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  1. Fifth Wheel King Pin
  2. Lippert
  3. Lippert 0719
  4. 18000 lbs GTW
  5. Absorbs Road Shock and Reduces Chucking
  6. Upgraded Pin Box
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
Retail:$1,445.95
Our Price: $1,130.06
You Save: $315.89
Fifth Wheel King Pin
This item qualifies for Free Truck Freight Shipping
Shipping Weight: 165 lbs
Quantity: 
In Stock
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Product Expert Kathleen M

Is this right for you? Product Expert Kathleen M says:

Yes, if you:

  • Like having the "Cadillac" option - RVers with this pin box say it feels like their fiver is floating over the road
  • Often drive over very rough roads and want to save your truck and trailer (and yourself!) from getting beat up by all the bumps and dips

No, if you:

  • Have little space between the pin box and the nose of your trailer which can make monitoring and maintaining the pressure in the air bag a chore
  • Use a gooseneck adapter to tow your fifth wheel
  • Haul a trailer that weighs over 20,000 lbs
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. 1-636-306-4830 to order Lippert fifth wheel king pin part number LC179879 or order online at etrailer.com. Free expert support on all Lippert products. Great prices and Fastest Shipping for Trailair Air Ride 5th Wheel Pin Box - Lippert 0719 - 18,000 lbs. Fifth Wheel King Pin reviews from real customers.
  • All Info
  • Reviews (118)
  • Q & A (0)
  • Photos
  • Why etrailer?

Lippert Fifth Wheel King Pin - LC179879

  • Lippert 0719
  • 18000 lbs GTW
  • Absorbs Road Shock and Reduces Chucking
  • Lippert
  • Upgraded Pin Box
  • 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:  4.7 out of 5 stars   (118 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.

by:

I just completed a 2800 mile trip after installing the Trail Air Air Ride pin box on my Solitude 5th wheel. I was able to install it myself from the bed of my pickup using a hydraulic bottle jack to lift it into position.

I previously made the same trip with the factory installed MORryde Cushioned Pin Box and the Trail Air provides a greatly improved ride. With the MORryde, I encountered several sections of concrete highway that set up a front-to-back oscillation which persisted across many miles. I didn't have that issue with the Trail Air.

I didn't order the Flex Air model that also included the flexible block because I was concerned the added height of that pin box would have been a problem. However, after installing the non-flex Trail Air I've found that the other one would have also worked out if I lowered my truck hitch an inch or two.

Also worth noting, this pin box is four inches shorter than the 1621 MORryde it replaced. However with a long bed truck I have no clearance issues and can still lower the tailgate when hitched up.




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.




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.




by:

The pin box works perfectly.




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.




by:

Review from a similar Trailair in Fifth Wheel King Pin


I’ll start from the second I ordered this online. Confirmation email, then within days a shipping confirmation. When I ordered my shipping said 2 weeks out for delivery. I got the item in 9 days. The communication from the freight service was top notch. Unlike, some reviews the item was in great condition when it arrived. On a pallet in a box. No complaints. The driver even let me back up to his lift gate and help me slide the item into my truck for easier install. I had previously removed the factory hitch box prior to arrival so when the upgraded item arrived I was ready for install. Took about an hour to line everything up. Used a jack in the truck bed to help lift item where I needed it. I haven’t towed with it yet, that’ll be next week. But it looks beastly and like it’ll be a much more comfortable ride for me and my truck. Very happy so far, will leave an updated review after an out of state trip next weekend. etrailer was great. First item Ive ordered from you all but I’ll be back. Thank you!! Happy customer!!




by:

Review from a similar Trailair in Fifth Wheel King Pin


With the help of my wife, I had the Flex Air pin box installed within 1.5 hours. Used a floor jack on top of my pickup tailgate.




by:

Review from a similar Trailair in Fifth Wheel King Pin


Smooths out the ride greatly, really pleased with so far. I removed the Air chuck and installed a tee with Gauge and air chuck makes it easy to monitor air pressure before traveling, one should note that these do bleed pressure down in few weeks that is pretty much normal for air bags of this type. I have a Dewalt cordless mini compressor and it works great to quickly & quietly pressurize before trip. I usually set my at 65 PSI




by:

Review from a similar Trailair in Fifth Wheel King Pin


Our fifth wheel experienced pin box cross frame cracking while on a trip. After having it properly repaired I decided to invest in the Trail-air pin box to alleviate the shock and harsh pounding from our lousy roads. I purchased from etrailer.com and installed it myself. Being only a 29 foot 5th wheel the tounge weight is low so after experimenting with pressures I run 40 psi in it and it flexes when hitting bumps or dips taking the stress off the trailer. Tows like a dream. Knowing what I know now I would have bought and installed it when I bought the 5th wheel and saved a repair during a trip. It is expensive but well worth it.




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.


