Replacement Bearing Kit Recommendations for a 1972 Airstream Overlander
Updated 04/16/2025 | Published 10/30/2017
Products Featured in This Question
Question:
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
asked by: Marc H
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.
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.
Product Page this Question was Asked From
etrailer Electric Trailer Brakes - Self-Adjusting - 12" - Left/Right Hand - 5.2K to 7K
- Trailer Brakes
- Electric Drum Brakes
- Standard Grade
- Self Adjust
- 12 x 2 Inch Drum
- 5200 lbs Axle
- 6000 lbs Axle
- 7000 lbs Axle
- 14-1/2 Inch Wheel
- 15 Inch Wheel
- 16 Inch Wheel
- etrailer
more information >
Continue Researching
- Search Results: brake hoses
- Search Results: wheel cylinder
- Search Results: titan model 10 master cylinder
- Shop: Bearing Kit, 15123/ 25580 Bearings, 10-36 Seal
- Shop: DeeMaxx Hydraulic Brake Line - Rubber - 3/16" Brass Male Inverted Flares - 40" Long
- Search Results: advent air rv air conditioners
- Shop: Hub Bearing Kit for Lippert, Dexter, and AL-KO Axles - 3,500 lb with #84 Spindle
- Shop: Replacement Master Cylinder and Push Rod Assembly for Drum Brakes - Model 10 and 20 Actuators
- Search Results: trailer brakes
- Shop: Kodiak 12" Hub-and-Rotor Assembly - 6 on 5-1/2 - Dacromet - 5,200 lbs to 6,000 lbs
- Shop: Hydrastar Disc Brake Kit w/ Actuator for Tandem Axle Trailers - 12" Rotor - 6 on 5-1/2 - 6K
- Search Results: hub and rotor trailer brakes
- Search Results: trailer bearings races seals caps
- Shop: Grease Seals 10-36 (pair)
- Video: Bearing Kit, 15123/ 25580 Bearings, 10-36 Seal Review
- Q&A: Which Replacement Air Conditioner for Advent AC150 Unit on 5th Wheel Trailer
- Video: Review of Hydrastar Trailer Brakes - Tandem Axle Disc Brake Kit with Actuator - HYD74VR
- Video: Demco Hydraulic Brake Line Kit for Tandem Axle Trailers Review
- Video: Hands-On with the Replacement Wheel Cylinder for 10" and 12" Free Backing Brakes
- Video: Review of the Demco Hydraulic Brake Line Kit for Tandem Axle Trailers
- Q&A: Replacement Components For An Advent Air RV Air Conditioner Rooftop Unit
- Video: Titan Master Cylinder Assembly Installation
- Video: Replacement Wheel Cylinder for 10" and 12" Free Backing Brakes Review
- Q&A: Replacement Master Cylinder Recommendation for Titan Model 6 Drum Actuator T4079200
- Q&A: What is the Best Grease for Trailer Bearings
- Q&A: Bearings and Races for 7,000 Pound Trailer Axle
- Q&A: Replacement Fan Blade that Fits Advent Air AC Unit AC150
- Q&A: Will Advent Air Conditioner ACM150 Replace AC150
- Article: Most Popular Wheel Bearings
- Article: How to Tell the Weight Rating of a Trailer Axle
Michael
4/16/2025
what is difference between bk3-300 and bk3-100 dont they have the same size bearing and seals?