1. Fifth Wheel King Pin
  2. Lippert
  3. Lippert 0719
  4. 18000 lbs GTW
  5. Upgraded Pin Box
  6. Absorbs Road Shock and Reduces Chucking
Trailair Air Ride 5th Wheel Pin Box - Lippert 0719 - 18,000 lbs

Trailair Air Ride 5th Wheel Pin Box - Lippert 0719 - 18,000 lbs

Item # LC179879
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Retail:$1,563.08
Our Price: $1,065.91
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Fifth Wheel King Pin
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Shipping Weight: 165 lbs
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Lippert Absorbs Road Shock and Reduces Chucking Fifth Wheel King Pin - LC179879
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Enjoy smooth, stable towing with your fifth-wheel trailer by replacing your ordinary pin box with this air-ride-equipped model. An internal air bag and built-in strut absorb road shock so that you won't feel it. Replaces Lippert 0719 pin boxes. Call 800-298-1624 to order Lippert fifth wheel king pin part number LC179879 or order online at etrailer.com. Free expert support on all Lippert products. Guaranteed Lowest Price and Fastest Shipping for Trailair Air Ride 5th Wheel Pin Box - Lippert 0719 - 18,000 lbs. Fifth Wheel King Pin reviews from real customers.
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  • Reviews (84)
  • Q & A (30)
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Lippert Fifth Wheel King Pin - LC179879

  • Lippert 0719
  • 18000 lbs GTW
  • Upgraded Pin Box
  • Lippert
  • Absorbs Road Shock and Reduces Chucking
  • Fixed Turret

Enjoy smooth, stable towing with your fifth-wheel trailer by replacing your ordinary pin box with this air-ride-equipped model. An internal air bag and built-in strut absorb road shock so that you won't feel it. Replaces Lippert 0719 pin boxes.


Features:

  • Air ride pin box replaces standard pin box on your 5th-wheel trailer to cushion your ride, improve handling, and limit strain on truck and trailer
    • Minimizes chucking
    • Eliminates bounce and jarring
  • Internal air bag absorbs road shock
    • Scissor-like motion allows pin box to compress, compensating for jarring and bounce
    • Built-in shock ensures that pin box rebounds - keeps air bag from breaking down
  • Black powder coat provides rust resistance
  • Sturdy steel construction
  • King pin connects to any 5th-wheel trailer hitch
  • Bolt-on installation with no assembly required
  • Made in the USA


Specs:

  • Designed to replace Lippert 0719 5th-wheel pin box
  • Weight capacity: 18,000 lbs
  • 1-Year limited warranty


Notes:

  • Do not use the Trailair air ride pin box with any type of gooseneck adapter.
  • Because of the size of this item, it ships via truck freight.

Getting there is half the fun, right? Not if you're being bumped, jerked, jammed, and pushed around from the chucking and road shock that occurs as you tow your fifth-wheel trailer or RV. And imagine the costly wear and tear on your trailer as it endures that rocky ride.


Put the fun back into your trip and ease the stress on your trailer by replacing your factory pin box with the Trailair air ride pin box. The internal air bag and built-in shock work together to cushion your ride, improve handling, and limit strain on both your truck and your trailer.


Air Bag Absorbs Road Shock

Lippert Trailair air ride pin box air bag and shock

Standard pin boxes without any type of shock absorption transfer road shock to your trailer, resulting in potential damage to the trailer and an overall bumpy ride. But the Trailair air ride pin box absorbs shock and cushions your ride as you pull your fifth-wheel trailer. When you encounter uneven terrain on your trip or hit a pothole on the highway, the Trailair pin box compresses vertically, similar to how a pair of scissor blades closes in on each other. This compression transfers the road shock and vibrations to the internal air bag, saving your fifth-wheel hitch, trailer, or tow vehicle frame from enduring a rocky ride.


A built-in strut, or shock, controls the Trailair's compression so that the internal air bag doesn't burst. The strut also causes the pin box to appropriately rebound without any bounce, and positions it to be ready for the next bump in the road.


