This is a genuine TOYOTA replacement part, specifically the Cap Sub-assy for the reserve tank, with part code 1640525010. Designed to meet the exact specifications of your TOYOTA vehicle, this cap ensures the integrity of your coolant reservoir. A properly functioning reserve tank cap is crucial for maintaining the correct pressure within your cooling system. This prevents coolant evaporation and ensures optimal engine temperature regulation, safeguarding against overheating. Crafted from durable materials, this TOYOTA reserve tank cap is built to withstand the demanding conditions under the hood. Its precise fit guarantees easy installation and reliable performance, providing peace of mind for your vehicle's maintenance needs.
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