Marine-grade hub is designed for use on trailer idler axles. Fits 4,2500-lb axles. Requires inner bearing (L68149) and race, outer bearing (L68149) and race, grease seal, grease cap, and lug nuts (not included). Galvanized finish is rust resistant. Great Prices for the best trailer hubs and drums from Dexter. Trailer Idler Hub Assembly for 4,200-lb Axles - 5 on 4-1/2 - Galvanized part number DX45BR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Dexter Trailer Hubs and Drums
- DX45BR
Highlights
Built to Handle Wet, Salty Conditions: Galvanized, marine-grade hub resists rust for long life.
Fits 4,200-lb Axles: For idler axles using L68149 inner and outer bearings and matching races.
5 on 4-1/2" Bolt Pattern: Works with 13"–17-1/2" wheels using 1/2" studs.
Ready for Reliable Towing: Includes races; Bearings sold separately; uses 010-172-00 grease seal (sold separately) and 2.560" grease cap (sold separately).
Proven Durability: Sturdy iron hub rated for 2,100-lb capacity and certified to QAI and CSA standards.
Features to know about
Built to Handle Harsh Water Conditions: Galvanized Marine-Grade Protection
Saltwater and moisture can eat through a hub in no time, but this marine-grade assembly is built to stand up to it. The galvanized finish offers excellent corrosion resistance and helps prevent rust even after repeated water exposure. It’s the kind of durability you want when your trailer sees wet ramps or long hauls in damp conditions.
Ready for Steady Loads: Designed for 4,200-lb Axles
This hub is made for consistent towing strength. It fits 4,200-lb axles and carries a 2,100-lb capacity per hub. The sturdy iron construction gives it the backbone to handle heavy use day after day without flex or fatigue.
Smooth Fit with Matching Bearings: Precision L68149 Setup
Both the inner and outer bearings use the same L68149 spec with a 1.378" inner diameter, so you get a uniform fit that keeps rolling resistance low. The pre-installed L68111 races are set from the factory so you don’t have to hammer them in. Just add your bearings, grease seal (010-172-00), grease cap, and lug nuts (all sold separately), and it’s ready to mount.
Simple Compatibility and Wheel Sizing: 5 on 4-1/2 Bolt Pattern
The bolt circle makes wheel matching straightforward. With a 5 on 4-1/2" pattern and 1/2" diameter x 1-5/16" long studs, it fits wheel sizes from 13" up to 17-1/2". That flexibility makes it easy to pair with common trailer wheel setups without extra measuring or guesswork.
Built Right and Certified Safe: QAI and CSA Approved
Each hub meets QAI and CSA certification standards for quality and safety. That means it’s been tested for performance before it ever hits your axle, giving you confidence every time you tow.
Specs
Weight and Capacity
Application: 4,200-lb trailer axles
Weight capacity: 2,100 lbs
Dimensions
Wheel size: 13" to 17-1/2"
Bolt pattern: 5 on 4-1/2"
Wheel stud dimensions: 1/2" diameter x 1-5/16" long
Grease cap flange diameter: 2.560"
Warranty
Limited warranty: 1-year
Bearing, Race, and Seal Information
Bearings (sold separately):
Inner bearing: L68149 (1.378" inner diameter)
Outer bearing: L68149 (1.378" inner diameter)
Races (included):
Inner race: L68111
Outer race: L68111
Grease seal (sold separately): 010-172-00
Inner diameter: 1.680"
Outer diameter: 2.565"
Determining the Bolt Pattern
Description: 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.
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.)
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.)
Alternative method: 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"
Determining Bolt Pattern
1. Count the lug holes
Look at the wheel hub or the back of the wheel and count how many lug holes there are(also called bolt holes).
Common configurations include: 4-lug, 5-lug, 6-lug and 8 lug
2a. For even lug counts (4-lug, 6-lug, 8-lug)
Measure from the center of one lug hole directly across to the center of the hole opposite it.
Common configurations: 4 on 4", 6 on 5.5", 8 on 6.5"
2b. For odd lug counts (5-lug)
Measure from the center of one lug hole to the outer edge of the hole directly across (not center-to-center since there's no directly opposite hole).
Common configurations: 5 on 4.5" (most popular), 5 on 5", 5 on 4.75", 5 on 5.5"
K08-447-05 Dexter Trailer Idler Hub Assembly for 4.2K Axle - 5 on 4-1/2 - Galvanized
Hey Don! For a replacement you can use the Trailer Idler Hub Assembly for 4,200-lb Axles # DX45BR. This has a 5 on 4-1/2 bolt pattern with # L68149 inner and outer bearings. It also has a galvanized finish which will be perfect for your boat trailer.
Any big trips coming up with your boat? view full answer...
Hello again Allen. I wasn't able to find any references for those part numbers. Must be an older TDE number, but I think you are on the right track with the Dexter Trailer Idler Hub Assembly # DX45BR. This uses the L68149 inner and outer bearings, 5 on 4-1/2" bolt pattern and it'll work with the 10" Kodiak rotors. view full answer...
Hey Mark! We have a hub and rotor assembly with that bearing combination but it is designed for a specific axle with a shorter spindle. The only option would be to use the Trailer Idler Hub Assembly # DX45BR.
However, these hubs are rated for 4,200 lb axles so you're going to lose 400 lbs of capacity between the two axles with these hubs installed. These also have a 5 on 4-1/2 bolt pattern so it sounds like new wheels would be required if the # DX53WR with a 6 on 5-1/2 bolt pattern were... view full answer...
Thanks for the information Bob! The Trailer Idler Hub Assembly item # DX45BR is the only non-braking hub available that works with item # L68149 inner and outer bearings. It has a 5 on 4-1/2 bolt pattern and is galvanized for corrosion resistance. It works with 13"–17-1/2" wheels.
The Trailer Idler Hub Assembly item # DX45BR comes with preinstalled item # L68111 races. These races do work with item # L68149 bearings. It will fit your Ranger Trail's 1.376" straight spindle regardless of... view full answer...
Hey Allen. Yes, the Dexter Idler Hub # DX45BR will work with the 10" Kodiak slip-on rotors, provided the rotor has the same 5 on 4-1/2" bolt pattern.
The Grease Seal Kit # DX49CR will fit the # DX45BR hubs. You'll just want to make sure the 1.719" ID matches up with your spindles. That is the standard seal size for a 3,500 lb axle.
Do you know the weight capacity of each axle? view full answer...
Hey Ryan, thanks for the information! The Trailer Idler Hub Assembly item # DX45BR is the only non-braking hub we have available that works with item # L68149 inner and outer bearings. It has a 5 on 4-1/2 bolt pattern and is galvanized for corrosion resistance. It works with 13"–17-1/2" wheels.
The Trailer Idler Hub Assembly item # DX45BR comes with preinstalled item # L68111 races. These races do work with item # L68149 bearings. It will fit your Ranger Trail's 1.376" straight spindle... view full answer...
Info for this part was:
Updated by:
Wilson B
Edited by:
Daron K
Installed by:
Andy C
Written by:
Kim H
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