When Should I Replace My Engine Coolant Reservoir Cap? - The reservoir cap is a sealing cap installed on the expansion tank filler port. It is not merely a simple cap but a crucial component of the cooling system. If your car is experiencing problems such as coolant leaks, engine overheating, and a deteriorated or damaged radiator cap, you may need to replace your coolant cap.
Replacement Part Numbers - 21712-ZN50A, 21712ZN50A. Please check the detailed description or enter Year/Make/Model to check your compatibility before purchasing this expansion tank cover.
Direct Replacement - Perfect match, direct replacement. This coolant overflow tank cap is made from premium materials to ensure superior quality and long-lasting performance. This is not a genuine part, but an aftermarket replacement. We have strict quality control standards to ensure high performance. If you have any questions or concerns, please feel free to contact us.
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