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  1. Folding Trailer Tongue
  2. Fulton
  3. Coupler Hinge Kit
  4. 3 x 5 Inch Tongue
  5. 9000 lbs GTW
  6. Bolt-On
Fulton Fold-Away Coupler Hinge Kit for 3" x 5" Tongue - Bolt On - Up to 9,000 lbs

Fulton Fold-Away Coupler Hinge Kit for 3" x 5" Tongue - Bolt On - Up to 9,000 lbs

Our Price: $163.09
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Folding Trailer Tongue
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Shipping Weight: 14 lbs
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Use with actuators or standard couplers to create a foldaway tongue up to 48" long so that your trailer can be stored in even the smallest garage. Unique offset design guarantees superior performance. 1-800-940-8924 to order Fulton folding trailer tongue part number FHDPB350101 or order online at Free expert support on all Fulton products. Great prices and Fastest Shipping for Fulton Fold-Away Coupler Hinge Kit for 3" x 5" Tongue - Bolt On - Up to 9,000 lbs. Folding Trailer Tongue reviews from real customers.
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Fulton Folding Trailer Tongue

  • Coupler Hinge Kit
  • 3 x 5 Inch Tongue
  • Fulton
  • 9000 lbs GTW
  • Bolt-On
  • Up to 48 Inch Long

Use with actuators or standard couplers to create a foldaway tongue up to 48" long so that your trailer can be stored in even the smallest garage. Unique offset design guarantees superior performance.


  • Hinge kit lets you create up to a 48" foldaway tongue for your trailer
    • Designed to be used with actuators or standard couplers
  • Bolt-on installation
  • Sturdy steel construction
  • Corrosion-resistant, Z-max 600 zinc finish
  • Mounting hardware, pivot bolt and pivot pin and clip included
  • Not for use on aluminum trailer frames


  • Application: 3" x 5" trailer tongue
    • Trailer tongue material thickness must be between.188" and.120"
  • Capacity: up to 9,000 lbs (see table)
  • 5-Year limited warranty

Use the table below to determine your maximum pivot length based on your trailer capacity. Pivot length is the measurement from the center line of the coupler ball to the farthest pivot hole.


Hinge Kit Maximum Pivot Table

HDPB350101 Fulton High Performance Bolt-On, Fold-Away Hinge Kit for 3" x 5" Trailer Tongue

Item # FHDPB350101

Installation Details FHDPB350101 Installation instructions

California residents: click here

Customer Satisfaction Score:

Customer Reviews

Fulton Fold-Away Coupler Hinge Kit for 3" x 5" Tongue - Bolt On - Up to 9,000 lbs - FHDPB350101

Average Customer Rating:  4.8 out of 5 stars   (904 Customer Reviews)

Use with actuators or standard couplers to create a foldaway tongue up to 48" long so that your trailer can be stored in even the smallest garage. Unique offset design guarantees superior performance.


This is the second Fulton swing tongue I have installed on a boat trailer. I installed one on a 3x3 tongue about 10 yrs ago and have towed that boat between MI and FL each year with no issues. Installed the 3x5 model on a new boat trailer 2 days ago. This trailer tongue was much thicker steel and was more difficult to cut and drill. The only issue encountered was the corners of the interior channel of tongue were slightly rounded. The holes for the bolts were close to sides of tongue and nuts with built in washers did not want to seat flat against steel due to that. This was fixed by grinding off the washer part of nut on one side and putting that part against the tongue sidewall. It was just a little more work. They tongue hinges are great to enable you to put your boat on the garage and still walk around it. Highly recommended!


This was a must have for us to be able to fit our boat in the garage. I am very pleased with the results and how great of quality this product is. After one year still looks great, no signs of wearing off. etrailer knowledge and professional customer service made our purchase experience easy.


This is really going to save steps and my shins. It took 8 months to recieve this part due to being back ordered from the manufacturer. Installation took around 3 hours and other than drilling 16, 1/2" holes, was easy. The delivery company was brutal with the package delivery, the box was broke open and the hinge pin was left out when box was taped closed. Ed W. Jumped on replacing it without hesitation and it should be here soon. Thanks Ed and Bailey B. For being on top of things so professionally.


