Tight Plug

About this product

The Tight Plug (#90331-21003), an essential Drive-Chassis component in the Transfer Case & Extension Housing system, plays a pivotal role in maintaining the system's integrity. Its primary function involves restraining unnecessary leakage of lubricants, ensuring smooth operation of the system, thus preserving the longevity of interconnected parts. Genuine Toyota parts, like the Tight Plug (#90331-21003), are critical for vehicle compatibility and are covered by Toyota's authentic parts warranty. Over time, however, the Tight Plug (#90331-21003) may wear out or get clogged, potentially leading to lubricant leaks and system inefficiencies. In extreme cases, a faulty plug could cause major mechanical failures. Replacing this component periodically is, therefore, vital. A well-functioning Tight Plug (#90331-21003) contributes to the overall system efficiency and safety, mitigating the risk of costly damage and keeping your vehicle running at peak performance.
Brand Toyota Genuine
Part Number 90331-21003

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