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What Replacement Bearings and Seals do I Need for My 3500k Double Axles?


2021 No Boundaries Forest river, 19.6 double axel. Looking for the correct replacement kit for a 12k mile trip. This one? Bearing Kit, 14125A/25580 Bearings, GS-2125DL Seal Item # BK3-210


Expert Reply:

Without know exactly what weight capacity of double axles you have on your 2021 No Boundaries Forest River, I can confirm that the kit # BK3-210 that you referenced will only fits 7k axles.

One way you can confirm whether you have 7k axles on your trailer is by looking at the axle sticker. If that is unavailable, you can always measure your spindles with calipers # 301-17068 and compare the measurements with the attached chart.

However, you most likely have 3500 pound axles. If this is the case, you will need the Hub Bearing Kit for Lippert, Dexter, and Al-Ko Axles - 3,500 lb with #84 Spindle # BK2-100. Another way to confirm if you have 3500 pound axles is if the axle tubes measure 2-3/8 inches in diameter.

Axle Parts/Measurements Chart
Axle Parts/Measurements Chart
(click to enlarge)
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