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Replacement Bearing Kit Recommendations for a 1972 Airstream Overlander


I am purchasing the 12 brakes AKEBRK-7-SA Can you please advise which bearing kit should be used? I am installing the brakes on a 72 Airstream Overlander


Expert Reply:

If you have standard size axles that you are installing the Electric Trailer Brake Kit # AKEBRK-7-SA on then you can choose from the following options:

5,200 lb Axle - Kit # BK3-310 (Grease Seal 2.125" ID) or Kit # BK3-300 (Grease Seal 2.250" ID)
6,000 lb Axle - Kit # BK3-110 (Grease Seal 2.125" ID) or Kit # BK3-100 (Grease Seal 2.250" ID)
7,200 lb Axle - Kit # BK3-210 (Grease Seal 2.125" ID) or Kit # BK3-200 (Grease Seal 2.250" ID)

Since you do have an older Airstream Overlander you may want to check the B, C, and D locations (see picture) of your spindle to ensure that these are correct. You can do this by using a Digital Caliper # 301-17068.

The inner bearing has an ID of 1.750", the outer bearing has an ID of 1.250", and the grease seal IDs are shown with the above part numbers.

These kits and brakes will work great with a hub and drum assembly like part # 8-219-4UC3.

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expert reply by:
Jon G

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