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Ultra-Fab Power Twin II Electric Stabilizer for Trailers and RVs - 22" Lift - 6,000 lbs

Ultra-Fab Power Twin II Electric Stabilizer for Trailers and RVs - 22" Lift - 6,000 lbs

Item # UF39-941707
Our Price: $1,139.05
Camper Jacks
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It's never been easier to raise, level and stabilize your travel or 5th-wheel trailer. This electric stabilizer spans the width of your rig for maximum support and has dual, 12V motors that function independently for quick, simple leveling. 1-800-940-8924 to order Ultra-Fab Products camper jacks part number UF39-941707 or order online at Free expert support on all Ultra-Fab Products products. Great prices and Fastest Shipping for Ultra-Fab Power Twin II Electric Stabilizer for Trailers and RVs - 22" Lift - 6,000 lbs. Camper Jacks reviews from real customers.
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  • Reviews (85)
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Ultra-Fab Products Camper Jacks - UF39-941707

  • Fifth Wheel Camper
  • Travel Trailer
  • Leveling Jacks
  • Stabilizer Jacks
  • Electric Jack
  • 5001 - 6000 lbs
  • 1 Jack
  • 22 Inch Lift
  • Ultra-Fab Products
  • Bolt-On
  • Steel

It's never been easier to raise, level and stabilize your travel or 5th-wheel trailer. This electric stabilizer spans the width of your rig for maximum support and has dual, 12V motors that function independently for quick, simple leveling.


  • Cross-frame-mount jack stops front-to-back and side-to-side motion of travel or 5th-wheel trailer
    • Provides support across the width of your motor home or trailer
    • Stabilizes with wide side support brackets
    • For use on rear frame of pulled travel trailer
      • Not recommended for use on front of motorized vehicle
  • Dual, 12V motors operate independently of one another for simple, effective leveling
  • Connecting bracket holds sides of stabilizer together and provides additional support
    • Adjusts to fit the width of your trailer or RV
  • Extra-large footplates help to minimize sinking and tilting
  • Switches and emergency hand crank included
    • Switch harness has 10-gauge wires
  • Sturdy steel construction


  • Application: trailers and RVs with frames from 42" to 77" wide
    • Requires 24" of space on the frame of your trailer or RV
  • Lift: 22"
  • Weight capacity: 6,000 lbs
  • 3-Year warranty

Dimension of mounting bracket

39-941707 UltraFab PT II Electric Stabilizer - 22"

Installation Details UF39-941707 Installation instructions

Customer Satisfaction Score:

Customer Reviews

Ultra-Fab Power Twin II Electric Stabilizer for Trailers and RVs - 22" Lift - 6,000 lbs - UF39-941707

Average Customer Rating:  4.5 out of 5 stars   (85 Customer Reviews)

It's never been easier to raise, level and stabilize your travel or 5th-wheel trailer. This electric stabilizer spans the width of your rig for maximum support and has dual, 12V motors that function independently for quick, simple leveling.


These jacks are quality built and held up for a 3 month trip to Alaska. I choose to weld the two halves together to minimize the offset. The heavy material made it easy and very sturdy. The system is powerful enough to lift rear of our RV unit partially off the ground but you need to be careful to support the axles so you don't twist the frame on light trailers.


Very pleased. Not that hard to install. These replace the weak stabilizers that came with the trailer. You'll need a jack and an electrical kit to complete the install.



Still working just fine, Ive suggested it to anyone who askes about it.


I ordered 2 of these units. I give UPS 1 star because they lost an entire unit so I called etrailer and I give them 5 stars for immediately shipping a third unit. Then the first unit arrived from UPS and they lost the motors and hardware kit. I called etrailer and they are shipping more motors and the hardware kit. Hoping UPS doesn’t lose the parts for the replacements! The photo shows all I received so far for two full kits.


Installed on a 2018 E350 Ford Minnie Winnie. The package arrived really beat up but only a single cover was damaged. It was replaced quickly. Nothing was missing.

I had to shim it down from the frame about 1.5 inches using a bar of 1.5"x3"x 24" inch aluminum stock on each side. Then it would clear the fuel tank and the gray water.

Switches are installed in our garage under the bed. Wiring came from power panel which is fairly close to the switches so it all went fairly well. Wire nuts are not recommended so I had to hunt around to find connectors that would work.

I have not used it for camping so do not how well it will work to stabilize the vehicle. We do a lot of boon docking so will have to have some good blocking to level and stabilize. It feels a little better sitting on the street. I do wish there was a lockout for them being raised before moving the vehicle outside of PARK?



After a year of use, they make a huge difference when parked overnight.


