Dexter Trailer Idler Hub Assembly for 3,500-lb Axles - 5 on 4-3/4

Dexter Trailer Idler Hub Assembly for 3,500-lb Axles - 5 on 4-3/4

Item # 845475UC1

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Trailer Hubs and Drums 845475UC1 - L68149 - Dexter Axle
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Product Images

Customer Photos


  • 5 on 4-3/4 Inch
  • For 3500 lbs Axles
  • Hub
  • Standard
  • 13 Inch Wheel
  • 14 Inch Wheel
  • 14-1/2 Inch Wheel
  • 15 Inch Wheel
  • Dexter Axle
  • L68149
  • 1/2 Inch Stud
  • L44649
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, 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 4-3/4 part number 845475UC1 can be ordered online at or call 800-298-8924 for expert service.

  • All Info
  • Reviews (21)
  • Q & A (19)
  • Videos (1)
  • Photos
  • Why etrailer?

Dexter Axle Trailer Hubs and Drums - 845475UC1

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, and lug nuts included.


  • Trailer hub assembly fits idler axles
    • Bearings, races, seal, grease cap, 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 4-3/4"
  • Grease cap flange diameter: 1.988"
  • Wheel bolt dimensions: 1/2" diameter x 1-5/16" long
  • 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"

K08-248-92 Dexter Trailer Idler Hub Assembly for 3.5K Axle with Hardware - 5 on 4-3/4

Replaces 845475UC1

Video of Dexter Trailer Idler Hub Assembly for 3,500-lb Axles - 5 on 4-3/4

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

Video Transcript for Dexter Axle Trailer Hubs and Drums - Hub - 845475UC1 Review

Today we'll take a quick look at the Dexter Axle Trailer Hub Assembly part number 845475uc1. Now this hub assembly has a capacity of 1,750 pounds. When paired up with another it'll total at 3,500 pounds, which makes it a good application for 3,500 pound axles. There are five studs pressed into the hub that measure 5 on 4 3/4. If we measure from the center of one stud to the center of the next we get a 2 3/4 inch measurement which tells us that it's a 5 on 4 3/4. Now included with the hub assembly are the races which are actually already pressed in inside the hub where they need to be.

You also get your grease seal, which is number 58846; a cap that's going to go over the outside to help keep dust and dirt from getting inside where all your internals are lubricated; your conical lug nuts that will secure the wheel to the studs of the hub; you'll also get your inner and outer bearings. Your inner bearing is L68149 and your outer bearing will be L44649. And that's it for a quick look at Dexter Axle's Trailer Hub Assembly part number 845475uc1.

Customer Reviews

Dexter Trailer Idler Hub Assembly for 3,500-lb Axles - 5 on 4-3/4 - 845475UC1

Average Customer Rating:  4.9 out of 5 stars   (21 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, and lug nuts included.

- 845475UC1

Great product great service! 642674

- 845475UC1

Very good product. Great service! 588120

- 845475UC1

The hubs are outstanding. I looked at other sites and couldn’t find what I needed but at your site found it the first time. 462707

- 845475UC1

Great price and fast shipping. 380231

- 845475UC1

Everything worked great. Thanks for the fast shipping, 358886

- 845475UC1

Items arrived in record time, as described fender was great , hubs were excellent, had to paint them black to match the other two but they were great thank you. I have done business before with etrailer and will continue to do so in the future. 297422

- 845475UC1

Great part, this really was a hard to find part,thanks 280336

- 845475UC1

just to let etrailer know how greatfull i am for the items i order. everthing i expected was on the order.the hubs i needed are hard to find( 5on 4 3/4 ).thanks to etrailer i can now put together my trailer.excellent information on products, service, and price as well. 217583

- 845475UC1

Product was just as described and shipping was very quick. Would highly recommend. 213582

- 845475UC1

Arrived Quickly 183604

- 845475UC1

Product was as described and worked per fectly. 168654

- 845475UC1

product was exactly what I needed. Sales person was very helpfull. Also pruchased an axle assembly that fit perfect. 163694

- 845475UC1

Very satisfied with my order.What I ordered, I received.Would recommend Etrailers to anyone needing parts. 163118

- 845475UC1

Product was exactly what I needed. If not for the phone help I would have ordered the wrong size. I plan I using e trailer more often. This was a first time purchase. 149791

- 845475UC1

Excellent quality hub from a well known and trusted manufacturer. 4-3/4" bolt circle not as common as most 4-1/2" bolt circle hubs offered by other vendors, but that suited my purposes perfectly. All parts were included, and I would buy this again without hesitation. 132935


Its been a year now since I received these, and am still very satisfied. No problems or issues.

