Replacement Bearings and Grease Seals for Dexter 7k Axle on 2021 Montana 3120RL Legacy
Updated 10/22/2025 | Published 09/21/2025
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Question:
I have Dexter 7000 lb tandem axles with disc brakes on my 2021 Montana 3120 legacy. I am wanting to get bearings and seals. Can you tell me which ones will go for my Adele’s. Thank you.
asked by: Katherine
Expert Reply:
Hi Katherine; Dexter 7k axles will use # 14125A and # 25580 bearings but the grease seal can vary. It either has a 10-36 grease seal # RG06-070 with a 2.25" inner diameter (ID) or # GS-2125DL with a 2.125" ID.
Normally I would say to send me your axle tag information and I can verify with Dexter but they haven't been responding lately so it might take a while. The fastest way would be to pull the hub and either look for a part number on your existing grease seal or measure the ID. If you want a full bearing kit we have the # BK3-200 with the 10-36 seal or # BK3-210 with the GS-2125DL.
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Product Page this Question was Asked From
Replacement Trailer Wheel Bearing Kit, 14125A/25580 Bearings, 14276/25520 Races, Seal 10-36
- Trailer Bearings Races Seals Caps
- Bearings
- Standard Bearings
- Bearing Kits
- Bearing 14125A and 25580
- Race 25520 and 14276
- 7000 lbs Axle
- etrailer
more information >
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Robin H.
10/22/2025
Hi Katherine, how did things go with the bearings and seals for your Montana’s Dexter axles? Were you able to confirm which grease seal size matched your setup? Your update could make it easier for others working with the same axles.