Has been tested and holds water The 1996-2002 4Runner Coolant Reservoir Overflow Bottle Expansion Tank OEM is a genuine Toyota/Denso product made of durable plastic in Japan. Designed specifically for the 4Runner model, this tank ensures proper coolant overflow and expansion functionality. It is essential for maintaining the engine's cooling system and preventing overheating. With a focus on quality and compatibility, this OEM tank is a reliable choice for those looking to replace or upgrade their vehicle's coolant reservoir overflow bottle.