I got the jack for three reasons. My original jack was intermittent, it was bent and it did not level the trailer because it had only one motor. The new jack works great and it can level the trailer because it has two motors and the power required. It was not the easiest to install because of the increased size and it will not level the trailer if it is off more that 2 inches or so side to side. In spite of these drawbacks and the fact it added weight to the rear of the trailer I am very happy with the new jack.



Good. Only issue I have is it is slower than my old jack


Your going to love this product. I was able to fit on to a 1987 Avion travel trailer I renovated for my sister (spectacular renovation). It made the camper rock solid. You can't feel anybody walking around, no high wind movement. It felt like we set it on a concrete foundation. It is a well designed product I will use in the future if I renovate another classic beauty, even my own every day travel trailer.

Great product.



Excellent product


Scary at first, but following directions, it bolted right onto the frame, used a floor jack to hold it in place while attaching. Wiring was uncomplicated, except for figuring out where to route the wires. works fine, I am a happy camper!

Glenn F.


still works great.


I was very satisfied with the excellent service I received. Rose was very helpful. Box was a little tattered but all parts were intact. I installed stabilizers and they work as expected .Very easy to install as I did them myself



They are working great just as u expected very good product. Would recommend to anyone. Thanks Again to Rose for her help


i find these easy to operate. installation took a little time as i had to works underneath the camper. i have discovered, the middle of the jacks flex when leveling. i have some heavy angle iron, i am going to reinforce them. before i do that operation, i am going to add more bolts, that may be the simple solution.

overall, excellent product.


Installation was easy, need a helper just to make it safer. CSR people are great very helpful!! Works as promoted and I have recommended this product to other campers.

James F.


Well after 1 year of use the Jacks are still doing very well we have gone on at least a dozen trips that they have been utilized. I am very glad to have purchase them, the installation was very easy great videos!! Best Regards P.S I have recommended to other campers and have even assisted on installing them.


On my 5 whl the landing gears froze up and would not turn either way. I ordered LC179013 and installed myself. That was s good job for an old 70Yrs fat man to do..
I got them installed and wired up and they work like a champ. That has been over a year ago and have been used alot.


I purchased 4 sets of these for 2 trailers. One motor intermittently will not run unless I remove the cover and turn it by hand. It occurred immediately after installation. Should have returned it.


The product itself is a good product but the packaging for shipment is very bad. I received mine and the box was badly torn apart and tapped back together. I was missing multiple pieces and had to wait until the replacement pieces arrived. Customer service was very helpful with resolving this problem within minutes.


Exact replacement of what was on the Carrilite 5'er with both products, the levelers and the front landing gear.
Fast efficient service as usual!


The product does what we needed it to d o.



Finally got around to installing my PT II Stabilizers 30" front and rear of our 26' Surveyor. Pre - assembled them to make sure they went together ok. Luckily I had two sources for power front & rear which made wiring easy, I used a Buss block to make all positive connections, grounds straight to frame, soldered all connections and heat srinked to seal. Using the 3/8" self tappers was fun.Well got it all together and all works well makes trailer very stable, don't have to worry about scissor jacks collapsing anymore.


It looks like a great product am anxious to install them.
I have a symbol of them in my garage and I have one with a really crooked foot. The bolt hole on the retracting arm was drilled in the wrong place so it is totally crooked, not a deal breaker though. I’m sure the are more than Adequate


I finished the assembly and install of the power twin II stabilizer and have included pictures of the install. This is a good quality unit and I am very happy with how it works.



Would have been nice to know that it didn't fit my Grand Design Imagine 22MLE without some "frame modifications", and over $xxxx in installation costs.


Electric motors are very slow, seems like it takes forever to drop each foot.

BUT----------They do work.


After installation the stability or my toy hauler was increased X3. The installation was relatively easy and all that was needed was common tools and a floor jack. Wiring was covered by simple easy to follow instruction. Some shrink wrap and a solder gun make permanent water resistant connections which I recommend.


If you are looking for "stabilizers" that are strong enough to handle heavy trailers this is the unit for you. A little inconvenient because of the independent screws but they will lift the weight indicated which is why the stabilizers are in quotations.


Little intimidating at first, just took my time and it went together without any major problem. The problem that I had was dealt with quickly. It's solid and well built. Print on the instructions was a little small for my eyes. Having the instructions on line was a great help.


The Jacks are considerably more durable well built compared to the Lippert models. The lifting power is real and once on the ground the prevent movement of the RV by orders of magnitude over the other style jacks. I only have one in the center of a long trailer and it has stopped the bouncing and side to side swaying of the trailer. Just stepping onto the stairs to get in its rock solid. Also when all the legs are deployed the doors close way better than they ever had with just the Lippert jacks on the front and back. Definitely recommend to anyone thinking about a better jack than what's provided oem.


