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Replacement Electric Brakes and Hub/Drum Assemblies  

Updated 09/02/2025 | Published 08/06/2025

Question:

We have a dexter axle that we are needing to replace the brake assemblies and hubs on. AXLE,6600 D70-SBSA-87.00-68.50-US-EZL-BRBU-8LUG-ABSTA-12x2BRK-w/4000 spring DEX 11278362 Can I please get assistance with part numbers?

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Expert Reply:

Thanks for your question, Stefanie!

There aren’t any hub-and-drum assemblies rated specifically for 6.6K, so based on the info, it’s most likely that you have a 7K axle.

I'm not 100% certain on your wheel stud size, but for 7K axles, we typically see either 1/2" or 9/16" studs. Here are the two hub options based on each size:

1/2" studs – part # 42866UC3-EZ
9/16" studs – part # 8-219-13UC3

To go with those hubs, the matching electric brake kit would be part # 23-464-465. If you can confirm the stud size, I’ll be happy to make sure to get you set up with the right parts.

I'm curious what kind of trailer you have.

expert reply by:
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Gwendolyn Y
Gwendolyn Y. profile picture
Etrailer Expert

Gwendolyn Y.

9/2/2025

Hey Stefanie, did you manage to confirm the stud size for your axle and find the right parts? I'm asking because it could help others in a similar situation.

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