Simple Setup and Installation

First, simply remove your existing Lippert 0719 pin box from your trailer. The Trailair uses the same bolts that held on your original pin box so no additional hardware is required for installation. Plus, the Trailair pin box comes out of the box ready to be put on your trailer, so no assembly is needed. Because the Trailair is quite heavy, you should put it on an elevated surface or have a friend help you support its weight during installation.


Lippert Trailair air ride pin box air intake valve and inflation indicator

The internal air bag should be inflated after the pin box has been mounted on your trailer. Using the air intake valve, inflate the air bag until the outer cylinder of the shock rises high enough to fully expose the yellow inflation indicator sticker.



179879 Lippert Components (LCI) Air Ride by Trail Air Fifth Wheel Kingpin Box for M15 Lippert 0719

Replaces UF35-946206 Ultra-Fab Air Ride Trail Air Kingpin Box






Customer Reviews

Trailair Air Ride 5th Wheel Pin Box - Lippert 0719 - 18,000 lbs - LC179879

Average Customer Rating:  4.8 out of 5 stars   (84 Customer Reviews)

Enjoy smooth, stable towing with your fifth-wheel trailer by replacing your ordinary pin box with this air-ride-equipped model. An internal air bag and built-in strut absorb road shock so that you won't feel it. Replaces Lippert 0719 pin boxes.

- LC179879
by:

The Trailair fits the bill for us. We have a Beacon 5th wheel and sitting with the trailer level the pin box wings sit below the bed side rails. With the original Rotaflex or Reese goose box the wings would hit the side rails in a turn more than 50 degrees. With the shorter Trailair the wings don’t hit. We are using it with an Andersen Ultimate with the coupler forward of the pin.



- LC179879
by:

I'm pleased with the pin box. Put it on my 5th. wheel. The airbag gives us a better ride than any other pin box. Its a great product.



- LC179879
by:

Using this Trailair Air Ride 5th Wheel Pin Box to replace the OEM standard (rigid) pinbox on my Montana unit allowed me to both lower the pin and shorten the pin box to mate up perfectly with my Curt hitch in a longbed GMC 3500. The ride greatly improved. I do wish the air valve had a 45 or 90 degree turn as it can be very difficult to get most air chucks onto the valve. There is not much clearance between the top of the valve and the underside of the the trailer, and the unit does require frequent refilling. If not for that difficulty I would give five stars.



- LC155943
by:

Review from a similar Trailair in Fifth Wheel King Pin


I purchased this Lippert Air Ride hitch for my 40 foot Genesis Supreme trailer and wish I had bought it 2 years ago and installed it. What a difference is has made both in the trailer when towing as well as the difference in my truck while pulling it down the road. eTrailer had the best price and fast shipping. They as well helped me with verifying the right part number that works with my trailer. I purchase many parts and accessories from eTrailer and will continue to purchase from them in the future.


Comments
My hitch is working great! It has made a big difference in how well the trailer rides on my truck. No more harsh bumps when I drive over rough roads or poor bridge approaches. Awesome product!
Joe S - 06/23/2021


- LC155943
by:

Review from a similar Trailair in Fifth Wheel King Pin


Good looking product. Mounted it on a Montana 40ft 5th wheel. It arrived 2 weeks ahead of schedule. It was easy to install. I did have to grind the corners of the trailer frame bracket as the jaw hinge wouldn’t allow the bolt holes to line up. Once the corners were ground, everything lined up perfectly. It only took my son and I to pick up the pin box and once the first bolt was in, it was simple and easy to do the rest. There are 3 things to complain about. 1. The position of the air valve sucks. Really hard to get at. 2. The mark on the shock for proper inflation is not marked well. Had to get on hands and knees with a flashlight to actually see it. It was suppose to be bright yellow, it’s black, same as the shock. My 3rd complaint would be the fact that I had to drill 3 holes into the pin box to reattach the brake safety cable and the electrical wire box. The biggest positive thing is, is how much of a difference it has made in the ride quality for not only with the trailer but the truck as well. Soooo much smoother than the original pin box. Would I buy another one? You better believe I would. Wondering why I didn’t buy it sooner. Won’t have another 5th wheel without it.



