[Functionality] Maintains the sealing pressure of the cooling system to ensure that the coolant will not boil and overflow at high temperatures, maintains stable internal pressure, reduces mechanical failures due to abnormal pressure, prevents evaporation or leakage of coolant, safeguards the engine from normal heat dissipation, and avoids the risk of overheating
[Compatible With] 2011-2020 Toyota Sienna; 2010-2015 Lexus RX350; 2010-2015 Lexus RX450h. This Coolant Reservoir Cap offers a perfect fit, making installation straightforward and efficient without any modifications
[OE Number] 16405-31070 16405-0P040. Please check the part numbers whether it suits your vehicle before purchasing
[DIY Friendly Installation] No need for professional tools or techniques, simple and easy to operate design, suitable for vehicle owners to replace by themselves, saving maintenance costs
[Premium Durability] High-quality engineering plastics are used to reduce weight while maintaining structural strength, which is suitable for frequent switching operations and prevents leakage under severe bumpy road conditions