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  1. Trailer Hubs and Drums
  2. Dexter
  3. 6 on 5-1/2 Inch
  4. For 6000 lbs Axles
  5. Hub
  6. 16 Inch Wheel
  7. 16-1/2 Inch Wheel
  8. 17 Inch Wheel
  9. 17-1/2 Inch Wheel
  10. 18 Inch Wheel
  11. 18-1/2 Inch Wheel
Dexter Trailer Idler Hub Assembly for 6,000-lb Axles - 6 on 5-1/2

Dexter Trailer Idler Hub Assembly for 6,000-lb Axles - 6 on 5-1/2

Item # 42655UC1
Our Price: $143.46
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Trailer Hubs and Drums
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Shipping Weight: 14 lbs
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Hub is designed for use on trailer idler axles. Fits 6,000-lb axles with #42 spindles. Inner bearing (25580) and race, outer bearing (15123) and race, grease seal, grease cap, wheel bolts, and lug nuts included. Great Prices for the best trailer hubs and drums from Dexter. Dexter Trailer Idler Hub Assembly for 6,000-lb Axles - 6 on 5-1/2 part number 42655UC1 can be ordered online at or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (16)
  • Q & A (0)
  • Photos

Dexter Trailer Hubs and Drums - 42655UC1

  • 6 on 5-1/2 Inch
  • For 6000 lbs Axles
  • Hub
  • 16 Inch Wheel
  • 16-1/2 Inch Wheel
  • 17 Inch Wheel
  • 17-1/2 Inch Wheel
  • 18 Inch Wheel
  • 18-1/2 Inch Wheel
  • Standard
  • 1/2 Inch Stud
  • 15123
  • 25580
  • Dexter

Hub is designed for use on trailer idler axles. Fits 6,000-lb axles with #42 spindles. Inner bearing (25580) and race, outer bearing (15123) and race, grease seal, grease cap, wheel bolts, and lug nuts included.


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


  • Application: 6,000-lb trailer axles with #42 spindles
  • Wheel size: 16" to 18-1/2"
  • Bolt pattern: 6 on 5-1/2"
  • Grease cap flange diameter: 2.44"
  • Wheel bolt diameter: 1/2"
  • Weight capacity: 3,000 lbs

Bearing, Race, and Seal Information

  • Bearings (included)
    • Inner bearing: 25580 (1.75" inner diameter)
    • Outer bearing: 15123 (1.25" inner diameter)
  • Races (included)
    • Inner race: 25520
    • Outer race: 15245
  • Grease seal (included): 10-36
    • Inner diameter: 2.25"
    • Outer diameter: 3.376"

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"

K08-213-9C Dexter Trailer Idler Hub Assembly for 6K Axle with Hardware - 6 on 5-1/2

Replaces 42655UC1

Customer Satisfaction Score:

Customer Reviews

Dexter Trailer Idler Hub Assembly for 6,000-lb Axles - 6 on 5-1/2 - 42655UC1

Average Customer Rating:  4.8 out of 5 stars   (16 Customer Reviews)

Hub is designed for use on trailer idler axles. Fits 6,000-lb axles with #42 spindles. Inner bearing (25580) and race, outer bearing (15123) and race, grease seal, grease cap, wheel bolts, and lug nuts included.


Couldnt be happier with these hubs! First one I pulled out of the box, I just verified that the races were seated, and installed after packing the bearings. One hub out of the four had a damaged bearing and seal, but it was due to packing. No biggie, was able to "coerce" the bearing and seal to look "normal". Had all four corners done and back on the road in less than 4 hours, which included uninstall of old hubs, cleaning, packing and installing new parts. Quick shipping as well. eTrailer is a great place to shop!


Pleasantly surprised that it came with bearings, seals, races, and lug nuts


I used 42655UC1 hubs on mobile home axles just required different size seal to fit spindle, great product & you guys were very helpful with helping find a hub that would fit,very pleased with this product and service.


