Yashio Factory Super Water Pump Pulley

Silvia (for S13 / S14 / S15 / 180SX)
This is a necessary item to decrease the rise in water temperature for the SR20DET.
The reasoning for making the pulley larger is to reduce the number of revolutions of the pump, in order to reduce bubbles. Bubbles are actually an enemy, as they raise the water temperature. If you suppress the rise in water temperature to 6000 rpm at 7000 rpm, the temperature will not rise any higher. This is a trick to use when racing.

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