- LC158778
by:

Review from a similar Trailair in Fifth Wheel King Pin


Added this pin box to improve ride and give my rv a smoother pull. The owners manual says you can use the orginal nuts and bolts, but felt getting new ones that are grade 8 was the best route for me. The pin box had several deep scratches due to shipping so I mounted it and then painted over the scratches and resolved the problem. The rebound shock didn't have the yellow arrow like the one in the pictures, does have an max inflation stamped in the shock but black on black doesn't help for proper inflation so I painted the arrow yellow, not great but it works. Number one issue is no matter the inflation of the airbag I can't get it too the top of the arrow as required. I checked the PSI on the airbag and was at 135 PSI. I felt that was too high of air pressure and there's nothing in the manual or online to say how much air should be in an airbag so I went with 98 PSI to be safe. As for the ride I feel it was an improvement over the previous pin box but to be honest my F450 has airbags as well, so was the improvement due to the pin box or because of the truck airbags. I'll go with both had factors with the ride. But the number 1 factor for me was the 21000 weight capacity. 4 out of 5 is the issue with inflation and what's correct.



- LC158778
by:

Review from a similar Trailair in Fifth Wheel King Pin


We ordered our Trailair Pin Box and it shipped and arrived earlier than expected. Great customer service and Excellent help with setup after installation.



- LC158778
by:

Review from a similar Trailair in Fifth Wheel King Pin


Really made a positive improvement in towing my RV. The hitch absorbs the shocks from the trailer when towing and therefore the ride is much better in the tow vehicle. I also think it works the other way as well, RV is somewhat shielded from shocks the tow vehicle is experiencing. Am so impressed that I moved it over to our new RV. Well worth the time and cost to buy and install.



- LC158777
by:

Review from a similar Trailair in Fifth Wheel King Pin


Great phone assist prior to ordering as always and product was just as described. Shipping was a little hard to track as UPS advised the unit was sitting in our town but unable to locate for 5 days. E-Trailer is always awesome to work with. Thanks to all your staff.



- LC158778
by:

Review from a similar Trailair in Fifth Wheel King Pin


The king pin has eliminated about 80% of the chucking. I pull 16k fiver. I am very happy with it. Related I always use etrailer for my parts purchase. One time I was stranded near Disneyland. I needed shackle. They had me triple check for correct part and rushed delivery. These guys are the real deal.



- LC158778
by:

Review from a similar Trailair in Fifth Wheel King Pin


What a big difference it has made. I was tired of the trampoline action but now it done so thank you for your timelyness in sending my order now I have to look at a Anderson hitch



- LC155943
by:

Review from a similar Trailair in Fifth Wheel King Pin


Have not did a road test yet but it’s installed. Way heavier than factory. I have talked to many that have this and like it. Helps reduce chucking back and forth movement. Nothing will be solve all if you are on a rough road you will feel it. No hitch will eliminate. Was fairly easy to install you will need help to lift. I used the tailgate on the truck and backed under and used blocking to get in place. I installed pretty much myself. My wife help some with aligning the bolts.



- LC155943
by:

Review from a similar Trailair in Fifth Wheel King Pin


Air Ride Pinbox arrived on time and in excellent condition. It is a perfect fit and was an easy installation. Thank You, Jack Herndon



- LC158778
by:

Review from a similar Trailair in Fifth Wheel King Pin


The trailair pin box I ordered and received looks be be everything I was told it would be. I have not bin able to road test the hitch yet as it's only early March and living in north east Minnesota, we still have about two feet of snow . I'm sure hoping it works as well as its supposed to.


