Yukon AK SET20 Tapered Rear Axle Bearing & Seal Kit - 3.150" OD
AK SET20
The Yukon AK SET20 Tapered Rear Axle Bearing & Seal Kit provides the bearing and seal needed to service one side of a compatible rear axle assembly. Whether you're replacing a noisy bearing, repairing a leaking axle seal, or refreshing an axle during a drivetrain rebuild, this kit helps restore proper axle shaft support and sealing. The tapered roller bearing design handles both radial and axial loads, making it a practical choice for compatible truck, Jeep, and custom rear axle applications.
With a 3.150" bearing outside diameter and 1.562" inside diameter, this Yukon bearing set must be matched to the axle housing, shaft bearing journal, and retention configuration. The included axle seal allows both components to be serviced together instead of reusing an old seal during installation. Before ordering, verify the bearing dimensions and installed axle configuration to make sure the kit is correct for your build.
Includes:
- (1) Tapered Roller Rear Axle Bearing
- (1) Rear Axle Seal
Important: This kit services one axle side. Order quantity (2) to service both sides of a compatible axle. Bearing dimensions alone do not guarantee fitment; confirm the axle model, bearing retention method, and seal compatibility before ordering.
Specifications
| Manufacturer | Yukon Gear & Axle |
|---|---|
| Part Number | AK SET20 |
| Product Type | Rear Axle Bearing & Seal Kit |
| Bearing Type | Tapered Roller |
| Bearing Outside Diameter | 3.150" |
| Bearing Inside Diameter | 1.562" |
| Axle Position | Rear / One Side |
| Axle Bearing | Included |
| Axle Seal | Included |
| Installation Type | Axle Bearing & Seal Replacement |
| Primary Application | Rear Axle Bearing Service & Seal Replacement |
| Quantity | One Bearing & Seal Kit / One Axle Side |
Fitment
This kit is intended for rear axle applications requiring the specified tapered roller bearing and matching axle seal. Confirm the exact axle application against Yukon part number AK SET20 before ordering.
| Fitment Requirement | Specification |
|---|---|
| Bearing Type | Tapered Roller |
| Bearing Outside Diameter | 3.150" |
| Bearing Inside Diameter | 1.562" |
| Axle Position | Rear |
| Axle Application | Verify Against Yukon AK SET20 |
| Service Quantity | One Axle Side |
Fitment Notes:
- Designed for compatible rear axle bearing and seal applications
- Requires the correct tapered roller bearing configuration
- Verify bearing outside diameter, inside diameter, and width
- Confirm axle housing bore and axle shaft bearing journal dimensions
- Verify axle bearing retention method and seal compatibility
- Includes one bearing and one seal for a single axle side
- Order quantity (2) to service both sides of a compatible axle
- Not a universal replacement for every heavy-duty rear axle
Builder Note: Bearing dimensions are only part of the fitment check. The bearing width, retention method, seal dimensions, and housing design also need to match. If you're working with a custom or axle-swapped housing, identify the existing bearing and seal before ordering replacements.
FAQ
What comes in the Yukon AK SET20 bearing kit?
This kit includes one tapered roller rear axle bearing and one axle seal. It is intended to service one side of a compatible rear axle assembly.
What are the bearing dimensions?
The supplied bearing specifications list a 3.150" outside diameter and 1.562" inside diameter. Confirm the bearing width and complete axle application before ordering.
What is the advantage of a tapered roller axle bearing?
Tapered roller bearings are designed to support both radial and axial loads. When installed in a compatible axle assembly, they provide stable axle shaft support and reliable operation under normal driving and drivetrain loads.
Will this kit fit my truck or Jeep?
Fitment depends on the installed axle assembly rather than the vehicle model alone. Match Yukon part number AK SET20 to the manufacturer's application listing and verify the bearing dimensions, seal, and retention configuration.
Does this kit include bearings and seals for both sides?
No. One kit includes one bearing and one seal for a single axle side. Order quantity (2) to service both sides of a compatible rear axle.
Can a worn axle bearing cause a gear oil leak?
Yes. Excessive axle shaft movement from a worn bearing can affect seal operation and contribute to leaks. Damaged seal surfaces, improper installation, and worn seals can also cause gear oil leakage.
Should I replace the axle seal when replacing the bearing?
Replacing the seal during axle bearing service is good practice, particularly when the original seal has been disturbed or shows signs of wear. This kit includes both components for convenient service.
What should I inspect before installing a new axle bearing?
Inspect the axle shaft bearing journal, housing bore, seal contact surface, and bearing retaining components. Look for scoring, grooves, corrosion, or damage that could shorten bearing life or prevent proper sealing.
Does this bearing kit include axle shafts?
No. This listing includes only the tapered roller axle bearing and matching seal. Axle shafts and additional installation hardware are not listed as included.