This is an excellent item that gives me an extra 2 feet in the garage which is a big deal in my cramped space. Straight forward installation was no problem just make sure your holes are drilled correctly. They do include a drill punch with the kit which makes marking the drill points a snap! Haven't towed yet but looks stout enough to have no problems. Thank you!


Customer service at etrailer is great. I had a problem with my order getting lost by UPS and etrailer took care of me. Also, great products!


Easy install, works great now boat fits in garage.


Good solid product for people who need it.. To bad you lose almost half the carry capacity by shorting the tongue...


This coupler works a designed. Installation was fairly easy. It did take apx 6 months to get it which is no fault of etrailer. There was an issue with shipping. It was shipped in the original factory box. That box apparently fell apart sometime during shipping and was reboxed by the freight company. Some hardware was missing when I received it. I was able to find the missing hardware locally at my expense.

Heather A.


I hate to hear you were missing hardware Dana! I sent your review over to customer service to assist you.


The Fulton Fold-Away Hinge Kit Folding Tongue which I purchased for my pontoon boat trailer was recommended by a local trailer supplier. My trailer tongue was three feet too long to fit into the storage unit I used for the trailer and I needed a way to shorten the trailer without making major changes. The Hinge Kit was the answer and the only difficult part was cutting the steel trailer tongue so that I could attach the hinge. I was very impressed with the kit and the way the instructions led me step by step with the installation.
The job took about four hours and the finished product allowed me to fold back the tongue once the trailer was in the storage unit without any difficulty.

Denny H.


It is working great and is exactly as described ... it allows me the extra room I need when I put the trailer into storage.


As usual with etrailer, service was excellent. The product too seems to be exactly what I need, but I won't be able to find out until spring when I pull the boat out of storage. Appears to be well built and should fit well. Roger



Product is excellent. Works great. Customer service is second to none !!!


Package was wrapped in packing tape due to parts of box flaps missing. Upon opening, less than half of contents were in the box. I called customer service to explain what I received. I needed the parts for a Labor Day weekend project, and had borrowed tools for the task. Was told by customer service that a replacement could not be shipped overnight, as they do not have that capability. I was told a complete replacement would be shipped, and I would receive it the following week. All at no additional charge, except I would need to use a return label, seal the torn box, and take to a UPS office for return shipment. No credit, discount, or incentive was mentioned, nor offered. Just wait until next week, rewrap torn box, and take time to deliver it to a UPS office. Horrible process and poor customer service. I would have offered some type of credit for my inconvenience, and have someone pick up the package instead of me having to take it to UPS.


Perfect for space needed. Heavy Duty!


Easy to install and works fantastic. I would recommend this to anyone needing to add a breakaway on boat trailer for space.


I have a 2012 Toyota Tundra and I recently bought a pre-owned Leer camper shell. I used this harness to wire up the third brake light. I also used the brake light module. This setup worked perfectly and resulted in a neat and clean professional installation. Thanks etrailer, you had everything I needed for a successful prefect installation.


I am extremely pleased with the service I received. It was easy and arrived on time
I highly recommend





This has made my boat trailer easier to park because I can back into garage and fold away but is also locks up better. I would do it again if I replaced my trailer


Using etrailer was very easy. Was my first time ordering from them. Greg was knowledgeable and very helpful. Most of all, I had been searching for a bolt-on foldable hitch for over a week with everybody either out of stock or projected 8-10 week lead times......etrailer had the part I was looking for in stock. Also, the part arrived a day earlier than projected. Overall, very good experience. Highly recommend using etrailer.


The kit was complete, easy to follow instructions. No more lifting and inserting removable old style tongue.


Install was easy, Now boat and trailer fit in garage, easy to swing into position, and swing back out of the way.


This is a great product. The extra room with the folding tongue, makes putting away the boat much simpler. When I was installing it, my cut on the tongue wasn't perfectly straight, but it was not a problem, the way the product is designed. I would recommend this over weld on conversions.


my boat is a tool for fishing . one problem with anything and it gets replaced. this product goes on all of my boat trailers.


Very impressed with product, excellent instruction included torx bit for installation and centering punch to mark holes, that was very thougtfull of Fulton. Used sawsall to cut 3x5 tounge on Shorelander trailer with very good success. The instant shipping from impressed me very much, Thank you, will order from again with out a second thought.


