1. Adjustable Trailer Coupler
  2. Titan
  3. 2-5/16 Inch Ball Coupler
  4. Coupler Only
  5. 21000 lbs GTW
  6. Trigger Latch
Titan Bolt-On Coupler for 2 5/16" Ball - Primed - 21K

Titan Bolt-On Coupler for 2 5/16" Ball - Primed - 21K

Item # T4855300
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Adjustable Trailer Coupler
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Shipping Weight: 14 lbs
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T4855300 - 21000 lbs GTW Titan Adjustable Trailer Coupler
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Ball coupler is made of sturdy steel. Adjustable channel bracket is sold separately. Mounting hardware is included. Call 800-298-8924 to order Titan adjustable trailer coupler part number T4855300 or order online at etrailer.com. Free expert support on all Titan products. Guaranteed Lowest Price and Fastest Shipping for Titan Bolt-On Coupler for 2 5/16" Ball - Primed - 21K. Adjustable Trailer Coupler reviews from real customers.
  • All Info
  • Reviews (10)
  • Q & A (8)
  • Videos (1)
  • Photos
  • Why etrailer?

Titan Adjustable Trailer Coupler - T4855300

  • 2-5/16 Inch Ball Coupler
  • Coupler Only
  • 21000 lbs GTW
  • Titan
  • Trigger Latch

Ball coupler is made of sturdy steel. Adjustable channel bracket is sold separately. Mounting hardware is included.


  • Ball coupler lets you hook up your trailer to your tow vehicle
    • Provides connection point for hitch ball
  • Adjustable channel mount lets you change coupler's height depending on application
    • Channel bracket sold separately
    • 3 Grade 8 mounting bolts and nuts included
  • Primed finish


  • Application: 3" channel bracket
    • Designed for triple 7,000-lb axles
  • Ball size: 2-5/16"
  • Weight capacity: 21,000 lbs
  • Distance between mounting channels:
    • 3-3/4" Inside to inside
    • 4-1/2" Outside to outside
  • Distance between mounting holes center to center: 2"
  • Diameter of lock pin hole: 5/16"
    • Minimum span needed for pin or coupler lock: 7/8"

Mounting Dimensions

4855300042 Titan Bolt-On Coupler for 2 5/16" Ball - 21K

Replaces 4855300

Video of Titan Bolt-On Coupler for 2 5/16" Ball - Primed - 21K

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

Video Transcript for Titan Adjustable Trailer Coupler - Coupler Only - T4855300 Review

Today we're going to be taking a look at the Titan Bolt-On Coupler for 2 5/16" hitch ball. This ball coupler lets you hook up your trailer to your towed vehicle. It's going to provide the connection point for your hitch ball. Now this is an adjustable channel mount design that's going to let you change the couplers height depending on your application. The channel bracket that would work with this unit is sold separately. It does come with three grade eight mounting bolts and nuts so those are included. A nice protective finishing on the hardware so that way you don't have to worry about rust or corrosion.

These bolts measure about 6" long from the bottom of the bolt head to the end of the bolt, and they have a diameter of 5/8". The unit itself, this coupler is made from a very strong and durable steel construction. You can see that it features a really nice, black finish on it. That's going to protect it from rust and corrosion. This is designed for a 3" wide channel bracket. While a lot of accessories will actually fit inside of a channel bracket, this one will fit around the outside the channel bracket.

We can tell that because of the measurements that it gives. If we take a measurement outside edge to outside edge, so outer width we're looking at about 4 1/2". Inner width is going to be 3 3/4". Now this is designed for triple 7,000 pound axles. Again, it's going to accept a 2 5/16" hitch ball.

Weight capacity on the unit is 21,000 pounds. The distance between these mounting holes, on center, those are going to be separated on center by 2". The unit's very easy to operate. You can see here it's got this latch mechanism. It's got a nice, easy-grip design. You just place a finger through there, lift that up.

That's in the open position. That opens the coupler to drop over the 2 5/16" hitch ball. Once it's over the ball you simply just bring this unit back down. Make sure that it engages. It does have a pin hole right here, located on each side, so that way you could pass through a coupler lock, or a coupler pin. Those items are not included. A few measurements I can give you though to help determine which one would work for you, the span on that coupler pin, or coupler pin and lock needs to at least be 7/8". That's the width measurement from this side to this side. It looks like this one right here, if we take a diameter measurement of that, I'm going to start on the one right there, just makes it easier. That's going to give us a measurement of 5 1/16". That's the diameter of the hole. Again, that hole's designed for a coupler pin and clip, or a coupler pin and lock. That just adds more security to the connection, and it also helps lock the socket in the down position when it's not connected to a ball. That's going to do it for today's look at the Titan Bolt-On Coupler for 2 5/16" hitch ball.

Customer Reviews

Titan Bolt-On Coupler for 2 5/16" Ball - Primed - 21K - T4855300

Average Customer Rating:  4.3 out of 5 stars   (10 Customer Reviews)

Ball coupler is made of sturdy steel. Adjustable channel bracket is sold separately. Mounting hardware is included.

