAQ article on 5th airbornes for you to check out.
    view full answer...

  • Differences Between 5th Airborne Fifth Wheel Air Ride Couplers # 5AB-E1621-16K and # 5AB-E1621-610
  • I spoke with my contact at 5th Airborne about Fifth Wheel Air Ride Coupler, # 5AB-E1621-16K and # 5AB-E1621-610. he stated that they have the same air bag and shock. The difference is that the 21k capacity version, # 5AB-E1621-610, is constructed to be able to handle the higher capacity. For your trailer, the 16k, # 5AB-E1621-16K, would work well. I have included a link to installation details for you to view.
    view full answer...

  • Replacement Pin Box to Reduce Chucking when Towing a Big Horn 5th Wheel Trailer with Chevy Silverado
  • An air ride pin box will work well in reducing vertical and horizontal shock when towing your 5th wheel trailer. Since you have a 1621HD pin box you would need to go with the 5th Airborne coupler, # 5AB-E1621-610. This coupler can reduce chucking by as much as 60 percent and vertical shock by as much as 44 percent. I have included a link to the installation instructions and an FAQ on 5th Airborne couplers for you.
    view full answer...

  • How to find 5th Airborne Premium Fifth Wheel Air Ride Coupler for a 2008 Keystone 5th Wheel Trailer
  • To determine the correct 5th Airborne Premium Fifth Wheel Air Ride Coupler that will fit for your 2008 Montana, by Keystone, you will need to find the pin box model number and manufacturer that is on your trailer. The pin box manufacturer and model number is normally on a tag on the side of the pin box or on the face of the pin box. It could also be stamped in the face of the pin box in some instances. If you cannot find the pin box model number, you would then need to contact the trailer...
    view full answer...

  • Replacement 5th Airborne Coupler And Wedge For Pullrite Fifth Wheel Hitch
  • The 5th Airborne coupler you can use to replace your Lippert 1621, is part # 5AB-E1621-610. This king pin helps reduce shock and relieves stress on the coach frame. I have attached a link to an installation video for this coupler you can check out. If the Custom Wedge is what you are talking about that works for the 5th Airborne Coupler and your Pullrite hitch, you will need part # SWW-09.
    view full answer...

  • Recommended Air Bag Pin Box for Use with a Demco Hijacker Autoslide on a 2018 Ford F-350
  • I highly recommend going with a 5th Airborne pin box over the MorRyde mainly because other customers have said that they like the way the 5th Airborne rides over the MorRyde. The 5th Airborne is a premium pin box that greatly increases the ride quality of your trailer by using the shock and air spring for a smoother ride. This is compatible with your Demco Hijacker Autoslide 5th Wheel Hitch # DM8550024 when used with the Locking Plate # DM6026. The 5th Airborne pin boxes are pin box...
    view full answer...

  • Measuring to Determine Which Pin Box is on Fifth Wheel Trailer
  • If there is not a sticker or stamp on your pin box which has the model on it, you can either call the manufacturer with your VIN and they should be able to tell you, or you can take some measurements and that will allow you to know what model is on your 2015 Primetime Spartan. I have added a link to a help article, "Measuring to Determine the Correct Replacement Pin Box for a 5th-Wheel Trailer" which details this process. That article will have you select the pin box style from a set of...
    view full answer...

  • 5th Wheel Hitch Adapter for 2015 Ford F-350 Super Duty With Factory 5th Wheel Prep Package
  • Since your 2015 F-350 Super Duty has the factory 5th wheel prep package you'll want to use the Reese Elite Series Underbed Rail Adapter # RP30156 which is shown in the linked video. This adapter accommodates standard 5th-wheel trailer hitches with weight ratings of 15,000 lbs, 16,000 lbs, or 20,000 lbs. You can still use your 25K-rated hitch but the system capacity will be 20,000-lbs overall. I've linked for your reference an article on 5th wheel installation tips.
    view full answer...

  • 5th Airborne Recommendation for a Lippert 1621HD Pin Box
  • The difference between the 5th Airborne Premium Fifth Wheel Air Ride Coupler # 5AB-E1621-610 and the 5th Airborne Premium Fifth Wheel Air Ride Coupler # 5AB-E1621-16K is the weight capacity and a different bolt pattern. You would want the # 5AB-E1621-610 since your pin box is a 1621HD. The # 5AB-E1621-16K is only designed to work with the 1621 pin box so I would not recommend it for you.
    view full answer...

  • Hitch Trailer Before or After Filling Air Spring on a Fifth Gear 5th Airborne Pin Box Coupler
  • First, hitch the trailer to the truck, then add air. Proper pressure level depends on many factors like truck used and what trailer the Airborne is on. Start at 80-100 PSI, if the ride is too stiff, let some pressure out. Too soft, add some more. Do not ever exceed 120 PSI. If you cannot get a good ride, then the air spring may need to be adjusted. See page 4 of the instructions. I would let most of the pressure out before you un-hitch the trailer from the truck.
    view full answer...


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Info for this part was:

Expert Research:
Michael L
Expert Research:
Robert G
Expert Research:
Patrick B
Expert Research:
Michael H
Expert Research:
Jameson C
Video by:
Joshua S
Test Fit:
Nicholas E
Video Edited:
Jacob T
Updated by:
Adele M
Expert Research:
Adam R
Video Edited:
Dustin K
Expert Research:
Lori W
Photos by:
Sam P
Installed by:
Randy B
Video Edited:
Chris R
Updated by:
Sarah W
Updated by:
Alexander C
Video by:
Zach D
Updated by:
Hannah L
Test Fit:
David F
Updated by:
Isabelle B

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