What Hub do I Need to Replace My DICO 40825 Hub on My Boat Trailer?
Updated 10/27/2025 | Published 03/11/2025
Products Featured in This Question
Question:
I need a replacement for a DICO 40825 hub off a boat trailer the spindle is 1 1/16 then steps up to 1 1/4 where the seal goes
asked by: Mike B
Expert Reply:
Hello Mike,
I am happy to get you into the right trailer hub. I am not able to find any information on the DICO 40825. From the measurements you provided it sounds like you have a straight spindle so both your inner and outer bearing are 1.063" I.D. making them bearing # L44649, which means you have a 2,000 pound axle. So you will want the Easy Grease Trailer Idler Hub Assembly # AKIHUB-545-2-G-EZ-2K which is a 5 on 4 1/2" bolt pattern (for 4 on 4 bolt pattern # AKIHUB-440-2-G-2K). The issue that I am running into is that the grease seal is a 1.50" ID and not 1.25" like you measured. I attached an image so you can double check your measurements, it helps to use a digital caliper like # PTW80157 to get the most accurate measurement.
Please confirm the measurements by commenting below so I can ensure we are getting you the right fit. Also, if you are getting a 1.25" at the seal, I would like to know the age of the trailer. Sometime with older boat trailers they do not make the hubs for it which results in needing a new axle. I appreciate your time, and look forward to hearing back from you.
(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 - Threaded
- 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
- Search Results: bow stop
- Search Results: bearing buddy 1980a
- Video: CE Smith Trailer Hub Assembly w/ Carrying Case for 2,700-lb Axles Review
- Q&A: Replacement Boat Trailer Idler Hub with 4-1/4" Depth and 1-1/16" Spindle
- Search Results: 471750
- Search Results: bearing buddy bra
- Search Results: bearing buddy covers
- Search Results: bearing buddy caps
- Search Results: 45263 trailer hub
- Shop: Trailer Idler Hub Assembly for 2,000-lb Axles - 4 on 4 - Galvanized
- Shop: Bearing Buddy Bearing Protectors - Model 1980A w/ Auto Check - Chrome Plated (Pair)
- Shop: Yates Y-Style Bow Stop for Boat Trailers - Heavy-Duty Rubber - 4" Span - 3/8" Shaft
- Shop: CE Smith Trailer Hub Assembly w/ Carrying Case for 2,700-lb Axles - 4 on 4 - Pre-Greased
- Article: 5 Tell-Tale Signs It’s Time to Replace Your Trailer’s Leaf Springs
- Video: A Closer Look at the Trailer Axle with Idler Hubs
- Video: Review of the Trailer Idler Hub Assembly for 2,000-lb Axles
- Video: Measuring To Choose The Right Trailer Axle
- Shop: CE Smith Trailer Hub Assembly w/ Carrying Case for 2,700-lb Axles - 5 on 4-1/2 - Pre-Greased
- Shop: Trailer Idler Hub Assembly for 2,000-lb Axles - 5 on 4-1/2 - Galvanized
- Shop: GE Appliances Low-Profile RV AC System w/ Heat Pump - 15,000 Btu - Non-Ducted - Black - R32
- Q&A: How to Choose a Replacement Axle for a 1997 Shorelander Boat Trailer
- Q&A: Replacement Double Lip Grease Seal for National Seal 471750
- Q&A: What Brands of Bearings are Available
- Q&A: Replacement Bearing Solution for DICO Hub 45263
- Q&A: Availability Of Replacement Hub For Dico 45263
- Video: Feature Review Timken Grease Seal
- Video: Let’s Check Out the Grease Seal
- Video: CE Smith Trailer Hub Assembly w/ Carrying Case for 2,700-lb Axles Spec Review
- Q&A: Looking for Hub for 1999 Jayco Qwest 10
- Article: Trailer Tire Sizing
on Trailer Hubs and Drums
Kate F.
10/27/2025
Hey Mike, were you able to recheck those spindle and seal measurements on your boat trailer hub? Once you confirmed them, did one of the 2,000‑lb hub assemblies end up fitting correctly? Your update could make it easier for others trying to match older trailer hubs.