Comments
I lovin the ride with this air ride pinbox. It works well for the ride on both truck and trailer, glad I decided to make the investment.
Dean s - 03/07/2021


- LC158778
by:

Review from a similar Trailair in Fifth Wheel King Pin


I love this AirRide by Trail-air. It provides an incredibly smooth ride on the road. You can adjust the amount of air for your ride, the Schrader valve is right on top of the unit and easy to access. My Trail air installed easily on my Forest River Sandpiper 372LOK mid bunk, especially with help from my Dad. This Trailair solved a big problem for me. I needed an extra couple of inches space between my 2018 Ford Super Duty DRW and the coach. My truck came with the Ford factory-installed Reese 27K hitch and I needed more clearance to allow the tailgate to drop without touching the coach. The kingpin on the Trailair sits at least 2” forward of the factory kingpin and provided that desperately needed space. It really makes for smooth and quiet ride ! etrailer folks were very helpful. The first unit was damaged by the freight company and when I notified them, etrailer sent another unit quickly. I will buy from etrailer whenever I can..


Comments
I still love the ride it provides- always smooth. Wouldn’t use a standard kingpin again. The airbags lose air over time- it’s my only complaint. Not enough to effect performance on a week-long trip but it loses air. I tightened the fill valve. Will re-tape the valve again if needed.
Bernie C - 05/26/2020


- LC155943
by:

Review from a similar Trailair in Fifth Wheel King Pin


This is my second trailair pin box and I just love them it takes all of the bouncing out of the truck in the camper and makes it a smooth ride. Shipping was great and product came packaged as good as possible.



- LC158778
by:

Review from a similar Trailair in Fifth Wheel King Pin


The ride is so much better. I also added air bags to my truck!



- LC158778
by:

Review from a similar Trailair in Fifth Wheel King Pin


This is the 2nd air ride hitch i've purchased. First one was on another 5th wheel and stupidly didn't keep it when I traded for the one I have now. They work great! It takes the shock out of the bumpy roads and keeps camper insides from re-arranging when traveling. Very happy with the hitch.



- LC158778
by:

Review from a similar Trailair in Fifth Wheel King Pin


Had a great experience with etrailer ordered my air ride pin hitch and got a great part at a great price. Thanks everyone at etrailer I appreciate you all. Bryan



- LC155943
by:

Review from a similar Trailair in Fifth Wheel King Pin


etrailer did an awesome job to get my pinbox to me. They even price-matched [online retailers] best deal. Very happy with my purchase.



- LC158778
by:

Review from a similar Trailair in Fifth Wheel King Pin


Before installing the airride , dish's shifted and draws opened. Now with easy installation and running 10 thousand miles none of the old problems appeared. Warning, always before leaving check air shock to be at the top of the arrow on shock. Great product!



- LC155943
by:

Review from a similar Trailair in Fifth Wheel King Pin


Delivery was quick and product was as advertised. I called customer support (Danielle H) and she was extremely helpful and knowledgeable. Danielle helped me make sure I ordered the proper Trailair king pin based on dimensions of my current 5th wheel.



- LC158778
by:

Review from a similar Trailair in Fifth Wheel King Pin


Looks like a very good product, Easy installation only took an hour. Took it on a short test run On a very rough road It seemed to work well but we'll know more on the next upcoming trip. Packaging was inadequate could have used more Tie down straps , but no damage.etrailer is great to work with!!!



- LC158778
by:

Review from a similar Trailair in Fifth Wheel King Pin


Took all the transfer of trailer hunting out of tow vehicle as you travel. Also give me more turning clearance on short bed F250.



- LC158777
by:

Review from a similar Trailair in Fifth Wheel King Pin


etrailer is and excellent site to order parts for your trailer. They walked me thru the part numbers so the pin box I ordered fit. No problems with the install and I can't wait to take my first trip with the new pin box.


