Whirlpool Dryer Idler Pulley Assembly 8547174V, Replaces 8547174, 8547174VP

Genuine Whirlpool idler pulley assembly for a dryer drum drive belt. The pulley maintains tension on the drive belt so the drum can rotate.

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✅ Cross Reference Information

Common Symptoms

• Squeaking or squealing during drum rotation
• Noisy dryer operation
• Drum does not tumble or rotate
• Drive belt slips or loses tension
• Dryer may fail to start if pulley drag prevents proper belt movement

Check Before Replacing

• Disconnect electrical power before inspection or service.
• With the dryer off and access provided by the model-specific service procedure, inspect the idler pulley wheel for visible cracking, heavy wear, or damage.
• Check that the pulley wheel rotates freely by hand without grinding, binding, or excessive wobble.
• Inspect the drive belt routing around the idler pulley and motor pulley; confirm the belt is seated and remains tensioned.
• If the dryer is noisy, compare the sound location with other rotating components such as drum rollers and the motor; noise alone does not prove the idler pulley is defective.

Pro Tip

Part Details

Key Features

• Genuine Whirlpool OEM idler pulley assembly
• Designed for the dryer drum drive-belt tensioning system
• Assembly-style replacement rather than only a pulley wheel
• Manufacturer part number 8547174V
• Replaces Whirlpool part number 8547174

Installation Notes

• Disconnect power before beginning service; for gas dryers, follow the model-specific instructions for safely shutting off the gas supply if required.
• Use the dryer’s model-specific service procedure to access the belt and idler-pulley area.
• Relieve drive-belt tension before removing the old assembly, then route the belt correctly around the replacement pulley and motor pulley.
• After reassembly, manually check that the drum and belt move normally before restoring power and testing the dryer.
• Do not lubricate or modify the assembly unless the applicable Whirlpool service documentation specifically instructs it.

Verified Compatible Models

MED6300TQ0, MED6400TB0, MED6400TQ0, MED6600TQ0, MGD6300TQ0, MGD6300TQ1, MGD6400TB0, MGD6400TQ0, MGD6600TQ0, MGD6600TQ1, WED6200SW0, WED6200SW1, WED6400SB0, WED6400SB1

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