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Dexter Trailer Idler Hub Assembly for 3,500-lb Axles - 5 on 5-1/2

Dexter Trailer Idler Hub Assembly for 3,500-lb Axles - 5 on 5-1/2

Item # 84555UC1
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Trailer Hubs and Drums 84555UC1 - Standard - Dexter Axle
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Hub is designed for use on trailer idler axles. Fits 3,500-lb axles with #84 spindles. Inner bearing (L68149) and race, outer bearing (L44649) and race, grease seal, grease cap, wheel bolts, and lug nuts included. Lowest Prices for the best trailer hubs and drums from Dexter Axle. Dexter Trailer Idler Hub Assembly for 3,500-lb Axles - 5 on 5-1/2 part number 84555UC1 can be ordered online at etrailer.com or call 800-298-1624 for expert service.
  • All Info
  • Reviews (19)
  • Q & A (15)
  • Photos
  • Why etrailer?

Dexter Axle Trailer Hubs and Drums - 84555UC1

  • 5 on 5-1/2 Inch
  • For 3500 lbs Axles
  • Hub
  • Standard
  • 13 Inch Wheel
  • 14 Inch Wheel
  • 14-1/2 Inch Wheel
  • 15 Inch Wheel
  • L44649
  • L68149
  • Dexter Axle

Hub is designed for use on trailer idler axles. Fits 3,500-lb axles with #84 spindles. Inner bearing (L68149) and race, outer bearing (L44649) and race, grease seal, grease cap, wheel bolts, and lug nuts included.


  • Trailer hub assembly fits idler axles
    • Bearings, races, grease seal, grease cap, wheel bolts, and lug nuts are included
  • Sturdy iron construction
  • Hub and drum are made in the USA


  • Application: 3,500-lb trailer axles with #84 spindles
  • Wheel size: 13" to 15"
  • Bolt pattern: 5 on 5-1/2"
  • Grease cap flange diameter: 1.986"
  • Wheel bolt diameter: 1/2"
  • Weight capacity: 1,750 lbs

Bearing, Race, and Seal Information

  • Bearings (included)
    • Inner bearing: L68149 (1.378" inner diameter)
    • Outer bearing: L44649 (1.063" inner diameter)
  • Races (included)
    • Inner race: L68111
    • Outer race: L44610
  • Grease seal (included): 58846
    • Inner diameter: 1.719"
    • Outer diameter: 2.565"

Determining the Bolt Pattern

The first number in the bolt pattern is the number of bolt holes. The second number denotes the diameter, in inches, of the circle on which the bolt holes sit.

Bolt Pattern - Even

On wheels with an even number of bolt holes, measure from the center of one bolt hole to the center of the hole directly across from it. (Example: "8 on 6-1/2" means 8 bolt holes with 6-1/2" from the center of one hole to the center of another on the opposite side.)

Bolt Pattern - Odd

To determine the bolt-circle diameter on wheels with an odd number of bolt holes, measure from the center of any bolt hole to the point halfway between the two bolt holes directly across from the first. (Example: "5 on 4-1/2" means 5 bolt holes with 4-1/2" measured to a point halfway between the opposite bolt holes.)

Bolt Pattern Side

Measuring the distance (D) from the center of one bolt hole on the wheel to the center of a bolt hole right next to it can also help to determine the bolt pattern.

  • If D = 2-5/8", then the bolt pattern is 5 on 4-1/2"
  • If D = 2-3/4", then the bolt pattern is 5 on 4-3/4"
  • If D = 3", then the bolt pattern is 5 on 5"
  • If D = 3-1/4", then the bolt pattern is 5 on 5-1/2"

K08-256-90 Dexter Trailer Idler Hub Assembly for 3.5K Axle with Hardware - 5 on 5-1/2

Replaces 84555UC1

Customer Reviews

Dexter Trailer Idler Hub Assembly for 3,500-lb Axles - 5 on 5-1/2 - 84555UC1

Average Customer Rating:  4.7 out of 5 stars   (19 Customer Reviews)

Hub is designed for use on trailer idler axles. Fits 3,500-lb axles with #84 spindles. Inner bearing (L68149) and race, outer bearing (L44649) and race, grease seal, grease cap, wheel bolts, and lug nuts included.