Good ExperieneWebsite laid out good, when ordering, it showed me what products went together instead of searching to find out like which hub goes to what axle and vise versa. Fast shipping and good products. Recommend them to anyone and everyone looking for trailer parts.




Always my go to for trailer parts.


Product as expected, delivery sooner than expected, overall very good. Replaced old hubs on moblie home axles. Very easy to do. Great service.


Great service and fast shipping - Ricky was a big help making sure that everything fit together - thanks a lot!


Still rolling. No complaints


worked fine


Very helpful and pleasant purchase expe rience.


High quality stuff, really impressed


very good


I've not have a chance to use them.


What a fast turn around



See what our Experts say about this Dexter Trailer Hubs and Drums

  • Will Exceeding Axle Capacity Bend an Axle
    Based on the calculations you gave me, you did exceed your axle capacities. Your total trailer weight after cargo is 12,216 lbs yet you only have axle capacity of 10,400 lbs. As I'm sure you know you will need to replace your bent axle, but I cannot safely recommend you exceed your axle capacity. If you check the sticker or plate near the coupler of the trailer the axle capacities and trailer capacities should be listed there.
    view full answer...
  • Axle Capacity for a Hayes Axle with 8 on 6-1/2 Bolt Pattern
    You likely have an 8 on 6-1/2 bolt pattern which is normally found on 5,200 pound axles to 10,000 pound axles. The majority of axles with this bolt pattern are 7,000 pound axles. If you could pull off a hub and tell me the numbers stamped on the sides of the inner and outer bearings that can help narrow it down. To further narrow it down if you could tell me the diameter of the axle and inner diameter and width of the drum, if equipped, that will help a lot. The second most common axle...
    view full answer...
  • Correcting Heat Damage to Car Trailer Spindles After Bearings Burned Up
    A spindle's surfaces really need to be perfect to prevent damage (or early wear) to your bearings and seal. It sounds like you did a pretty effective job of removing most of the scoring but the concern is hidden heat damage to the spindle. This cannot be corrected by the emery cloth. If your bearings burned up then there is a chance the spindles could have been weakened. Either the spindles or the entire axle should be replaced. You can replace your torsion axle or install a Timbren axle-less...
    view full answer...
  • How Can I Identify an Axle Without a Sticker?
    Thank you for the pictures! It looks like you've got some sort of square drop axle on your trailer and if you can't find an identifying sticker, I can still help you figure out what you've got so that you can make the swap to electric brakes on your trailer. It looks like you've got 6 bolts on the wheels, which can help narrow down our search, but we'll need to know what size the brakes on the trailer are and if possible, what size (or number) the inner and outer bearings are on the hubs. If...
    view full answer...
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  • Boat Trailer Bearing Kit for 2-3/8 Inch Diameter Axle
    There is a standard bearing kit for the 2-3/8 inch axle (3,500 lb) which does make things a lot easier than other sizes. It is the Bearing Kit for #84 Spindle, L44649/L68149 Bearings, 10-19 Double Lip Seal # BK2-100.
    view full answer...
  • Does The Capacity Of A Trailer Suspension Match The GVWR Of A Trailer
    The suspension will typically hold about 80 - 85% of the trailer's GVWR with the trailer jack or landing gears (depending on the style of the trailer) holding the other 15-20%. This is why you'll typically see tires and axle capacities under the trailer's GVWR. When it comes to suspension components, like the Dexter Trailer Idler Hub Assembly # 42655UC1 you were looking at, you would want to match the capacity of the axle. From there you'll want to check that the bearings for the hub...
    view full answer...
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  • Replacement for 16 Inch Wheel with 8 on 6-1/2 Bolt Pattern and 5/8 Inch Studs