- T4855300

Replace a coupler that was held on with 2 bolts after 1 bolt failed. Love the security and strength this one has with 3 bolts. Have had issues with couple not releasing from the ball. Gets stuck in the locked position. 656898

- T4855300

I just installed it. Awesome. Perfect fit and very well built. 643511

- T4855300

Good hitch. Shipped fast 639957

- T4855300

Hitch is what i expected, Fit in perfec t. 548581

- T4855300

I would not buy this again (T4855300). I took it off my trailer. I give etrailer 5 stars. 516201

- T4855300

Works well and is very heavy duty. 373208

- T4855300

Completely satisfied and extremely grateful for this item. Very strongly built. We use it on our 3 axle trailer hauling feed for our farm animals. 294592

- T4855300

arrived on time ez install 400 mi. trip to ny all good 268402

Barry R - 07/07/2017


- T4855300

Well built heavy duty product. Will be a huge improvement over the chinese coupler that come on my new dump trailer. Also plan on installing one on my tag trailer. Great price and also super fast shipping I will certainly use etrailer again 241331

Same issues as the elcheapo chinese couplers. When you have to use prybars and set the trailer brakes and rock the truck back and forth to break the couple free its a real pain. I have went back to pintle hitches.
tim j - 03/22/2017


- T4855300



Ask the Experts about this Titan Adjustable Trailer Coupler

  • Replacement Adjustable 2-5/16 Coupler Rated for a 21,000 GVWR Trailer
    We do have a very similar replacement coupler that is rated for 21,000 GVWR, and it is the Titan Bolt-On Coupler # T4855300. The angle that your photo was taken I can not tell if it is a 2 or 3 hole adjustable coupler, but this Titan part is a 3 hole adjustable, 2-5/16 coupler that is rated for 21,000 pounds. This coupler fits 3-1/2 inch wide trailer tongue channels with 4 or 6 hole leveler channels. This assembly includes the coupler that has a primed finish, 3 Grade 8 bolts that...
    view full answer...
  • What Does Titan Bolt-On, Straight Tongue Coupler # T4855300 Look Like
    I have included a picture here of what the Titan Bolt-On, Straight Tongue Coupler # T4855300 looks like.
    view full answer...
  • Coupler Repair Kit Recommendation for a Titan Bolt-On Coupler # T4855300
    Yes it is, you would want the Repair Kit for Titan Couplers # T1848700 to replace the locking mechanism of your Titan Bolt-On Coupler # T4855300.
    view full answer...
  • Recommendation for 2 Inch Ball, Bolt-On Trailer Coupler
    I have a solution for you, but Titan does not offer their Bolt-On Coupler for 2-5/16 Inch Ball # T4855300 in a 2 inch hitch ball design. For a bolt-on trailer coupler with a trigger latch, designed for a 2 inch ball I recommend the Demco Trailer Coupler, Adjustable Channel Mount, # DM12688-95. This coupler will mount in a 3 inch channel, like # DM59601, and has a weight capacity of 12,500 pounds. This is the highest capacity adjustable mount coupler we offer for a 2 inch hitch ball....
    view full answer...
  • Trailer Coupler Recommendation for 16k Trailer
    Trailer couplers are not rated for tongue weight capacity. They are rated for Gross trailer weight, as long as the gross trailer weight is within the capacity of the coupler, the coupler is installed properly and the trailer is designed properly, the coupler will handle the tongue weight of the trailer. Proper installation of the coupler is the key to it handling the weight it is rated for and the manufacturers directions should be followed explicitly. For a 16k trailer the part # T4855300...
    view full answer...
  • Mounting Bolt Dimensions of Titan Bolt-On Coupler
    The Titan Bolt-On Coupler # T4855300 uses Grade 8 bolts that measure 6" long and have a 5/8" diameter, as you can see in the accompanying photo. This coupler has a 21,000 lb capacity, with a distance between mounting holes of 2" center to center. It is designed to be used with 7,000 lb triple axles and is designed for a 3" wide channel bracket.
    view full answer...
  • Can Titan 21K Bolt-On Coupler be Used for a 14K Trailer
    As long as your adjustable bolt holes are 2" apart (see attached photo) the Titan Bolt-On Coupler # T4855300 would be a great option! The coupler being rated for more than the GVWR of the trailer can actually be a good thing. Just be sure that you don't exceed the weight rating of your trailer as this will not increase the rating of your trailer unless your current coupler is the limiting factor.
    view full answer...
  • Availability of Replacement Titan 3-Inch Bolt-On Coupler for Titan Brake Actuator # T1889800
    You can use Titan bolt-on coupler # T4855300 on your Adjustable-Channel Brake Actuator # T1889800. This coupler has a primed finish, takes a 2-5/16-inch hitch ball and offers a 21K capacity. Mounting hardware is included. Other similar 3-inch bolt-on couplers are shown on the link provided.
    view full answer...

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Info for this part was:

Written by:
DeAnne T
Expert Research:
Jameson C
Installed by:
Cole B
Updated by:
Sarah W

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