TOYOTA 90316-T0002 Wheel Hub Oil Seal

The Toyota 90316-T0002 is a genuine (OEM) wheel hub oil seal (OEM designation: SEAL, TYPE D OI), which is a critical sealing component of the vehicle's chassis system. This premium-quality, original Toyota part ensures proper lubrication and protection of the wheel hub bearing against external elements.

Technical Features and Function

The primary purpose of the wheel hub oil seal is twofold:

• Lubricant Retention: Prevents high-temperature bearing grease or lubricating oil within the wheel hub bearing from leaking, ensuring continuous and optimal lubrication.
• Contaminant Exclusion: Forms an effective barrier against water, mud, dust, and other road contaminants that would cause premature wear or bearing failure.

The "Type D" design designates a radial shaft seal equipped with a specialized dust lip, offering enhanced protection even under harsh operating conditions. Genuine Toyota OEM manufacturing technology guarantees a precise fit, outstanding heat resistance, and long service life.

Signs of Wear or Failure

In the event of seal aging or damage, the following symptoms may occur:

• Greasy or oily deposits on the inside of the wheel hub or on brake system components (which can compromise braking efficiency).
• Abnormal rumbling, humming, or grinding noises from the wheel while driving (a sign of bearing wear caused by lubricant loss).
• Overheating of the wheel bearing.

To ensure safe and quiet chassis operation, a damaged or leaking seal should be replaced without delay. Inspecting the condition of the wheel bearing is also recommended during replacement.