This is a genuine TOYOTA fuel tank cap assembly, part number 7730052020, specifically designed for US market vehicles. It plays a crucial role in the integrity of your vehicle's fuel system by providing a tight seal for the fuel tank. A properly functioning fuel cap is essential for preventing the escape of fuel vapors, which can contribute to air pollution and may cause your check engine light to illuminate if the seal is compromised. This assembly is manufactured to meet TOYOTA's high standards for quality and durability, ensuring a reliable fit and long-lasting performance. Replacing a worn or damaged fuel cap with this genuine TOYOTA part will help maintain your vehicle's emissions control system, improve fuel efficiency by preventing evaporative losses, and ensure the check engine light remains off due to a faulty evaporative emission system (EVAP).
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