Comments
Awesome. I live on treacherous roads and this takes the bounse out of my trailers and helps keep the trailer from coming apart. I highly recommend this product.
David - 03/05/2020


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Show More Reviews

Ask the Experts about this Lippert Fifth Wheel King Pin

  • Which Reese Goose Box Fifth Wheel Adapter Fits 2015 Heartland Cyclone 4100HD
    From previous customers with your same trailer we know that your 2015 Heartland Cyclone 4100 HD came with a Lippert 1621 pin box so then for a Goose Box replacement you'd want the # RP94720 which has a 20k capacity of the part # RP94716 which has a 16k capacity. I looked up the GVWR of your trailer and determined it's 18k so you'd need the higher capacity # RP94720.
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  • Best Fifth Wheel Pin Box Replacement to Reduce Chucking
    Your correct set-up would depend on the length of your truck bed. If you have a 6-1/2 foot bed and a sliding hitch, the Ultra-Fab Trailair you referenced, part # LC179879 would dramatically improve your ride quality. This pin box is a direct replacement for the Lippert 0179. If you had the Lippert 1621 king pin, you would need part # LC158778. If you have the 5-1/2 foot bed, you would need to use a 5th Airborne Air Ride with Sidewinder to provide additional clearance between the fifth...
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  • Installation Instructions for Lippert Trailair Air Ride 5th Wheel Pin Boxes
    I attached the installation instructions for the Lippert Trailair Pin Box part # LC179879 that you referenced to this page.
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  • King Pin Center to Mounting Hole Measurements for Trail Air Air Ride King Pin # LC179879
    On the Lippert Trailair Air Ride 5th Wheel King Pin, # LC179879, king pin center to the first row of mounting bolt holes measures 9 inches, center king pin to last row of mounting bolt holes measures 16-7/8 inches. If you look at the diagram I provided, you can see the other relevant measurements for this replacement king pin.
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  • 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.
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  • Best Pin Box Replacement to Replace Lippert 1621HD to Reduce Chucking
    On the hitch side of your setup the Companion part # BWRVK3500 is normally one of the quietest hitches out there. Normally when people want something quiet and smooth the Companion hitch is the answer so in your situation a cushioned pin box would give you the biggest benefit. The Flex Air pin boxes provide the most cushioning since the cushion vertically as well as horizontally so for one to fit in place of your Lippert 1621 you'd want the # LC369535 which has a 21k capacity. This will...
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  • Can Trailair Pin Box Help with Truck Bed Rail Clearance
    The Trailair Pin Boxes like the part # LC179879 are compatible with Andersen Ultimate fifth wheel adapters, but you'll need to verify your trailer's current pin box to make sure this is the correct fitting Trailair. This # LC179879 is designed to replace the Lippert 0719 pin box. Which you'd need to check the pin box you have for a sticker or plate and that info will be listed there. If you have a different pin box model let me know and I'll pick you out the correct Trailair for it....
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  • Air Bag Pressure Adjustment of Lippert Trailair Air Ride 5th Wheel Pin Box LC179879
    With the Lippert Trailair Air Ride 5th Wheel Pin Box # LC179879 the air bag pressure should be adjusted once you have hitched the loaded trailer. Inflate the air bag until the outer cylinder of the shock rises high enough to fully expose the yellow inflation indicator sticker. From that point you can use your preference to fine-tune the pressure for the specific loading condition of the trailer.
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  • How to Prevent Water From Filling Up Inside Lippert Trailair Air Ride Pin Box When Parked
    The Trailair Air Ride 5th Wheel King Pins like the # LC179879 will indeed collect some water during heavy rains. As you mentioned in your question, one way to prevent this from happening is to simply drill a small hole, using a 1/8 inch to 3/16 inch drill bit into the bottom of the pin box. This will allow the water to drain as needed. This should resolve the issue you are having to with rust and corrosion buildup.