- 84555UC1

These are pictures of your product assembled on my trailer.You have an excellent product and service. Thank you all very much. You save time and money.

- 84555UC1

This is an exact replacement for the hub that had been ruined on my 23' Donzi boat trailer. It was shipped extremely quickly and I installed it this afternoon - ready to roll again!

- 84555UC1

At the time I ordered these, I was new to re-doing breaks. I had never done anything like it before. I did my best research. However, I still ordered the wrong parts for my trailer. George and Tamera were extremely helpful in their research! They went out of their way to help me get what I needed. After watching the videos and getting greasy, the job was complete. I may have made mistakes along the way, and I really should have called first, but in the end, my trailer works great. My trailer - 3 years later - still has no issues and has over 10,000 miles on it pulling my quads. I have been a satisfied customer since 2015. Joel

- 84555UC1

Everything is great. I used thes parts for a year. Many time to the lake and back. Round trip over 500 miles. I really appreciate the quality parts supplied by E trailer

Perfect great product
Jeff R - 01/16/2018

- 84555UC1

Hubs worked great...now my trailer has the same bolt pattern as my Jeep.

- 84555UC1

I always go to etrailer.com for all my trailer parts. Fast easy ordering and fast shipping help me get my customers back on the road quicker. The price is right and the parts are quality! Brent Ultra Marine Service Knoxville TN

- 84555UC1

Product arrived in good condition. Installation was smooth and easy. The only problem that I had, mainly my fault, was installing the dust caps. The fit was extremely tight to the point I bent it up then it would not fit properly. One thing I would suggest to others is to install and tighten as you would normally, then wait a day or two and try to wiggle the rim. If it does pull the cotter pin and tighten again. IF you can not wait then do check them after the first usage.

- 84555UC1

product a Hub and bearings were as expected-New, the bearing cap was thin and crushed when trying to get it to seat but it did finally work the unexpected thing was the fast service it had to be shipped the same day as I called in the order. That means downtime was less!! Thanks and I will be using you again!!

- 84555UC1

i bought this hub to adapt a 30's era Ford spoked wheel to my motocycle sidecar. it fits the wheel perfectly. it will take a bit a creativity to match it to my axle, but i knew that would be needed when i ordered it. it's a good solid piece.

- 84555UC1

Was very pleased with the trailer hub . We couldn't find one anywhere else! Would use etrailer.com next time we need anything!

- 84555UC1

No grease zerk. I guess you are expected to use ez-lube axles. No response fro eTrailer about this issue.

- 84555UC1

perfect. quick shipping and customer service tops!

- 84555UC1

Ordered my part for my pontoon boat that was next go impossible to find anywhere on Monday morning and ups delivered it on wensday afternoon! I haven't put the part on yet due to weather but I'm happy so far!!!

- 84555UC1

Well, I can't say much about the product itself - seems to be just fine. I can, however, comment on the superb service - our shipment was "upgraded" without even asking. We ordered the part on a Saturday and had it on Wednesday. That's how you keep customer coming back!!

- 84555UC1

Haven't installed it yet but the construction of the part looks to be very high quality! I am very happy with my order

- 84555UC1

The product that I ordered was what I needed and delivery was very great. Def got my business

- 84555UC1


- 84555UC1

- 84555UC1

Service was great and the product was a quality product.


