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Keep your Toyota's cooling system working right with this genuine OEM part.

It's the coolant bypass valve assembly, part number 16671-37010.

It's designed to fit specific Toyota models like the Prius, Prius PHV, and C-HR with the 1.8L engine.

It's a bolt-on replacement made of durable plastic.
The O-ring is included, so you have everything you need for the job.

This isn't a universal or performance part—it's the real deal, made in Japan by Toyota.



5 out of 5