Find the correct replacement hub for your EZ Loader boat trailer using factory hub part numbers, wheel lug count, inner and outer bearings, matching races, and rear hub seals. This identification guide covers 5-lug, 6-lug, and 8-lug hub and brake assemblies.
Important: Lug count and bearing numbers are starting points, not guarantees of fitment. Confirm the original hub, spindle dimensions, rear seal, brake configuration, and axle specifications before ordering.
How to Identify Your EZ Loader Trailer Hub
- Count the wheel studs: 5, 6, or 8.
- Identify grease or oil-bath lubrication.
- Determine whether you have an idler hub, hub/drum, or disc brake rotor.
- Read the part numbers stamped on the inner and outer bearings.
- Identify the bearing races and rear hub seal.
- Compare the specifications with the factory tables below.
- Verify the spindle measurements before purchasing.
How to Measure Your Trailer Spindle
5-Lug EZ Loader Hub Identification
These seven factory-listed 5-lug assemblies include grease hubs, oil-bath hubs, hub/drum assemblies, and integral disc brake rotors. Match the EZ Loader hub part number and all bearing and seal specifications.
| EZ Loader Hub Part # | Hub Description | Inner Bearing | Inner Race | Outer Bearing | Outer Race | Rear Seal Part # | Seal Dimensions* |
|---|---|---|---|---|---|---|---|
| 250-031432 | BT150A 1,350 lb - Grease | L44649 | L44610 | L44649 | L44610 | 250-015208 | 1.98 - 1.25 |
| 250-031438 | UHI 1,850 lb - Grease | L68149 | L68111 | L44649 | L44610 | 250-031468 | 2.56 - 1.68 |
| 250-029194 | BT150A 1,350 lb - Oil | L44649 | L44610 | L44649 | L44610 | 250-015208 | 1.98 - 1.25 |
| 250-029195 | UHI 1,850 lb - Oil | L68149 | L68111 | L44649 | L44610 | 250-031468 | 2.56 - 1.68 |
| 250-029199 | UHI 3,700 lb - 10" Hub/Drum, Oil | L68149 | L68111 | L44649 | L44610 | 250-031468 | 2.56 - 1.68 |
| 250-034127 | UFP 3,700 lb - 10" Integral Rotor | L68149 | L68111 | L44649 | L44610 | 250-031468 | 2.56 - 1.68 |
| 250-034310 | UFP 4,300 lb - 10" Integral Rotor | L68149 | L68110 | L68149 | L68110 | 250-032616 | 2.33 - 1.68 |
6-Lug EZ Loader Hub Identification
These four factory-listed 6-lug assemblies include grease and oil-bath configurations. Some use different outer bearings despite sharing the same inner bearing and rear seal.
| EZ Loader Hub Part # | Hub Description | Inner Bearing | Inner Race | Outer Bearing | Outer Race | Rear Seal Part # | Seal Dimensions* |
|---|---|---|---|---|---|---|---|
| 250-031797 | HRM 5,500 lb - Grease | 25580 | 25520 | LM67048 | LM67010 | 250-020844 | 3.38 - 2.13 |
| 250-029196 | HRM 5,500 lb - Oil | 25580 | 25520 | LM67048 | LM67010 | 250-020844 | 3.38 - 2.13 |
| 250-034147 | HRM 6,000 lb - Grease | 25580 | 25520 | 15123 | 15245 | 250-020844 | 3.38 - 2.13 |
| 250-029200 | HRM 5,500 lb - 12" Hub/Drum, Oil | 25580 | 25520 | LM67048 | LM67010 | 250-020844 | 3.38 - 2.13 |
8-Lug EZ Loader Hub & Brake Assemblies
The factory reference includes the following 8-bolt integral rotor and disc brake kit assemblies. The 13" disc brake kit should not be treated as an individual replacement hub without confirming its contents.
| EZ Loader Part # | Assembly Description | Inner Bearing | Inner Race | Outer Bearing | Outer Race | Rear Seal Part # | Seal Dimensions* |
|---|---|---|---|---|---|---|---|
| 250-034128 | UFP 7,000 lb - 12" Integral Rotor | 25580 | 25520 | 14125A | 14276 | 250-020844 | 3.38 - 2.13 |
| 250-031970 | 13" Silver CAD Disc Brake Kit | 25580 | 25520 | 14125A | 14276 | 250-020844 | 3.38 - 2.13 |
Factory chart notes: Bearing refers to the cone; race refers to the matching cup. *Seal dimensions are reproduced as paired values from the supplied reference chart. The chart does not clearly label their dimensional order; confirm the seal inside diameter, outside diameter, and units before ordering. Part 250-034310 is shown with race L68110 in the supplied chart and should be independently confirmed before ordering.