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  • Using Trailair Air Ride 5th Wheel Pin Box with PullRite SuperGlide 5th Wheel Hitch
    We do not currently carry PullRite products, but based on my research, it looks like the correct capture plate to use with your PullRite SuperGlide Hitch is their part number 331758. This plate is specifically designed to be used with the Trailair Air Ride Pin Boxes, such as the part # LC179879 that you are looking at. I do recommend verifying this with your particular PullRite, as it's possible you have a different model. The Trailair Air Ride 5th Wheel Pin Box # LC179879 will work...
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    There is more than one Rota-Flex pin box, not knowing which model you have and what weight rating you are looking it is challenging for me to make best recommendation. However, please take a look at the Trailair Air Ride 5th Wheel Pin Box - Lippert 0719 - 18,000 lbs. # LC179879. Or you may need to go with a taller hitch such as the Curt Q25 # C16566, if you need a slider type hitch. If your RV, when connected to the tow vehicle is not level then the king pin and hitch may not be the...
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  • Replacement For Lippert 0719 Fifth Wheel Pin Box
    The replacement for the Lippert 0719 pin box we carry is the Trailair Air Ride 5th Wheel King Pin # LC179879. It has a weight capacity of 18,000 lbs and is a direct replacement for an OEM pin box. You are correct that we do not offer a Tri-Glide Air Ride pin box for a replacement of the Lippert 0719.
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  • Can a TrailAir Pin Box be Retro-Fitted with a Rota-Flex Head/King Pin
    We do not have a kit that would change your TrailAir pin box to a Rota-Flex style. The Rota-Flex would be a downgrade from the TrailAir style pin box so I am not sure that would be the best route to take. The new latest and greatest are the Flex Air pin boxes, # LC328484. The design can be described as a cross between a Rota-Flex and a TrailAir. The best of both worlds! I have linked a couple of videos you can check out on the Flex Air for you.
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  • Cushioned Pin Box to Reduce Chucking and Jarring When Towing 2011 Heartland 5th Wheel
    A cushioned pin box can help reduce some of the chucking and jarring you feel when pulling your Heartland trailer. Cushioned pin boxes like the Trailair Air Ride # LC179879 that you referenced have an adjustable internal air bag and shock absorber that work together to limit both lateral chucking and vertical jarring. Replacement pin boxes are selected based on the original pin box maker and part number. The unit you referenced is a direct bolt-on replacement for a Lippert 0719. The...
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    I did some research on your 2016 Heartland Edge and it has a Lippert 1621 style pin box and a GVWR of 16,250 lbs so the Goose Box you'd need is the # RP94720.
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  • Trailair Rotaflex Pin Box Replacement
    I reached out to my contact at Lippert and this pin box is not serviceable. Is there a chance you are using an autosliding hitch or something that might exert some leverage on that cushion area? The replacement pin box would be the Lippert # LC328330 (1621 Bolt Pattern - Rated 18K) Trailair pin box with rubber compound to absorb shocks. Another option is the Lippert # LC179879 Trailair Flex Air rated 18,000 pounds and 1621 bolt pattern with an internal airbag and a shock absorber...
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  • How to Install Replacement Air Bag in Trailair Air Ride
    According to Lippert, here is how you will need to install your Replacement Air Spring for Trailair 5th Wheel Pin Boxes # LC432404: "The bag is fastened at the bottom first by inserting the carriage bolt in the keyhole shape opening on the lower plate allowing the bolt head to slide in and be pulled forward securing the bag in place. Secure air bag with the air fill fitting in the up position with 2 locking nuts, not exceeding 20 ft/lbs  - torque on the top plate of the air bag. Install...
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  • Air Bag Inflation Instructions On Trailair Pin Boxes With 18,000 lb Capacity
    There are a couple different Trailair pin boxes for the 18,000 lb capacity. There is the Flex Air like # LC328492 and the Air Ride like # LC179879. With either model, the air bag should be inflated until the outer cylinder of the shock rises high enough to fully expose the yellow inflation indicator sticker that you can see in its entirety on part # LC177223. There is not a listed max psi.
