Wheel Bearing Kit for 2021 Keystone Fuzion 373
Updated 10/14/2026 | Published 10/08/2026
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Question:
Hi, I’m interested in repacking my wheel bearings on my 2021 Keystone Fuzion 373 5th Wheel toy hauler. What trailer wheel bearing kit do I need? Could you please point me to the correct kit that I need and grease please. FYI my rig has a total of two axles 7000 lb each, 4x tires.
asked by: Ruben V
Expert Reply:
Hey Ruben, welcome back! For your 2021 Keystone Fuzion 373 with 7,000 lb axles, the Bearing Kit # BK3-200 you were looking at is likely what you need. This includes the inner and outer bearings, races, and a 2.25" ID grease seal. You'll need one kit per hub, so four total.
However, some 7K axles use a smaller 2.125" seal, which would require the Bearing Kit # BK3-210 instead. If you can send me the serial number from your axle tag, or just send a picture of it, I can verify which seal is appropriate for your spindle.
If you want premium bearings, we also have the Timken Bearing Kits # TMK92VR (2.25" seal) and # TMK32VR (2.125" seal). For grease, I recommend the LubriMatic LMX # L11390.
Where are you headed next with the Fuzion once you repack your bearings?
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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
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on Trailer Bearings Races Seals Caps
Hi R.
10/9/2026
Here is the serial number you requested. Also sent you photos per your request. Dexter S/N: 612571236