Good price and product was exactly as ordered. Great product, easy to install. Came with a center punch and a torx bithe. works great!


The swing hitch was everything I hoped for, and makes storing my boat so much easier.


Great rugged product. Installation not the easiest. would suggest making center punch long enough so you can punch bottom of tongue so it can be drilled from the top on the boat side of the tongue.
Reason for the unit is to make clearance so I can fit both boat and car under canopy.
Delivery was super fast, Thank You

Show More Reviews

See what our Experts say about this Fulton Folding Trailer Tongue

  • Can Fulton Foldaway Hinge Kit # FHDPB350101 Fit 3 by 4 inch Trailer Frame
    You could use the Fulton Fold-Away Coupler Hinge Kit for 3" x 5" Tongue # FHDPB350101 on a 3 inch by 4 inch trailer frame but you'd want to have 1/2 inch spacers welded to either side of the frame to take up the extra space.
    view full answer...
  • Swing-Away Tongue For Aluminum Trailer With Galvanized Steel Tongue
    For your aluminum trailer with a galvanized steel tongue (swing-away tongues cannot be used on aluminum tongues), you'll need a die-cast steel tongue with a zinc finish from Fulton. The correct fit is going to depend on the size of your trailer tongue, as well as the thickness of the material of your current tongue, which must have a thickness between 0.188" and 0.120". If your trailer tongue's material thickness meets that requirement you can choose from the following, based on your...
    view full answer...
  • Dimensions of Fulton Fold-Away Coupler Hinge Rubber Plug Kit
    We were able to find out the dimensions for you of the Fulton Fold-Away Coupler Hinge Rubber Plug Kit # F500705. Using digital calipers it measured 0.423 inches tall and its round base has a diameter that measured 0.426". These are designed to replace the rubber dampener plugs for the Fulton Fold-Away couplers: - Fulton Fold-Away Coupler Hinge Kit for 2" x 3" Trailer Tongue - Bolt On - Up to 5,000 lbs # FHDPB230101 - Fulton Fold-Away Coupler Hinge Kit for 2" x 3" Tongue - Weld On - Up...
    view full answer...
  • Can Fulton Fold-Away Hinge Kit be Used on Aluminum Trailer with Steel Tongue
    If the tongue portion of your trailer is steel then yes you can attach a hinge kit like the part # FHDPB330301 which is for 3 x 3 inch trailer tongues. Or the part # FHDPB350101 which is for 3 x 5 inch frames.
    view full answer...
  • Tongue Size on Fulton Fold-Away Trailer Coupler Hinge Kit, Part # FHDPB350101
    The Fulton Fold-Away Coupler Hinge Kit, part # FHDPB350101, is intended for use on steel (but not aluminum) boat trailers that have a tongue size of 3 x 5 inches. Yes, this is the internal dimension of the two coupler halves. When installed the two halves of your trailer tongue will each slide into one half of the coupler. I contacted Shorelandr and confirmed that your steel trailer PT2440T has a 3 x 5 tongue (about 78 inches in length); this will mate properly with the Fulton coupler....
    view full answer...
    Image 1 for
  • Attaching the Titan Hydraulic Brake Line When Using Fulton Fold-Away Coupler
    When using the Titan Hydraulic Brake Line # T0980100, there are fittings included to attach to your current brake line. One end of the brake line has a female fitting. This female fitting will attach to the male fitting on your brake line. You would need to coil the existing steel brake line in trailer frame behind where the Fold-Away Coupler # FHDPB350101, installs. So basically the Titan Line is adding an extension to your current brake line so the trailer tongue can fold. The other...
    view full answer...
    Image 1 for
  • Inside Dimensions of Fulton FHDPW330300 Fold-Away Trailer Coupler Hinge
    The Fulton # FHDPW330300 fold away coupler hinge is designed to slide over a 3 x 3 inch trailer tongue, so the inside dimension is just slightly larger than 3 x 3. To install, you'd cut the trailer tongue at the point where you'd like it to fold, slide the hinge over the tube and weld it into place. The hinges aren't intended for use on aluminum trailer frames. Fulton also makes bolt on hinges for a 3 x 4 tube, part # FHDPB340301 or 3 x 5 tubes, part # FHDPB350101. I've linked to a product...
