How to Determine Correct Hubs With 5 on 4-1/2 Bolt Pattern For Boat Trailer  

Question:

Expert Reply:

While you are off to a good start with the 5 on 4-1/2 bolt pattern, there's a few other things you'll need to find in order to determine the correct replacement hubs for your boat trailer (I was unable to find info regarding a B-168-G trailer).

First, you need to know the weight rating of your axle, and also what bearings your current hub has. You will need to take apart your current hub assembly and look at the bearings themselves; wipe away the grease and you should be able to see the part number stamped directly on them.

If you are unable to find them, you need to use digital caliper and measure your spindle to the thousandths of an inch where the bearings and grease seal ride. You can use the photo I've attached to see exactly where you need to measure.

For example, the Easy Grease Trailer Idler Hub Assembly # AKIHUB-545-2-G-EZ-2K is for 2,000 lb axles, uses inner bearing # L44649 and outer bearing # L44649 (1.063" inner diameter) and a grease seal with a 1.50" inner diameter.

If you get back to me with this information I'd be happy to try and help you find the correct hub; I have also added a link below to our entire selection of hubs with a 5 on 4-1/2" bolt pattern for you to come back to.

expert reply by: Kyle S

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Where to Measure on Trailer Spindle
(click to enlarge)