Availability Of 3-3/8" Deep Hubs For Boat Trailer
Updated 10/27/2025 | Published 02/27/2025
Question:
Im trying to find hubs for my boat trailer. It is an odd size where its a 4 on 4, with the hub only 3 3/8 long overall. The Flange is 5/8 thick and from the outside of the hub to the flange is 1 3/4. From the back side of the flange to the inner edge of the hub is 1. It appears that from the photos none of your hubs may work. Do you have hubs that will work? Thanks
asked by: James S
Expert Reply:
Hello James, thanks for reaching out. It sounds like you are looking for a hub for an older trailer. A lot of older trailers used these "shorter" hubs like you are describing. Unfortunately, this type of hub is obsolete now. All of our 4 on 4 idles hubs will be about 4-1/2" deep, so they would not work for you.
At this point the next step would be to look at replacing your spindles with something more modern, or replacing your axle entirely. Otherwise you are going to have a very hard time finding parts going forward. Replacing spindles can be tricky since it requires special equipment. Changing the axle can be done, but we would need to look at what weight capacity and axle length you need.
If this is something you want to look into, just reply below and I am happy to help point you in the right direction.
(click to enlarge)
Product Page this Question was Asked From
CE Smith Trailer Hub Assembly w/ Carrying Case for 2,500-lb Axles - 4 on 4 - Pre-Greased
- Trailer Hubs and Drums
- Idler Hub
- Pre-Greased
- Standard
- L44643 / L44643
- Standard Grade
- For 2500 lbs Axles
- 1/2 Inch Stud
- 4 on 4 Inch
- 10 Inch Wheel
- 12 Inch Wheel
- 13 Inch Wheel
- CE Smith
more information >
Continue Researching
- Q&A: Does Ducted Furrion Chill Cube With Heat Pump Include Remote
- Q&A: Replacement Galvanized Hub For a Dexter 8-259 with a 1" Straight Spindle
- Q&A: Recommended Leaf Springs, U-Bolts, and Suspension Bolts for a 2,000 lbs 1-3/4" Diameter Axle
- Q&A: Replacement Dexter Hub for 8-91A Hub
- Q&A: Correct Hub for Dexter EZ Lube 3,500-lb Axle
- Q&A: Double Lip Grease Seals to Replace Transcom Seal 12192TB
- Article: Most Popular Wheel Bearings
- Q&A: Replacement Hub For BT-100 Trailer Idler Hub On a 1" Straight Spindle
- Article: Trailer Lighting Requirements
- Article: How to Tell the Weight Rating of a Trailer Axle
- Article: Printable Trailer Bolt Hole Pattern Template
- Article: How To Measure And Replace Everything In Your Hub Assembly
- Article: Best Boat Trailer Jacks
- Article: Trailer Tire Sizing
Jesse M.
10/27/2025
Hey James, did you end up looking into replacing your spindles or axle for your boat trailer? Knowing which route you took could help others with older trailers facing the same issue. Your update could make it easier for the next person trying to match obsolete hubs.