    view full answer...
  • Length of Brake Line Hose Needed When Installing Fulton Fold-Away Coupler Hinge Kit, # FHDPB350101
    If your trailer has a surge brake coupler you will need to install a flexible brake line like the Titan Hydraulic Brake Line with Fittings - 25 inch Long, part # T0980100, inline with the couplers master cylinder and the original brake line so the tongue can fold without damaging the braking system. I have numerous sizes of flexible brake lines available and I have included a link to the available options. I would recommend to use the longest flexible brake line available, like the 25...
    view full answer...
  • Will Fulton Fold-Away Coupler Hinge Kit Work With Big Bubba Trailer With A-Frame And Straight Tongue
    The Fulton Fold-Away Coupler Hinge Kit for 3" x 5" Tongue part # FHDPB350101 will work with an A-Frame Big Bubba Deckover trailer with a straight tongue welded beneath it. As long as the straight tongue is a 3" x 5" trailer tongue with a material thickness between .188" and .120". Please take a look at the accompanying chart to determine the maximum pivot length allowable for your particular straight tongue. If your straight tongue is not 3"x5" I have attached a link to the available...
    view full answer...
    Image 1 for Image 2 for
  • Availability of Coupler Hinge Kit that Could Fit 2003 EZ Loader Trailer
    We do have coupler hinge kits available but what your 2003 EZ Loader trailer would need depends on the dimensions of your trailer's tongue. The part # FHDPB330301 is for 3 inch by 3 inch tongues, the part # FHDPB350101 is for 3 inch by 5 inch tongues, and part # FHDPB340301 is for 3 inch by 4 inch. So you'd have to measure your tongue to see which option would work best for you.
    view full answer...
  • How to Use Fulton Fold-Away Coupler Hinge Kit for 3 x 5 Tongue on 3 x 4 Tongue
    There isn't an option for a swing-away coupler on a 3" x 4" tongue, but you can still use the Fulton Fold-Away Coupler Hinge Kit for 3" x 5" Tongue # FHDPB350101. In order to use this kit on a 3" x 4" tongue, you would simply need to have 1/2" spacers welded to both sides of your trailer tongue. I have added a link below to a video review for you to check out as well of the Fulton Fold-Away Coupler Hinge Kit for 3" x 5" Tongue # FHDPB350101.
    view full answer...
  • Can a Fold-Away Coupler Hinge Kit Be Used To Extend A Trailer Tongue?
    Yes, you will be able to add the Fulton Fold-Away Coupler Hinge Kit to your boat trailer to gain some additional length out of the trailer. We have the hinge kit in different sizes to match your trailer tongue. It appears you will need the 3"X5" # FHDPB350101. We also have a 3"X4" # FHDPB340301 and 3"X3" # FHDPB330301. You will need to source the additional trailer tongue material from a local supplier in the length you are needing.
    view full answer...
    Image 1 for
  • Availability of 9000 lb Capacity Fulton Hinge Kit
    The only Fulton hinge kit we have that has a 9,000 lb capacity is the version that fits a 3 x 5 inch frame like the part # FHDPB350101.
    view full answer...
  • Which Side of the Trailer is the Pivot Bolt Installed On When Using a Fold-Away Coupler
    According to the instructions for the Fulton Fold-Away Coupler Hinge Kit part # FHDPB350101, the pivot bolt is installed on the left hand side of the fold-away and the hinge pin is installed on the right hand side of the fold-away. However, I do not believe it matters. If you wanted the tongue to swing to the left side then you would place the pivot bolt on the left side and vice versa for the right side.
    view full answer...
  • Flexible Brake Line for a Trailer with a Folding Tongue Coupler
    The Titan brake line # T0980100 is 25 inches long and should work for you since you are adding the reverse electric lock out. You will want the flexible line to be long enough to not bind or put stress on the rest of the brake lines when the coupler is folded in. It will need to go from the back of the master cylinder, or in this case back of the lockout solenoid, past the hinge.
    view full answer...
  • Are There Replacement Bushings for Fold-Away Coupler Hinge Kits