Ask the Experts about this Dexter Axle Trailer Hubs and Drums

  • Can 17 Inch Wheels be Used with 3,500 Pound Trailer Hubs
    The Dexter Trailer Idler Hub Assembly # 84555UC1 referenced in your question is designed for 3,500 pound axles and works with 13 inch to 15 inch wheels, like you mentioned. The potential problem with going to a larger 17 inch wheel is that there won't be enough surface area on the hub to safely support a wheel of that size. This can cause major issues if you were to hit a curb or other object in the road with the trailer, as this lack of support from the hub can easily lead to the wheel...
    view full answer...
  • How To Pick out a Replacement Hub For a Boat Trailer
    Until you can verify that the hub on your trailer is a Trailer Hub Assembly # 84555UC1 I cannot recommend you go ahead and purchase this hub as a replacement. Unless the trailer you have currently has a hub problem you really wouldn't need to worry about having a back up for the 1 hour drive with the trailer back to your home. What I would do is inspect the trailer before you purchase it to make sure the hubs are in decent shape. If so, buy the trailer and wait till you get home and...
    view full answer...
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  • Replacement 60-Inch 3500-lb Dexter Axle with 5-on-5-1/2-Inch Bolt Pattern
    We do offer 60-inch replacement trailer axles from Dexter and both can be seen on the link provided. Note that both of these are rated for 2000-lbs. The 5-on-5-1/2-inch hub you referenced, part # 84555UC1, is intended for 3500-lb axles. The most important measurements for selecting a replacement axle are the hub face-to-hub face measurement (taken with the hubs in place) and the spring center-to-spring-center distance. Please refer to the linked photo. For example, Dexter Trailer...
    view full answer...
    Image 1 for
  • What Metal is the Dexter Hub # 84555UC1 Made of
    I spoke with my contact at Dexter and they told me that their hubs are construct of cast iron. Cast iron is difficult, but not impossible to weld. For a square spindle to fit this hub you would want the part # TRU47FR.
    view full answer...
  • Replacement Trailer Hub and Bearings for # 84 Spindle
    The 84555-1 trailer hub that you mentioned in your question makes perfect sense and it refers to the Dexter Trailer Idler Hub Assembly # 84555UC1. This idler hub is indeed compatible with the # 84 spindles on your trailer, which use the # L68149 inner bearing and # L44649 outer bearing. As long as your existing hubs are idler units and feature this same 5 on 5-1/2 inch bolt pattern, these will work great as replacements. The bearings, races, and grease seal are included with the hub,...
    view full answer...
  • Outside Diameter of Center of Dexter Trailer 3500-lb 5-on-5-1/2 Idler Hub Assembly 84555UC1
    Dexter Trailer 3500-lb 5-on-5-1/2 Idler Hub Assembly # 84555UC1 has an outside diameter at its center of 2-1/2-inches. Please refer to the linked photo to see this dimension which I confirmed myself in our warehouse.
    view full answer...
    Image 1 for
  • How to Determine the Correct Replacement Trailer Idler Hub
    To determine the correct hub for your trailer you will want to go by the inner and outer bearing numbers stamped into the metal of the bearings. With these numbers I can determine which hub is a correct fit. Hub # 84555UC1 uses inner bearing # L68149 and outer bearing # L44649. The inner bearing # L68149 has an inner diameter of 1.378 inches. Outer bearing # L44649 has an inner diameter of 1.063 inches. Bearing measurements are in decimals and go to the thousandth of an inch because...
    view full answer...
  • Which Trailer Spindles Fit Trailer Hub Assembly # 84555UC1
    I have three options that will fit Trailer Hub Assembly # 84555UC1, for 3,500 lbs. Part # TRU64FR is a standard 1-3/4-inch round spindle that measures 8-1/4" in overall length. Part # TRU84FR is a standard 1-3/4-inch round spindle that measures 11-1/4" in overall length. Part # TRU74FR is an EZ lube 1-3/4-inch round spindle with a grease zerk that allows you to pump grease internally into the spindle. It also contains a brake mounting flange. It measures 9" in overall length. Installing...