Understanding Bearings, Races & Rear Hub Seals
Inner Bearing: The bearing positioned toward the rear of the hub, nearest the axle and rear seal.
Outer Bearing: The bearing positioned toward the spindle nut and hub cap.
Bearing Race: Also called a cup, this provides the hardened running surface for the tapered bearing rollers.
Rear Hub Seal: Helps retain lubricant and prevent contamination. The seal must match the hub bore, spindle sealing surface, and lubrication application.
Grease vs. Oil-Bath EZ Loader Hubs
Grease Hubs: Use approved wheel-bearing grease to lubricate the bearings. Regular inspection, correct bearing adjustment, and proper seal installation are important.
Oil-Bath Hubs: Use oil retained inside the hub. These assemblies require compatible rear seals, hub caps, and the correct lubricant level.
Do not assume grease and oil-bath assemblies are directly interchangeable simply because the bearing numbers match. Confirm the complete assembly before converting lubrication systems.
Read the EZ Loader Oil Bath Hub Maintenance Guide
Dexter vs. MTP / Lippert Rear Hub Seals
Different hub and axle manufacturers may use different rear seal dimensions or designs. Identifying the original component is important before selecting a replacement.
Dexter: Verify the existing seal number, inside diameter, outside diameter, sealing surface, and lubrication requirements.
MTP / Lippert: Our available factory identification information is limited. Provide the existing seal number, axle identification label, and spindle measurements for fitment review.
Important: The hub chart does not establish direct Dexter-to-MTP/Lippert seal interchangeability. Do not substitute seals based solely on appearance, wheel lug count, or a similar part number.
How to Measure Your EZ Loader Trailer Spindle
When hub or bearing numbers are missing, measure the inner bearing journal, outer bearing journal, and rear seal journal using a precision measuring tool. These measurements help confirm compatibility with the replacement hub.
How to Measure Trailer Spindle Size - Step-by-Step Guide
Frequently Asked Hub Identification Questions
Can I identify my hub using only the wheel lug count?
No. Lug count narrows the possible assemblies, but bearings, races, rear seals, spindle dimensions, and brake configuration must also match.
Are inner and outer bearings always the same size?
No. Some hubs use identical inner and outer bearings, while others use different bearing sizes. Verify both numbers.
Can grease and oil-bath hubs use the same rear seal?
Some factory-listed assemblies share rear seal part numbers, but that does not establish universal interchangeability. Verify the seal design and lubrication requirements.
What if my bearing numbers are unreadable?
Measure the spindle bearing journals and seal surface, and check the hub and axle identification markings. Use the spindle measurement guide or contact our parts counter.
Need Help Identifying Your EZ Loader Hub?
EZLoaderParts411 specializes in OEM EZ Loader boat trailer replacement parts. If you are uncertain which hub, bearing, race, or seal you need, contact our parts counter before ordering.
Please provide:
- Trailer year, model, and VIN, if available.
- Axle identification label or manufacturer.
- Wheel lug count: 5, 6, or 8.
- Grease or oil-bath configuration.
- Hub, rotor, and bearing part numbers.
- Rear seal number and spindle measurements.
- Clear photographs of the existing components.
Call: 843-683-5797
Email: Parts for EZ Loader
EZLoaderParts411 is operated by 411MarineCom, Inc and the 411Marine Family.
Fitment Notice: These factory-reference tables are provided for identification assistance. Production variations, axle replacements, and previous repairs may affect compatibility. Verify current part specifications and actual component dimensions before purchasing or installing replacement parts.