Comments
Its been a year since last review, still havent had any issues with the pin box. Works well and provides a smooth ride under most conditions. If you run into rough patches on the road youll feel it and in my opinion there isnt anything made today that will eliminate that type of chucking. I also have airbags on my truck and it still happens. Now for the pin box 1. It works as advertised and improves the ride substantially. 2. The pin box is very well built and no issues period. 3. One issue is the air valve on top of the pin box which makes you get up into the truck bed to fill it with air. What would be a improvement would have a extension that attaches to the valve that would allow you to add air without having to get into the truck bed. To summarize, this pin box has been a great investment and if youre looking a replacement box, youll be happy you purchased this one.
David M - 03/04/2022


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


Comments
I towed our Keystone Raptor about five thousand miles with the original pin box before I decided to try to smooth out the ride so purchased and installed the Trailair Air Ride 5th wheel pin box. I have since towed it approximately Six thousand miles and We are completely satisfied.
Jack - 08/27/2022


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


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.




by:

Review from a similar Trailair in Fifth Wheel King Pin


Exact fit replacement for cheap Keystone OEM part. Fit was so exact, I installed it by myself. Arrived earlier than expected. I hope this will reduce the chucking and smooth out the pull of a 16K RV trailer. I did have to purchase additional bolt sets from my local Home Depot (OEM was 12 sets, this is 18 sets 5/8-11 x 2in Grade 8 with flat and lock washers all torqued to 180 ft lbs).




by:

Review from a similar Trailair in Fifth Wheel King Pin


Stout, quality pin box. Quick shipping and great service. The final condition of the shipping container and some heavy scaring on the pin box left much to be desired from the freight carrier, but scuffs don't effect the functionality of the component.




by:

Review from a similar Trailair in Fifth Wheel King Pin


Can’t believe what a difference it made. Pulling a 38’ Avalanche with a 2019 Ram dually and we now glide over formerly rough bridge approaches. I’m 76 and my brother-in-law is 69 and we installed it at our RV Park in about 20 minutes! That included removing the old one! Recommending it to all my friends!




by:

Review from a similar Trailair in Fifth Wheel King Pin


The pin box worked out very well. You still feel the bumps but almost no chucking. My wife likes to sleep in the truck with her head against the head rest, but she could not do that with the old pin box. The only thing that I had to do with the new pin box was drill out the holes because the old pin box had bigger bolts.




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.




by:

Review from a similar Trailair in Fifth Wheel King Pin


Not the improvement I was expecting. Wish I would have got a gen-Y hitch




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.


Comments
Makes hook up a snap!
Dale H - 10/05/2021


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.




by:

Review from a similar Trailair in Fifth Wheel King Pin


You shipped the wrong kingpin!!! I had mega problems shipping it back to you, while your company held my payment, until you received the incorrect Kingpin back, all due to your company’s error!! That is why I will no longer do busywigh you!




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


by:

Review from a similar Trailair in Fifth Wheel King Pin


I think that this is just what the doctor ordered. I have not installed it yet, but this looks very much like what I need for my trailer!




by:

Review from a similar Trailair in Fifth Wheel King Pin


I noticed a much better ride inside my truck after installing my 5th wheel pin box.



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Show More Reviews

See what our Experts say about this Lippert Fifth Wheel King Pin

  • 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 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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  • 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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  • Which Pin Box Will Eliminate Chucking the Best on a 4100 King Cyclone Towed by a GMC 3500
    All air ride pin boxes will do a better job of eliminating chucking and bouncing than OEM pin boxes. The best pin box would be the TrailAir Tri-Glide Air Ride pin boxes. These pin boxes replace specific OEM pin boxes, so in order to recommend the correct TrailAir Tri-Glide pin box for you, I would need to know the manufacturer and model number of the OEM pin box that is currently on your King Cyclone. This information is usually on a plate or sticker on the pin box. If you cannot locate...
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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 perfectly...
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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. The...
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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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  • Is Trailair Pin Box Compatible with Andersen Ultimate Hitch
    Yes, the Trailair pin box part # LC179879 that you referenced is compatible with Andersen Ultimate fifth wheel adapters.
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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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  • How To Determine Which Air Ride Pin Box Fits My 2018 Heartland Cyclone 4200 Toy Hauler?
    In order to determine which air ride pin box like the Trailair Air Ride 5th Wheel Pin Box # LC179879 will fit your 2018 Cyclone 4200 Toy Hauler, you will need to find out which pin box you current have first. To do this, you can first try and look for a product sticker on your current pin box that will have the pin box type on it. For instance # LC179879 is designed to replace Lippert 0719 pin boxes. Or If you're unable to find a sticker with this information on your pin box, you can...
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  • Compatibility of Andersen Ultimate 5th Wheel Connection Hitch with Trail Air Air Ride Pin Box
    As long as your existing pin box is a Lippert 0719, the 3220 Andersen Ultimate 5th wheel connection hitch will be compatible with the # LC179879 Trailair Air Ride pin box.
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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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  • Trailair Air ride Pin Box for 2017 Jayco Eagle RSTS
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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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  • 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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  • 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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  • 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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    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 to...
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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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  • 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 Boxes...
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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 # LC369535
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  • Replacement Air Bag for Lippert Trailair Pin Box
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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 ( # LC328484...
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  • Most detailed, accurate fifth wheel king pin information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Adam R
Expert Research:
Adam R
Employee Lindsey S
Edited by:
Lindsey S
Employee Jeff D
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Employee Kathleen M
Updated by:
Kathleen M
Employee Mike S
Updated by:
Mike S
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Written by:
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