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Repair Kit Fulton Wedge-Latch Cast Head Coupler

Repair Kit Fulton Wedge-Latch Cast Head Coupler

Item # F670801
Our Price: $45.01
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Shipping Weight: 1.16 lbs
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Repair kit contains all necessary components for your Fulton Wedge-Latch, cast-head coupler. Does not include housing. For 44125W and 44150W series couplers. 1-800-940-8924 to order Fulton accessories and parts part number F670801 or order online at Free expert support on all Fulton products. Great prices and Fastest Shipping for Repair Kit Fulton Wedge-Latch Cast Head Coupler. Accessories and Parts reviews from real customers.
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  • Reviews (13)
  • Q & A (0)
  • Videos (1)
  • Photos

Fulton Accessories and Parts - F670801

  • A-Frame Trailer Coupler
  • Coupler Repair
  • Fulton

Repair kit contains all necessary components for your Fulton Wedge-Latch, cast-head coupler. Does not include housing. For 44125W and 44150W series couplers.


  • Kit has any replacement part you may need to repair your coupler, excluding housing
  • Parts fit Fulton 44125W and 44150W series couplers

670801 Fulton Kit for 44125W and 44150W Wedge-Latch Coupler

California residents: click here

Video of Repair Kit Fulton Wedge-Latch Cast Head Coupler

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

Video Transcript for Fulton Wedge-Latch Cast Head Coupler Repair Kit Review

Today we'll be having a look at the Fulton Repair Kit for Fulton Wedge-Latch, Cast-Head Couplers. Part number F670801. Now, our coupler repair kit here is a very cost effective and simple solution, letting us replace all the critical moving parts on our coupler assembly that can become worn out or damaged. It's a lot cheaper than replacing your entire coupler assembly, which is typically welded onto your trailer. It saves you time, it saves you money, and it gets you back on the road quickly. Now, this coupler is off of a trailer right now so we can easily flip it over to manipulate and show you what's going on. Now, since this is a brand new couple and the rivet would have to be cut off, we won't be doing that, but we'll explain how everything works.

Right here on the side, you can see a rivet head. If you had an angle grinder or a cut off wheel, you could cut this out, draw your pin out and then that'll free up your pivot point here. That rivet that we removed, that's what our new bolt and nylon lock nut replaces. These are a half inch bolt and a half in nut. Now, we'll open this back up here.

If you see right through here, you can see the end of the roll pin. Once you drive that roll pin out with a center punch and hammer, that frees up your threaded rod assembly from your latch. Your latch assembly, right here, would lift straight up off your coupler, and that will leave you with your ball catch, your threaded rod, and your spring. In order to remove those, you'll take your coupler and flip it over. You would just pull that straight on out. We have your new threaded rod already threaded on.

You want to make sure that your pin hole here is threaded on so that it's horizontal like this, longways. Drop on your new spring, drive it back into the bottom. Flip your coupler back over. Your threaded rod will be sticking up through the coupler. Drop it on like so.

Drive your roll pin on through the threaded rod. Once you have that all the way through, you would secure it where the rivet was with the nut and the bolt right here. Then, you would have a functioning coupler again. That completes our look at the Fulton Repair Kit for Fulton Wedge-Latch, Cast-Head Couplers. Part number F670801.

Customer Satisfaction Score:

Customer Reviews

Repair Kit Fulton Wedge-Latch Cast Head Coupler - F670801

Average Customer Rating:  4.8 out of 5 stars   (13 Customer Reviews)

Repair kit contains all necessary components for your Fulton Wedge-Latch, cast-head coupler. Does not include housing. For 44125W and 44150W series couplers.


Helpful associate checking to confirm the fitment. Package delivered before expected and installed perfectly.

by: 12/27/2023

great people to work with could not be any happier with the time and service they took to help me be sure i got the right part


WoW.....where do I start???? George @ etrailer has been the best to work with.. the part that I ordered keep coming up as back ordered and the wait was LONG.. but nothing to do with etailer cause it was still in production so out of their hands...But I was keep in the loop at all times. Never just dropped cause it was a small order.. George treated me as if I had just spent a Million bucks..not just small amount that I had.. So if your in the market for any Trailer Parts shop etrailer First cause it will be the Last place you will need to shop...