    For your replacement wheel I recommend the # AM20781 Steel Spoke Trailer Wheel - 16" x 6" Rim - 8 on 6-1/2 - Galvanized Finish. An in-house wheel and tire expert verified that this wheel will fit on 5/8" wheel studs in addition to the 1/2" and 9/16" listed in the specs. This wheel has an offset of 0 and a capacity of 3,750 lbs. The galvanized finish provides superior protection from rust and corrosion. I have attached a video review for your reference.
    view full answer...
  • Determining Weight Capacity of Square Axle Trailer
    Square axles are harder to identify weight capacity as they don't have standard diameters that match a specific capacity like round axles do. So what you can do is first check the VIN plate of the trailer up near the coupler to see if the capacity is listed there. You can also check the axle to see if there's a tag there that would have the capacity listed. Otherwise we have to pull off a hub and identify it so we can determine it's capacity. Once you have the hub off you can get me the...
    view full answer...
  • Does Number of Trailer Axles Affect Trailers Axle Capacity
    If you had two 3,500 lb axles your trailer would have an overall axle capacity of 7,000 lbs. The individual axles themselves are rated at 3,500 lbs. Typical Axle Diameters Based on Axle Capacity - 1,000-lb - 2,000-lb Axles: 1-1/2 inch - 1-3/4 inch diameter - 3,500-lb Axles: 2-3/8 inch diameter - 6,000-lb - 7,200-lb Axles: 3 inch diameter - 8,000-lb Axles: 3-1/2 inch diameter - 9,000-lb Axles: 4 inch diameter - 10,000-lb Or more axles: 5 inch diameter Trailer overall capacities aren't...
    view full answer...
  • Determining Axle Weight Capacity of 3 inch Axles
    Typically axles with a 3 inch diameter have a range of weight capacity ranging from 5,200 to 7,200 pounds. This is the weight capacity of each axle. Therefore, you camper trailer axles could have a combined weight capacity ranging from 10,400 to 14,400 pounds. Please keep in mind that this is an approximate weight axle range and your specific trailer axles may be different, especially considering the age of your trailer. I have also included some helpful articles that might of beneficial...
    view full answer...
  • Parts Needed to Install a 7-Way and Brake Controller in a 2002 freightliner Sprinter
    First you will need to start with a 4-way. For that you would want the part # C59496. See installation instructions and install video I attached. That will give you a 4-way that you can then convert into a 7-way. For everything needed to convert your 4-way to a 7-way and install your brake controller you would need the part # ETBC7. I attached installation instructions and an install video for you to check out for this as well.
    view full answer...
  • Recommended Replacement Hub Assembly For Utility Trailer
    With the part numbers you provided for your bearings I recommend the Dexter Trailer Hub Assembly, part # 42655UC1. This idler hub has a 6 on 5-1/2 wheel bolt pattern and is designed for 6,000-lb trailer axles. This hub assembly comes with bearings, races, seal, grease cap, wheel bolts and lug nuts. Since you said you want to change the hub to a non-brake assembly, you will need to either replace the surge coupler or lock it out so it cannot move in or out. Since you are going with...
    view full answer...
  • Replacement Wheel Stud for 3,500 lb Axle Hub
    Most likely you have a Dexter 3,500 lb hub which uses basically the standard wheel studs as other 3,500 lb hubs as well. So the correct replacement wheel stud would then be the part # 7-122.
    view full answer...
  • How are Trailer Axles Typically Identified
    Your axles should have a sticker or plate on them that identifies them with the capacity listed. Or you can use the diameter of the axle to get an idea: Typical Axle Diameters Based on Axle Capacity - 1,000-lb - 2,000-lb Axles: 1-1/2 inch - 1-3/4 inch diameter - 3,500-lb Axles: 2-3/8 inch diameter - 6,000-lb - 7,200-lb Axles: 3 inch diameter - 8,000-lb Axles: 3-1/2 inch diameter - 9,000-lb Axles: 4 inch diameter - 10,000-lb Or more axles: 5 inch diameter
    view full answer...
  • Determining Axle Capacity for 2 inch Square Axles
    I wish it was possible to know the capacity just off of the info you listed. Square axles don't have standard capacities. You might have best luck if you can get me more info on the hubs of the axle. Like bolt pattern, bearing numbers, etc.
    view full answer...
  • Correct Replacement Hub For Jet Ski Trailer With BT150 Hub