Bob W - 05/28/2015


- 845475UC1

Good wheel hubs complete with all necessary mounting parts. Unfortunately one of the four hubs didn't have the correct grease seal with it. One seal instead of having two sealing lips, only had a single inner seal ring with no tensioner spring. If not for that one grease seal it was a good order, reasonable pricing and very quick shipping. 111589

- 845475UC1

Product arrive ahead of schedule, put in service, and worked perfectly. I am beyond satisfied. This replaced 5 X 4 1/2 with 5 X 4 3/4 - this is on the trailer, as yet unpainted. 56898

- 845475UC1

Good product works great!! Shipped very quickly. 54952

- 845475UC1

Exactly what I needed and great quality. Everything was complete. 38262

- 845475UC1

Great quality (just hope my husband got the right part). Fast shipping, competitve prices. Could not ask for better service or attention. I have placed another order and will continue to do so in the future. It is hard to find companies with this kind of integrity. Would highly recommend them to everyone!!!! 29926

- 845475UC1

Hub Assembly Ordered hub assemble with specific bolt pattern. received in a very timley matter. Happy with service and product,, if a time a-rises to order something else,, I will def try again .. Thanks, Napa 3703


Ask the Experts about this Dexter Axle Trailer Hubs and Drums

Do you have a question about this Trailer Hubs and Drum?

  • Replacement Trailer Hub Assembly for Dexter 8-248 Hubs
  • The Dexter "8-248" is a hub assembly for 3,500 lb axles that uses an L68149 inner bearing and a L44649 outer bearing. This hub assembly was offered in both 5 on 4-1/2" and 5 on 4-3/4" bolt patterns therefore you would need to confirm your bolt pattern in order to choose the correct hub. I have attached a help article to help you find this as well. I have also attached my recommendations on each hub for you below. Dexter: 5 on 4-1/2" - part # 84545BX 5 on 4-3/4" - part # 845475UC1 etrailer: 5...
    view full answer...

  • 3,500 lb Trailer Hub/Drum with 5 on 4-3/4 inch Bolt Pattern
  • For a hub/drum with a 3,500 lb capacity and the bolt pattern of 5 on 4-3/4 inch like you said you need you'd want the Dexter part # 845476UC3 which would fit and work well. The drum size is 10 inch and for assemblies you'd want the # 23-468-469 for self-adjusting assemblies for both sides of the trailer.
    view full answer...

  • Recommended Replacement for a Dexter Hub with a 5 Bolt Pattern and A 2-3/4 Inch Bolt Distance
  • If the 2-3/4 measurement is from center of bolt to center of bolt, then your current hub has a bolt pattern of 5 on 4-3/4. Hub # 845475UC1 does have a bolt pattern of 5 on 4-3/4, but you will want to make sure that your current bearings will match the ones included with the hub. Hub # 845475UC1 uses inner bearing # L68149 and outer bearing # L44649. These industry standard numbers should be lasered onto the back side of your bearings, or if the numbers are not visible, you can always...
    view full answer...

  • Replacement Hubs with 5-on-4-3/4 Wheel Bolt Pattern
  • We do offer 5-on-4-3/4 hubs that you can see on the linked page. These include both idler hubs like # 845475UC1 and hub/drums like # 845476UC3. Be sure to check the bearings in your current hubs for their part numbers; new hubs have to use the same bearings or they will not fit on your spindles. The linked photo will show you where to find those part numbers. Also note that mobile home axles are intended for a single use only (to transport the MH) but not for ongoing use like a trailer axle.
    view full answer...

  • Bearing Part Numbers and Spindle Dimensions for Selecting New Hubs
  • If you want to switch out the hubs what you need to do is find the bearing and seal part numbers from the original hubs. Any new hub must use the same bearings and seals as the original in order for it to fit properly on your spindles. Examples of those parts numbers are show in the linked image. You can instead measure the spindles but those measurements need to be very precise, and to the nearest thousandth of an inch, like 1.234-inches. You will need a digital caliper like # PTW80157...
    view full answer...

  • How To Find Correct Replacement Bearings For Trailmaster Boat Trailer
  • I was unable to find any reference to a Dico 45264 hub. You will need to take some of the measurements to make sure you get the correct bearings and seals for your trailer. Trailer manufacturers use many different sizes when they build their systems and without precise measurements, we could not be 100 percent sure. Digital calipers are available at most tool supply stores. I have attached a drawing that shows where you can take the measurements. We would need to know the inner diameters...
    view full answer...

  • Recommended Idler Hub For Boat Trailer With 3,500-Lb Axle
  • We have just what you are looking for. I called my contact at TDE and asked about the hub you have on your boat trailer. They told me that it was a 5-stud idler hub for a 3,500-lb axle. I have attached a link to our product page for the 3,500-lb hubs we offer. The bolt pattern can be a bit different so you will want to determine which one you need. I have attached a helpful article that explains how to find the correct bolt pattern you need for your wheel. If you have a 5 on 4-1/2 pattern...
    view full answer...

  • Suitability of Replacement 5-on-4-3/4-Inch Bolt Pattern Hubs on Boat Trailer
  • We offer four hub assemblies in the 5-on-4-3/4 inch bolt pattern you need and these can be seen on the link at right. The key to determining compatibility with your spindles is the bearing set used. All of these hubs use the same bearing set, # L68149 inner and # L44649 outer. If your hubs use the same bearing set then they will work. If you are referring to a taper in the mid-section of the spindle (the area between the points where the two bearings sit) this will not matter. In...
    view full answer...