This product is awesome and has made a substantial difference in the stability of our camper! We have a 32' travel trailer and the factory jacks are sad and could feel every movement of the kids. This has taken away 90% of the movement that we were having before.
If you are not handy plan on having someone install this for you. It's not hard to do but if you don't have some tools for the job you will struggle. It took about 4 hours total to install.

Show More Reviews

See what our Experts say about this Ultra-Fab Products Camper Jacks

  • Recommended Electric Stabilizer for 2008 Ford E-450 Sunseeker
    When measuring the frame width of your 2008 Ford E-450 Sunseeker, you will measure from the outside of the frame. Since you measured an outside width of 42 inches on your Sunseeker, the Ultra-Fab Power Twin II Electric Stabilizer # UF39-941707 referenced in your question should work great. Please also keep in mind that 24 inches of space is required on the frame of your RV for it to install properly. This stabilizer will help to stop the front-to-back and side-to-side motion on your RV....
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  • Can Ultra-Fab Power Twin II Electric Stabilizer # UF39-941707 Separate Into Two Parts
    The Ultra-Fab Power Twin II Electric Stabilizer # UF39-941707 is a dual-motor stabilizer intended to operate as a single unit mounted at the front of a travel trailer to level and stabilize up to its 6000-lb capacity. This will work on trailers with outside-to-outside frame dimensions from 42- to 77-inches including a C-channel frame. Individually-controllable motors mean you can easily correct for uneven surfaces. Please take a look at the linked video for more information.
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  • How to Tell if Ultra-Fab Power Twin II Electric Stabilizer Will Fit a Class A Motorhome
    The Ultra-Fab Power Twin II Electric Stabilizer # UF39-941707 was designed more for travel trailers and 5th wheels but this is a universal application so as long as the frame of your 1996 Fleetwood Flair Class A is within the 42" to 77" wide range, you have at least 24" of space on the frame for the brackets, and there is room for this unit to fit under your motorhome then you'll be just fine. For universal-type applications like this you have to do the measuring on your end as every installation...
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  • Leveling Jack for Motorhome
    To add a new leveling jack to your 2008 Tiffin Phaeton I recommend checking out the Ultra-Fab Power Twin II Electric Stabilizer # UF39-941707 which will work on the rear of your Phaeton so long as it has a frame that is between 42" and 77"; it also require 24" of space on the frame of your motorhome. This has a pair of 12V motors that level independently of each other and has a 6,000 lb weight capacity. For a manual option there is the Ultra-Fab Ultra Scissor Jacks # UF48-979002, which...
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  • Will Lippert High-Speed Power Stabilizer Jack Work on Motorhome
    The Lippert High-Speed Power Stabilizer Jack, # LC298707 and # LC369774 are not intended for use on motorhomes. However, you can try using it but you may find ground clearance to an issue. In addition, this has very specific mounting hole spacing on the frame of 68-11/16" from center-hole to center-hole. An option with a much better chance of working is the Ultra-Fab Power Twin II Electric Stabilizer. These can be used on motorhomes and the correct one will depend on the lift you need...
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  • Recommended Stabilizer Jacks For 5th Wheel With Auto Leveling System
    The Ultra-Fab 5th Wheel King Pin Tripod Stabilizer - Steel - 37" to 50" - 5,000 lbs # UF19-950001 are great for taking away the bounce/sway and can be used with your auto-leveling 5th wheel especially the bounce in the space over the king pin. The auto-leveling jacks are great for making your system level, but are not any different in stabilizing than any other jacks. The nice feature is that stabilizing is easy once level because it is simply adding support to remain level. If you...
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  • Reducing Movement in a 5th Wheel Trailer While Parked
    Movement is normal when it isn't controlled. But when stabilization products are used then the movement can be reduced if not eliminated. You mentioned that you have tried things to correct this problem but did not mention what those things were so some of my recommendations may be something you have already tried. First we have to determine the nature of the movement. Is it side to side, front to back, or both? The front to back movement can result from slight movement at the trailer...
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  • Will Ultra-Fab Power Twin II Electric Stabilizer Work With 2010 Keystone Cougar MKS 323 fifth Wheel
    The Ultra-Fab Power Twin II Electric Stabilizer, part # UF39-941707 is designed for trailers with frames from 42 to 77 inches wide. The stabilizer has a 22-inch lift and has a weight capacity of 6,000-lbs. You do need 24 inches of open space under your trailer to make sure it will install. An emergency hand crank is included.
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  • Replacement Stabilizer Jack for 2015 Dutchmen Voltage Epic V3005 Toy Hauler
