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How to Find Correct Bearing Kit for a 2004 Four Winns Boat Trailer with 5,200 Lb Trailer Axle  

Question:

I am trying to locate replacement seals, bearings, races etc. for a 2004 Four Winns boat trailer. It is a model DO18190 with a 5,200 LB GWAR. It has a 6 Lug 5 1/2 inch bolt pattern. Can you help? Thanks

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Expert Reply:

There are two possible bearing kits for a 5,200 Lb Axle, the Bearing Kit part # BK3-300 or part # BK3-310. The difference between the two is the grease seal, the former has a 2.25" inner diameter and the latter a 2.125". Unfortunately, the only two ways to know which you have are either removing the hubs and measuring or by reaching out to the trailer manufacturer.

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Conner L

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