  • How to Pick Out Trailer Axle Bearings and Seal
  • I appreciate you giving me info on your hubs, and I can help you pick out the correct bearings and seal, but the info you did give me does not help identify the correct parts you would need. The only two solution I have for you would be to remove the hubs and get the numbers that are stamped on the bearing or for you to remove the hubs and use a digital or dial caliper to measure where the bearings and seal ride (see pic). You will need to get the diameter on the hub where the seal...
    view full answer...

  • Replacing Dexter Hubs To Transition to a GMC Truck Wheel Bolt Pattern
  • To determine the correct hub to replace the existing hub on your horse trailer I will need the inner and outer bearing numbers and the seal part numbers to select the proper parts for your spindle. The 8-256 number that you see on your hub is a casting number and even if I could match it to a Dexter hub assembly it would most likely not match up with the correct bearings. Remove a hub and you should find the part numbers on the back side of the bearings and the seal. You will need to...
    view full answer...

  • How to Determine the Correct Replacement Hub
  • In order to find the correct replacement hubs for your trailer, you need to know the weight rating of your axle, and also what bearings your current hub has. You will need to take apart your current hub assembly and look at the bearings themselves; wipe away the grease and you should be able to see the part number stamped directly on them. If you are unable to find them, you need to use a digital caliper such as # 301-17068 and measure your spindle to the thousandths of an inch where the...
    view full answer...

  • Replacement Hub for Master Pro PT A-4 and National Bearing A-17 Bearings on a Utility Trailer
  • Based on the information I could find on those 2 bearings it appears that they are the same as L44649/L68149 bearings. Hubs that take these bearings include: # 84545BX for a 5 on 4-1/2 bolt pattern # 84545UC1-EZ for an EZ lube axle and 5 on 4-1/2 bolt pattern # 84550BX for a 5 on 5 bolt pattern # 845475UC1 for a 5 on 4-3/4 bolt pattern # 845475UC1-EZ for an EZ lube axle and 5 on 4-3/4 bolt pattern # 84555UC1 for a 5 on 5-1/2 bolt pattern The star design is just a newer...
    view full answer...

  • How to Select Replacement Hubs for 2200-lb Dexter Axle on Aluma Motorcycle Trailer
  • To select new hubs you'll need to match 3 bits of information: axle capacity (which you know), wheel bolt pattern and the bearing set used inside your existing hubs. You can use the linked page for hubs to select your wheel bolt pattern. There are several different 5-bolt patterns and the linked article will help you confirm which you have. Using the linked page, click on the 2200-lb axle rating and your 14-inch wheel size. Then select your bolt pattern. Finally, using your current...
    view full answer...

  • Will Trailer Hub Assembly # 845475UC1 Fit Redline Trailer Spindle # R40484
  • The inner/outer bearings and grease seal dimensions match so yes, the Trailer Hub Assembly, # 845475UC1, will fit the Redline Trailer Spindle, # R40484.
    view full answer...

  • What Diameter Studs are Used in the Trailer Hub Assembly # 845475UC1
  • The studs that are used in the Hub part # 845475UC1 are 1/2 inch in diameter. I attached a review video for you to check out as well.
    view full answer...

  • What Info Is Needed to Pick Out Replacement Trailer Hub
  • I can help you determine what is the correct replacement trailer hub you need, but I am not able to find any info on a hub part number that matches what you mentioned. In order to pick out the correct hub assembly for a trailer you are going to need know a few key pieces of information. The first thing you will need to know is the bolt pattern of your hubs. This is so you get a hub that is compatible with your wheels. I attached an FAQ article on determining bolt pattern for you to...
    view full answer...

  • Replacement Hub for Utility Trailer with Dexter 8-256 Hub
  • The Dexter "8-248" 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...

  • Will the Trailer Hub Assembly # 845475UC1 fit on the Spindle # SP20484
  • Yes, the Spindle # SP20484 that you referenced is compatible with the Trailer Hub Assembly # 845475UC1 that you also referenced.
    view full answer...

  • What are the Inner Diameters of the Bearings Used in Trailer Hub # 845475UC1
  • Bearings have very precise measurements, to the thousandth inch. The hub # 845475UC1 uses inner bearing # L68149. It has an inner diameter of 1.378 inches. The outer bearing is # L44649 and has an inner diameter of 1.063 inches. While you could convert the measurements to fractions and it would be close to what you have the best way to determine the correct bearings is to go by the old bearing numbers stamped into the metal of the bearings or to get precise spindle measurements using...
    view full answer...

Do you have a question about this Trailer Hubs and Drum?

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Info for this part was:

Expert Research:
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Expert Research:
Patrick B
Expert Research:
Michael H
Expert Research:
Jameson C
Expert Research:
Adam R
Updated by:
Lindsey S
Updated by:
Sarah W
Updated by:
Alexander C
Updated by:
Mike S

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