VK Electric


The part was perfect the only issue was the delivery was not what was said it was going to be, if it did not show up when it did I would have asked fora return and gone another way with someone else


Works as it should. Easy to follow inst ructions.


I normally get local parts but they were all back ordered. etrailer had my part in stock and got It to me right away. I will be using them again.


fit perfectly


Exactly what I needed! Easy transaction and the Quickest Delivery Possible! I will refer to Everyone!


Works perfectly! Thanks Barry you were very helpful!


fair price, timely delivery





See what our Experts say about this Fulton Accessories and Parts

  • Replacement A-Frame Coupler Latch Differences
    The difference in the Repair Kit for Fulton A-Frame Coupler 2-5/16" Ball with Wedge-Latch part # F640801 and the Repair Kit Fulton Wedge-Latch Cast Head Coupler part # F670801 is what couplers they fit. Part number F640801 is designed for use with the standard F44305R0317 and F44305R0500 couplers and the F670801 is for use with the cast iron 44125W and 44150W series couplers
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  • Recommended Latch Repair Kit for Fulton Trailer Coupler 11250
    It sounds like you need a coupler latch repair kit for your 1-7/8-inch Fulton straight tongue coupler. I checked with my contact at Fulton about your coupler number 11250. According to my contact the correct coupler repair kit, part # 58-0801, is no longer available from Fulton. We no longer have any left here at etrailer. I have included a link to our main page for 1-7/8-inch straight tongue couplers so you can select a new one for your trailer. As an example, we offer Fulton coupler...
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  • Latch Repair Kit for Bulldog Cast Head Coupler 4420000317
    I spoke with my contact at Bulldog and he confirmed that for coupler # BD4420000317 you would use latch repair kit # F670801. This repair kit actually fits several makes and models of couplers from Fulton and Bulldog.
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  • Needing a Repair Kit for a Bulldog Trailer Coupler
    The coupler repair kit for the Bulldog Cast Head Coupler, # BD4425000317, is part # F670801.
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  • Latch Repair Kit for a Fulton Trailer Coupler
    The Coupler Repair Kit part # C25194 is designed for Curt trailer couplers that use a 2" hitch ball. Since you have a Fulton trailer coupler I cannot recommend you use this kit. Instead, I recommend taking a look at part # F670801 which is for 44125W and 44150W series couplers or part # F520801 which is for 308 series couplers. If you do not have either of these then the only option I have for you would be to replace the coupler as the repair kits are not universal. I have attached a list...
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  • Availability of Repair Kit for Older Fulton 1-7/8-Inch Trailer Coupler
    We do offer repair kits for Fulton and other brands of trailer couplers. These repair kits are confirmed based on the original coupler series number, which is usually stamped into the housing or printed on a sticker. For example, the Repair Kit for Fulton A-Frame Couplers with Wedge-Latch, part # F640801, fits their 44305R and 4431R series couplers. Repair Kit # F660801 fits their 43805W series couplers and kit # F670801 fits 44125W series couplers. If you cannot find a part or series...
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  • Can the Latch On An Old Trailer with Fulmer/Fultun Trailer Coupler Be Replaced
    I do have an option for you but we do not have a trailer coupler repair kit for your Fulmer/Fultun trailer coupler. I know these kits are convenient and cost saving but the fact of the matter is that they are not universal and will only work on very specific applications. I know this is not what you want to hear but if you want to be able to tow your trailer again you will need to cut the old trailer coupler off and bolt a new one on. I recommend the Demco A-Frame Trailer Coupler part...
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  • Repair Kit Fulton Wedge-Latch # F670801, Fits Fulton/Bulldog Couplers for 2-5/16 Inch Balls
    The Repair Kit Fulton Wedge-Latch Cast Head Coupler, # F670801, is designed to fit the coupler # BD44125W0317 which does take a 2-5/16 inch ball.