    I cannot speak for all fold-away coupler hinge kits but the ones we offer, the Fulton Fold-Away Coupler Hinge Kit part # FHDPB230101, part # FHDPB330301, and part # FHDPB350101 do not contain any bushings. It can be rather difficult to just look at a bolt or hinge pin and determine whether or not it has stretched or deformed but I would be willing to bet that is the issue you are having. The loose connection between these bolts and pins is a rather serious safety issue so I highly recommend...
    view full answer...
  • Replacement Fold Away Coupler Hinge Kit For Trailer
    Though we do not have any pivot pins that are 1/2 inch x 6 available we do have another option for you. The best option that we have would be to replace your coupler with one of our Fold-Away Coupler Hinge Kits. We have the following options: 3 inch x 5 inch Trailer Tongue: Fulton Fold-Away Coupler Hinge Kit # FHDPB350101 3 inch x 3 inch Trailer Tongue Fulton Fold-Away Coupler Hinge Kit # FHDPB330301 2 in x 3 inch Trailer Tongue Fulton Fold-Away Coupler Hinge Kit # FHDPB230101 All...
    view full answer...
  • Is There a Fold-Away Trailer Tongue Coupler Kit for a 3x4 Trailer Frame
    I do have a fold-away trailer tongue coupler kit that will work on a 3x4 trailer frame, the Fulton Fold-Away Coupler Hinge Kit part # FHDPB350101. That said, you will need to use shims/spacers to fill the rest of the gap. This is actually explained in the instructions and very common so no need to worry.
    view full answer...
  • Fulton Fold-Away Coupler for a 2 Inch x 4 Inch Trailer Tongue
    To put a Fold-Away coupler on your 2" x 4" trailer tongue you are going to need to modify your Tongue. There are no 2" x 4" options available. I recommend using the Fulton Fold-Away Coupler Hinge Kit for 3" x 5" Tongue item # FHDPB350101. This will accommodate the larger dimension your tongue has.
    view full answer...
  • Hinge Kit Recommendation for a Shorelandr Trailer with Surge Brakes
    For a 3x5 trailer tongue, I'd recommend the Fulton # FHDPB350101 coupler hinge kit. Keep in mind that this hinge isn't for use with aluminum trailer frames. You'll also need to install a piece of flex brake line like the # T0777300 that you referenced. I've linked you to a video that contains more information about the hinge.
    view full answer...
  • Fulton Fold-Away Hinge Kit Recommendation for a Trailer Carrying a 1800 lb Pontoon Boat
    There are a couple factors you need to consider when determining what the maximum pivot length you could use on your trailer. You will need to consider the gross vehicle weight of your trailer as well as the maximum tongue weight that the trailer will see. The reason you will need to consider these factors is because the more of the tongue that is beyond the folded portion of the Fulton Fold-Away Hinge Kit the more leverage the weight of the trailer will have on the hinge and the easier...
    view full answer...
    Image 1 for
  • Fold Away Tongue Bracket for 3" x 4" Tongue
    The Zinc Plated Fulton Fold-Away Coupler Hinge Kit for 3" x 5" Tongue - Bolt On - Up to 9,000 lbs # FHDPB350101 is the only option we have for your 3 x 4 inch tongue. You would need to install 1/2 inch spacers on the top and bottom of each half of the tongue to give you the support needed to be compatible with this hinge and 1/2" longer bolts will be required. I've included a link to the page and a video my buddy Rob did on it here at etrailer for you to check out.
    view full answer...
  • What Size Fold-Away Coupler Hinge Kits Are Available?
    I am sorry to say that we do not have a Fold-Away Coupler Hinge Kit for a 4" x 4" tongue. We currently offer Hinge Kits in the following sizes: 2" x 3" Tongue # FHDPB230101 3" x 3" Tongue # FHDPB330301 3" x 4" Tongue # FHDPB340301 3" x 5" Tongue # FHDPB350101
    view full answer...
  • Dimensions of Fulton Fold Away Coupler part # FHDPB350101
    I went out into our warehouse and measured a Fulton Fold Away Coupler part # FHDPB350101 and found that it is 7-1/2 inches in length. From the center of the hinge pins it measures 3 inches to the closer end of the hinge and then 4-1/2 inches to the other side. The overall width of the kit is 6-1/8 inches.
    view full answer...

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