    I would be happy to help! Based on the BT150 stamped in your hub you will need the CE Smith Trailer Idler Hub Assembly # CE13315 which includes inner and outer bearings # L44649. This hub comes pre-greased and ready to install on the spindle of your Jet Skit Trailer making it a very easy option. I included a video of the # CE13315 for you to take a look at.
    view full answer...
  • Is a Axle Stamped with D80 an Dexter 8k Rated Axle
    The D80 you mentioned in the info you found indicates that you do have a Dexter 8k axle. If you are looking for a replacement hub for this axle the part # 8-287-14UC1 is a 8k rated Dexter hub designed to fit that spindle.
    view full answer...
  • Can a 1,150 Pound UTV be Safely Carried on a Trailer Rated for 1,300 Pounds
    Your 1,150 pound UTV is under the capacity of the trailer which you have listed at 1,300 pounds so this set up would work fine and be safe. Provided that you stay within the trailer capacity then it would not be a problem. Keep in mind that you will need parts to secure the UTV to the trailer and factor in that weight as well. An axle strap such as # BDW20229 is a great option. It is light weight and has a 10,000 pound capacity so it can handle the UTV easily. I have linked a video review...
    view full answer...
  • Which Trailer Axle Company is Best, Lippert Dexter or Al Ko
    I would recommend Dexter Torflex axles the highest for torsion axles. And then put Al Ko and Lippert at about the same in quality. I was searching around online and the common consensus among the trailering forums is that the Dexter axles are definitely the ones to go with if at all possible. Lippert is a great company that does a ton of things really well, but Dexter does axles the best.
    view full answer...
  • Replacement Trailer Springs for a 1972 Timberline 186 Trailer
    The reason your equalizer isn't sitting level is because you have two different sets of leaf springs on your trailer. Since you have one axle that has more leafs than the other that axle will want to sit higher which will cause the equalizer to sit out of level. As long as you get the properly rated springs for your trailer the amount of leafs does not really matter. The closest spring we have to what you would need would be the part # PR427 that is 27 inches long and has a 3k axle capacity....
    view full answer...
  • Can Trailer Capacity be Changed in Any Way
    A a trailer's capacity is limited by its lowest-rated component so even if you were to change out the axles and coupler the trailer's frame, tires, etc. may not support the additional weight. Additionally, the capacity of your trailer is limited by its GVWR; no matter what trailer you get it will have a GVWR that is the maximum it can weigh when fully loaded. That capacity cannot be exceeded so if the trailer you are getting has a GVWR of 2,250 lbs, for example, there is nothing you can...
    view full answer...
  • Jayco Jay Flight 26BHS Axle Capacity
    I took a look at the specs for the Jayco Jay Flight 26BHS and based on that and the photo you sent in (thank you for that) it does have two 3,500 lb axles. Since you have a 10 inch drum the Electric Trailer Brake Kit # AKEBRK-35-SA, which is for 3,500 lb axles, will work so long as you also have a 4-bolt mounting flange. These brakes are 10" diameter x 2-1/4" wide so also be sure your drum has that width and you'll be set. The only other thing you will need is the Mounting Hardware for...
    view full answer...
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  • Capacity of # 42655UC1 Trailer Hub
    The hub you mentioned, # 42655UC1 is compatible with a 6,000 lb capacity axle. Each hub is rated at 3,000 lb max, or 6,000 lb per axle. For a tandem axle set-up, the hubs would provide a 12,000 lb capacity. Assuming that your existing hub uses a # 25580 inner bearing, and a # 15123 outer bearing, this would be the proper replacement. Four hubs would equal a 12,000 lb capacity for a tandem axle trailer. These hubs are compatible with grease seals that use either a 2.25 (#RG06-070) or a...
    view full answer...
  • Can a Trailer with a 3k Axle Rating and 2.7k Tire Rating Carry 2,600 lbs
    Yes, your axle has a rating of 3,000 lbs and your total tire capacity is 2,700 lbs so you would be able to carry a 2,600 lb load based on those two figures.
    view full answer...

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