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  • Replacement Air Bag Recommendation for Lippert Trailair L07 for 1716 Pin Box
    What you'd need is the part # LC432404 as long as you have one of the following: Air Ride - Lippert 1621 with 21,000-lb capacity (LC158778) Air Ride - Lippert 0719 with 18,000-lb capacity (LC179879) Flex Air - Lippert 1621 with 18,000-lb capacity (LC328492) Flex Air - Lippert 1621 with 21,000-lb capacity (LC369535)
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  • Troubleshooting Pinbox on Fifth Wheel That Hits Side of Truck Bed
    Sounds like your best bet is to go with a shorter pinbox like # LC179879. I checked with Lippert and the measurement from the kingpin to the rear of the box is less than 31", so with this new pinbox you should not have any problems with your fifth wheel hitting your truck's bed rails. My contact said that the bolt holes are similar to the pinbox you have now so they will line up fine.
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  • 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....
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  • Width of Trailair Air Ride 5th Wheel Pin Box 155943
    The Trailair Air Ride 5th Wheel Pin Box # LC155943 measures 12-1/2 inches at the mounting plates. However, in order to find the correct replacement pin the easiest way is to know the manufacturer and model number of the pin box on your fifth wheel and match that with the correct replacement. You can often find this information on a stamp or sticker directly on the pin box itself. For example, the Trailair Air Ride 5th Wheel Pin Box # LC155943 you asked about is a replacement for a Lippert...
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  • Replacement Air Bag for Lippert Trailair Pin Box
    There is a replacement air bag # LC432404 for Trailair pin boxes that you could use. The replacement air bag will work with Trailair # LC158778, # LC179879, # LC328492, and # LC369535.
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  • Replacement Air Bag for a TrailAir 5th Wheel Pin Box
    There are numerous TrailAir pin boxes that could take replacement air spring # LC432404. Check your pin box for a sticker that has any sort of part number on it and that will tell us which one you have. Air bag # LC432404 is designed for the following pin boxes: Air Ride - Lippert 1621 with 21,000-lb capacity # LC158778 Air Ride - Lippert 0719 with 18,000-lb capacity # LC179879 Flex Air - Lippert 1621 with 18,000-lb capacity # LC328492 Flex Air - Lippert 1621 with 21,000-lb capacity...
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  • Replacement Air Bag for Lippert TrailAir Pin Box
    I have a solution for you, but you're not going to be able to use a Firestone vehicle airbag to replace the bag on your TrailAir Pin Box. Instead you'll need to use the Replacement Air Spring for Trailair 5th Wheel Pin Boxes # LC432404 This airbag will work as a replacement on the following TrailAir models: Air Ride - Lippert 1621 with 21,000-lb capacity ( # LC158778 ) Air Ride - Lippert 0719 with 18,000-lb capacity ( # LC179879 ) Flex Air - Lippert 0719 with 18,000-lb capacity (...
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  • Replacement Air Bag for Trailair Pin Box
    Your M15 pin box is the Trailair Air Ride 5th Wheel Pin Box # LC179879 and the replacement air bag it is part # LC432404. You may also want the shock # LC177223 which is designed to help keep the air bag from breaking down as you stated was the issue. The L05 # LC328492 and has same air bag # LC432404. They have used this for all their air ride options for 18K and 21K models. You may also be interested in the Replacement Pin Box Tank Valve for Lippert or UltraFab TrailAir Pin...
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  • Fit of Trailair UF35-946215 Air Ride Replacement Pin Box on 415 Raptor 5th Wheel
    Air Ride pin boxes aren't RV specific, they're specific to the OEM pin box used by the manufacturer when your 5th wheel we manufactured. All the OEM pin boxes use a different bolt pattern, so it's crucial to identify which one you have. The air ride pin box you need will depend on the manufacturer and model number of the OEM pin box on your 5th wheel. The pin box will have a sticker or ID plate on it somewhere that lists the manufacturer and model number. The # UF35-946215 Trailair...
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Info for this part was:

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