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Starting at $7.95, AutoBuffy stocks 2 wheel bearing retaining rings from SKF and ACDelco. This small snap ring or circlip locks the wheel bearing into its hub or knuckle bore, preventing axial movement. When it fails, corrodes, or distorts, the bearing can shift under load, causing noise, play, and accelerated bearing wear that puts the wheel at risk.
Retaining rings for wheel bearings differ by design (external circlip vs. internal snap ring vs. threaded lock ring), by diameter and thickness to match the specific hub or knuckle bore, and by material grade. Buying the correct ring means matching those dimensions precisely — an undersized or softer ring will not hold bearing preload under cornering and braking forces.
| Option | Best for | What you get |
|---|---|---|
| OEM-spec replacement circlip | Restoring factory fit and holding force exactly as engineered | Correct diameter, groove width, and spring-steel temper to match original specs for the Mitsubishi Asx |
| Heavy-duty / thicker-gauge snap ring | High-mileage vehicles, towing use, or corners with a history of repeat bearing failure | Increased radial stiffness that resists distortion under higher axial loads; may require groove inspection before fitting |
| Full bearing kit (bearing + retaining ring included) | Complete hub rebuild where the old ring is corroded, deformed, or unknown-grade | Matched components from one supplier; eliminates the risk of a mismatched ring paired with a new bearing |
| Threaded lock ring / spindle nut retainer | Front hubs that use a threaded retaining design rather than a circlip groove | Thread-engaging steel collar that replaces the snap ring function; critical to use the correct thread pitch for the Mitsubishi Asx spindle |
After the wheel, brake components, and hub or knuckle are accessible, use the appropriate snap-ring pliers to expand or compress the retaining ring and lift it free of its groove. Inspect the groove for corrosion or deformation before installing the new ring — the ring must click fully flush into the groove with no gap. Reassemble all components and verify there is no wheel play before returning the Mitsubishi Asx to the ground.