    view full answer...
  • How to Measure a Hub or Wheel for the Bolt Pattern
    If a hub or wheel has an odd number of holes/studs then you would measure from the center of one hole to the center point between the 2 holes across from it. If it had an even number you would measure center to center across the hub. If you measure from the center of one hole to the center of the hole next to it and you get 3-1/4 inches then it would be a 5 on 5-1/2 bolt pattern. Vehicle wheels can be different that trailer wheels and hubs and the offset of the wheels are usually...
    view full answer...
  • Replacement Hub for Utility Trailer with Dexter 8-256 Hub
    The Dexter "8-256" is a hub assembly that uses an L68149 inner bearing and a L44649 outer bearing. This hub assembly was offered in a few different bolt patterns therefore you would need to confirm your bolt pattern using the attached help article and then choosing from the list below. 5 on 4-1/2" - part # 84545BX 5 on 4-3/4" - part # 845475UC1 5 on 5" - part # 84550BX 5 on 5-1/2" - part # 84555UC1
    view full answer...
    Image 1 for Image 2 for
  • Replacement Hub Needed for Dexter Axle 8-256
    Your Dexter Axle hub 8-256 should use an # L68149 inner bearing and an # L44649 outer bearing which means you have a #84 spindle and you'll use one of the following hubs: 5 on 4-1/2" - part # 84545BX 5 on 4-3/4" - part # 845475UC1 5 on 5" - part # 84550BX 5 on 5-1/2" - part # 84555UC1 Just match up the bolt pattern and you'll be good to go! I've attached some helpful articles on bolt patterns that you can check out if you aren't sure what you have.
    view full answer...
  • How to Determine Replacement 5 on 5-1/2 Inch Bolt Pattern Hubs 2004 Yacht Club PLC Trailer
    The elements that would need to match up are the inner and outer bearing reference number, the capacity and the bolt pattern. The 5 on 5-1/2 bolt pattern idler hubs we offer use a L68149 inner and L44649 outer bearing. Your existing bearings should have the bearing reference numbers stamped on the bearing cages. If not, measure the surfaces on the spindle where the inner and outer bearings ride. The spindle at the inner should be about 1.378 inches in diameter and 1.063 at the outer....
    view full answer...
    Image 1 for
  • Changing Hubs on 1953 M100 1/4-Ton Military Trailer to Match Jeep Wrangler
    The hub kit you referenced, Dexter Trailer Hub Assembly # 84550BX, has a 5-on-5-inch bolt pattern and so would not work for your trailer 5-on-5-1/2-inch bolt pattern wheels. The link provided will take you to our main page for hub kits in the 5-on-5-1/2-inch bolt pattern where you can use the filters at the left margin to narrow the product results to those with the characteristics you need. Replacement hubs need to be selected based on several factors: bolt pattern, axle capacity and...
    view full answer...
    Image 1 for
  • Availability Of 5-5 1/2 Inch Hub Assembly, Spindle, Bearings Rated For 1,750 lbs. Each
    I have the Dexter Trailer Hub Assembly - 3,500 lbs Axles - 5 on 5-1/2, # 84555UC1, which is rated at 1,750 lbs. each. The bearings, races, cap and seal included. The only other option I would have is the Dexter Trailer Hub & Drum Assembly - 3,500 lbs. Axles - 5 on 5-1/2, # 84557UC3, if you were wanting brakes. The capacity is 1,750 lbs. and comes with a 10 inch X 2-1/4 inch drum. It also comes with bearings, races, cap and seal. The spindles that are available for both hub assemblies...
    view full answer...
  • Trailer Hub Recommendation for a Trailer with Inner Bearing L68149 and Outer Bearing L44649
    Are the wheels you plan on installing on your trailer wheels that were specifically designed for trailer use? Wheels with that much offset are not usually found on trailers, especially in the diameter you have. Aside from that the Trailer Hub and Drum Assembly # 84557UC3 and the # 84555UC1 would work well since the bearing numbers match what you have as well as the bolt pattern. Just so we're both on the same page, offset is the distance the centerline of the wheel is from portion of...
    view full answer...

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