Product Description
Demco eZ-Latch Gooseneck Coupler – Set It On The Ball. It Latches Itself.
4″ SQUARE INNER TUBE – 30K, 2-5/16″ Ball – Fits BigTex Square Gooseneck – New Take-Off
No more climbing into the truck bed. Drop the coupler onto your 2-5/16″ ball, and the eZ-Latch closes and locks on contact. Lift the handle to uncouple. The dished socket means you only have to get close to the ball, not center it perfectly.
New Take-Off – What That Means
- Comes off a brand-new gooseneck trailer at our dealership because a customer switched to a kingpin or shock-absorbing coupler.
- The trailer was never towed down the road
- Expect scuff marks and small paint chips from lot handling — cosmetic only
- Mechanically new, never used, perfect working condition
- Well below the price of a new one
Key Features
- Automatic eZ-Latch – Couples and locks the moment it contacts the ball
- Dished Ball Socket – Guides itself onto the ball
- 30,000 lb. Gross Trailer Weight – Equipment, livestock, heavy hauling
- 8-1/4″ Height Adjustment – Four pin positions to level your trailer
- One-Motion Release – Lift the composite handle
- Exceeds SAE J684 – No separate safety pin required
- Steel and Cast Construction – Yellow powder coat
- Made in the USA
Outer tube not included.
Specifications
- Inner tube: 4″ square
- Overall length: 28-1/2″
- Ball size: 2-5/16″
- Gross trailer weight: 30,000 lb.
- Adjustment holes: 4, 13/16″ diameter
- Hole spacing: 2-3/4″ on center
- Total adjustment: 8-1/4″
- Bottom to first hole: 10-3/4″
- Weight: 38 lb. 3 oz.
- Finish: Yellow powder coat
- Latch: Demco eZ-Latch, composite handle
- Origin: Made in USA
MODEL: Demco eZ-Latch Gooseneck Coupler, Square Inner Tube
MANUFACTURER PART NUMBER: 17839-81
ALTERNATE ITEM NUMBER: 17839-44
Safe On Gooseneck Dump Trailers
- The ball carries the trailer’s weight, not the latch
- Stays engaged under both push and pull as the trailer angle changes through a dump cycle
- The latch retains the coupler on the ball; it is not a load-bearing pin
Before You Order – Measure Your Outer Tube
Replaces the inner tube only. The outer tube welded to your trailer stays put. Check these first:
- Square tube only. Round inner tube is a different part and will not fit.
- Outer tube should measure 4-1/2″ O.D. with 4″ I.D.
- Pin holes must be straight, not angled. Angled holes leave the latch crooked.
- Hole spacing 2-3/4″ on center, 13/16″ diameter.
- Bottom edge of coupler to center of first hole: 10-3/4″
Big Tex Square Gooseneck Fitment
Commonly found on Big Tex gooseneck trailers — which is why these are yellow rather than the black version sold through retail.
Not limited to Big Tex. Any trailer with a 4″ square gooseneck inner tube and straight pin holes on 2-3/4″ centers is a candidate. Fitment is determined by your tube dimensions, not your trailer’s nameplate.
Not sure? Call 717-369-8733 with your measurements and we’ll confirm fitment.
