Whirlpool Washer Water inlet valve and thermistor assembly WP3979346, Replaces 3979346, 8578342, 3979347

Is This the Right Part?

✅ Cross Reference Information

Common Symptoms

• No hot or cold water entering the washer
• Water filling problems during wash or rinse
• Water leaking from the inlet-valve area
• Washer continues filling because an inlet valve does not close properly
• Incorrect or unstable water-temperature behavior related to the integrated thermistor

Check Before Replacing

• Confirm both household water faucets are fully open and that the supply hoses are not kinked.
• With power disconnected and water supply turned off, inspect the inlet screens and hose connections for blockage, corrosion, or damage.
• Check whether water enters the tub while the washer is turned off and unplugged; continued filling can indicate a valve that is not closing.
• If using an electrical meter, test the valve solenoids only with the washer unplugged and follow the appliance model’s technical sheet for the correct resistance specification.
• If temperature behavior is abnormal, verify that the hot and cold hoses are connected to the correct washer inlets before condemning the valve or thermistor.

Pro Tip

Part Details

Installation Notes

• Unplug the washer and shut off both water-supply faucets before servicing.
• Disconnect the supply hoses and electrical connectors carefully, noting their original locations before removal.
• Inspect hose seals and connections during reassembly, then turn the water supply back on slowly and check for leaks.
• Confirm the replacement assembly’s connector layout and physical configuration match the removed part before final installation.
• Run an appropriate fill or diagnostic check after installation, and stop immediately if leakage or abnormal operation occurs.

Verified Compatible Models

1CWTW5200VQ0, 1CWTW5300VW0, 1CWTW5505SQ0, 1CWTW5505VQ0, 1CWTW5590VQ0, 1CWTW5700SW0, 1CWTW5800SG0, ATW4300TQ0, CAM2742TQ0, CAW2752RQ0, ETW4300TQ0, GSQ9631LG0, GSQ9631LL0, GSQ9631LW0, GST9630PG0

Fitment reminder: Match the complete appliance model number, including suffix or revision where applicable, before ordering.