Product · United States

YF-S401 YF-S402 YF-S402B YF-S402C YF-S403 Water Flow Sensor G1/4 G3/8 G3/4 Hall Effect Liquid Flow Meter for Water Heater and Di

Lowest price: $9.64 · 1 store · price range $26.79 … $26.79 · 64% off the list price

Price history: 2 daily prices tracked since 2026-10-30; lowest $9.64, highest $9.64.

Price last confirmed by the store feed on 2026-10-30.

YF-S401 YF-S402 YF-S402B YF-S402C YF-S403 Water Flow Sensor G1/4 G3/8 G3/4 Hall Effect Liquid Flow Meter for Water Heater and Di

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Store 1 (US)$9.64In stockGo to store

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