4055728275 Genuine Medium Agitator for Simpson Top Load Washing Machines, Replacement Simpson Washer Agitator

Simpson part 4055728275 is a genuine medium agitator for Simpson top load washing machines. Simpson has used agitators of different heights and fittings across its ranges, and this one is described as the medium size. We don't hold a model list for it, so measure your old agitator and check the number on your washer's parts list, or send the model and serial number from the washer's rating label through the parts enquiry form.

Simpson washer not agitating properly?

The agitator is the centre post that twists back and forth to turn the clothes through the water. When the splines inside it wear, it can slip on the drive shaft, so the motor runs but the clothes barely move. Cracked vanes can snag and tear clothing, and a loose agitator may knock or wobble during the wash. If the machine fills and drains normally but washing comes out dirty and tangled, check whether the agitator turns firmly with the shaft before blaming the gearbox or motor.

Part details

• Genuine Simpson part 4055728275
• Medium agitator
• For Simpson top load washing machines
• Measure your old agitator to confirm the size

Changing the agitator

Unplug the washer and turn off the taps. Remove the agitator cap and any fabric softener cup, then undo the retaining bolt or nut and pull the old agitator straight up. It may be tight, so work it free gently. Clean the drive shaft, fit the new agitator so it seats fully on the splines, tighten the fixing and run a short cycle to check it turns smoothly.

Questions about this part

How do I know I need the medium agitator?

Compare the height of your old agitator and check your washer's parts list. Simpson has used more than one agitator size, so the model number is the best guide. Send it through the parts enquiry form and we'll confirm whether 4055728275 is correct.