42423KK010 Toyota RETAINER RR AXLE BE, Price: 14.14$, Weight: 0.146kg

Rear Axle Bearing Retainer Ring for Toyota

This precision steel collar secures the rear wheel bearing to the axle shaft on many Toyota RWD and 4x4 models. It keeps the bearing seated, maintains preload, and holds the oil seal and tone ring in the correct position for quiet, safe operation. Built from heat-treated steel with tight tolerances for long life and stable clamping force.

Why you need it

Without a solid retainer, the rear hub can develop play. This part locks the bearing in place, prevents axle walk-out, protects the seal from wear, and keeps brake and ABS geometry aligned. It’s essential for smooth rear wheel rotation and even tire wear.

How it works ⚙️

The ring is press-fitted onto the axle shaft against the bearing’s inner race. Its interference fit clamps the bearing between the shaft shoulder and the collar. Working with the backing plate and axle seal, it eliminates axial movement and resists torque, heat, and vibration from the differential.

What if it fails ❗

Expect humming from the rear, wheel wobble, ABS warnings, and gear oil or grease leaking onto brakes. Continued driving can score the shaft, overheat the bearing, cause brake fade, uneven tire wear, or in extreme cases axle displacement.

Tech notes

Single-use part—replace when removed. Press on with a hydraulic press; never hammer. Install chamfer toward the bearing. Always renew the axle seal and inspect the bearing together. Verify fitment by VIN for exact Toyota applications.