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  • Repair Kit for Fulton A-Frame Coupler with Trigger Latch
    We have a Fulton coupler repair kit with the part # F670801 that you'd want instead of the # CA-5100-RK which only fits the Ram brand of couplers.
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  • Replacement Latch for Fulton 14K Straight Tongue Coupler or Replacement Coupler
    We don't have a confirmed fit for your Fulton Coupler for a repair kit. The Latch Repair Kit # F670801 is the closest option we have and hasn't been tested with straight couplers so I can't confirm it will work. I recommend instead for a confirmed fit replacing your coupler with the Buyers Products Straight Tongue Trailer Coupler - Auto Latch - 2-5/16" Ball - Bolt On - 15K # 3370091562 which is the closest to your 14K or the Demco Channel Tongue Trailer Coupler - Zinc - 2-5/16" Ball...
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  • Latch Repair Kit For Bulldog A256 2-5/16" Ball Latch Coupler
    Per Bulldog the Repair Kit # F670801 is the correct replacement ball latch for their A256 Bulldog Cast Head Coupler # BDA256C0317.
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  • Which Couplers Do Repair Kits # F640801 and # F670801
    No they are not interchangable although they do look similar. The part # F640801 fits coupler part # F44305R0500 and then repair kit part # F670801 fits the part # BD44125W0317. Which coupler does your look like between the two?
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  • Replacement Coupler Options for a 1963 Boat Trailer With 1-7/8" Fulton Coupler
    The only Fulton coupler repair kits we carry are the # F670801 and # F640801 which are for much heavier duty couplers. Due to the age of your trailer you will most likely have to replace your coupler unless you can find the parts from a used coupler. I do see we have a few options depending on the width of the pole tongue on your trailer. We have a 2" # CT-2001-Z, 2-1/2" # CT-2002-Z or 3" # CT-2003-Z option. All of these are capable of bolting on to the tongue, have a 1-7/8" ball fitment...
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  • Is There A Repair Kit For The Trailer Coupler Latch on a Fulton 2" Ball Coupler?
    Fulton does not carry a repair kit for your 2" ball coupler. I recommend replacing your coupler with one easier to use like the Demco A-Frame Trailer Coupler # DM14793-81. This coupler can be bolted on and if the coupler latch wears our it can be replaced with the Repair Kit # DM6109. With this eZ-Latch system you only need to raise the handle to disconnect the trailer. This makes it much easier to just drop the trailer onto the ball and not add additional stress to the parts. I recommend...
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  • How To Find Replacement Trigger Latch For Coupler On a 2007 Zieman Boat Trailer
    Unfortunately, I have no way to see what coupler was installed on your 2007 Zeiman boat trailer. I recommend removing the latch assembly itself to see how it compares with the replacement latches from the list below. If you do not see one which matches please let me know so I can see if there is an replacement option or if you will need to replace your entire coupler. Curt Coupler Repair Kit # C25194 Demco Coupler Repair Kit for 2" Leverlock # DM5696 Demco Metal eZ-Latch Repair Kit #...
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  • Are There Replacement Parts for the A-Frame Trailer Coupler w/ Round Jack Hole CA-5280-RB
    I do have weld-on, a-frame trailer couplers in which replacement parts are available but the A-Frame Trailer Coupler w/ Round Jack Hole part # CA-5280-RB is not one of them. The Demco 50-Degree A-Frame Trailer Coupler part # 12660-97SP and Bulldog Heavy-Duty Cast Head Coupler part # BD44150W0317 both have replacement coupler repair kits, the Demco Composite eZ-Latch Repair Kit part # DM6008 and the Repair Kit Fulton Wedge-Latch Cast Head Coupler part # F670801. I recommend the Demco 50-Degree...
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Info for this part was:

Employee Michael H
Expert Research:
Michael H
Employee Adam R
Expert Research:
Adam R
Employee Wilson B
Updated by:
Wilson B
Employee Alexander C
Updated by:
Alexander C
Employee Carrie F
Updated by:
Carrie F
Employee Zach D
Video Edited:
Zach D
Employee Brent H
Installed by:
Brent H

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