    I reviewed online specs for your Dutchmen Voltage V3005 5th wheel toy hauler and these show it will have a powered front stabilizer in addition to its front landing gear jacks. Examples of front electric stabilizers are # UF39-941705 (with 30-inch lift) or # UF39-941707 (with 22-inch lift). An example of electric landing gear is # UF17-943010. If the trailer has a multi-jack leveling system like the Ground Control 3.0 # LC358590 we do offer replacements for specific legs, such as the Right...
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  • Choosing Between Ultra-Fab Power Twin II Electric Trailer Stabilizer With 22 or 30 Inch Lift
    The # UF39-941707 would only provide you with 2 inches of lift. If you wanted to carry some blocking with you to provide additional lift should you need it, this unit would work for you. However, since the # UF39-941705 with a 30 inch lift (which would provide a net gain of 10 inches) is the same price, there's no reason not to go with the additional lift if you should ever need it. Either stabilizer would be compatible with your 70 inch frame width.
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  • How to Determine if the Ultra-Fab Power Twin II Electric Stabilizer # UF39-941707 will fit Trailer
    The Ultra-Fab Power Twin II Electric Stabilizer # UF39-941707 that you referenced can fit trailer frames that are between 42 and 77 inches apart measured from the outsides. If you measure your trailer frame and it falls in that range this would work well for you. This would definitely help save your back some strain as it would allow you to stabilize your trailer by just activating the motors. I attached a review video for you to check out as well.
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  • Can Ultra-Fab Power Electric Stabilizer # UF39-941707 Be Disconnected and Used as Separate Parts
    The Ultra-Fab Power Twin II Electric Stabilizer # UF39-941707 is a dual-motor stabilizer intended to operate as a single unit. If installed as separate halves without the center support it would not be able to deliver its intended performance and could be damaged in use. That center support in some applications may need to be bolted to your trailer frame as noted in the linked instructions.
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  • Lifting Capacity and Motor Specs of the Lippert Components High-Speed Power Stabilizer Jack
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  • Difference Between # UF39-941705 And # UF39-941707 Ultra-Fab Stabilizer Jacks
    The lift capacity and strength is the same for either of the power stabilizers you referenced. They both have dual motors which operate independently, making it easier to level the motorhome or trailer. The difference is the lift distance and what size trailer they will fit. The Ultra-Fab Power Twin II Electric Stabilizer, part # UF39-941707, has a 22 inch lift capacity and is designed to fit trailers with a frame with between 42 and 77 inches. The Ultra-Fab Power Twin II Electric Stabilizer...
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  • Are the Switches of the Ultra-Fab Power Twin II Electric Stabilizer # UF39-941707 Waterproof
    The switches of the Ultra-Fab Power Twin II Electric Stabilizer # UF39-941707 are considered weather resistant meaning that as long as you don't submerge them under water they will hold up just fine under normal rain/snow situations.
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  • How Does the Ultra-Fab Frame-Mount Stabilizer Jack Install on a Trailer
    Ultra-Fab Stabilizer Jack # UF39-941707 will bolt onto a trailer using the bolt holes that are present on the mounting flanges of this jack as well as with the included nuts and bolts. You will most likely have to drill holes in the frame of your trailer so that you can install this jack. Check out the picture I attached that shows the mounting flange up close.
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    Image 1 for
  • Will Ultra-Fab Stabilizer Jack, # UF39-941707 Fit on a 1971 Airstream Trailer
    As long as the frame on your Airstream is between 42 and 77 inches wide and is rated for use with this type of jack, then Stabilizer Jack # UF39-941707 will work. The 16 or 17 inches from the ground to the frame is within the limits of this jack. It will go up to 22 inches between the ground and frame but no higher.
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  • Replacement Gear Motor for Ultra-Fab Trailer Jack
    For a replacement motor and gearbox for your Ultra-Fab powered 5th wheel jack you can use part # UF39-750009 if you have either stabilizer model # UF39-941705 or # UF39-941707. All Ultra-Fab parts are displayed on the linked page.
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  • Should Ultra-Fab Power Twin II Electric Stabilizer be Used at Front & Back of Small Trailer
    I checked with the manufacturer, Ultra-Fab, and the Ultra-Fab Power Twin II Electric Stabilizer for Trailers and RVs - 22" Lift - 6,000 lbs # UF39-941707 is only recommended for the rear of a travel trailer. It would really be overkill for both the front and rear of your travel trailer to utilize the Power Twin II Electric Stabilizer # UF39-941707. For stabilizer jacks at the front you can use the Leveling Scissor Jack Set # JSC-24.
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  • 30 Amp Slow-Blow Fuses For Ultra-Fab Power Twin II Electric Stabilizer
    We do offer the 30 amp slow blow fuses for the Ultra-Fab Power Twin ll Stabilizer Jack, part # UF39-941707. The fuses are part # UF17-101066, and are sold individually. These fit into the inline fuse holder, part # UF17-101265.
    view full answer...

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