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Black Impeller & Screw

Genuine Maytronics parts · Dolphin

Dolphin pool cleaner motor units and impellers

The motor unit is the sealed block inside the robot that holds the pump motor and the drive motor; the impeller is the fan that pulls water through the filter. A clogged impeller mimics a dead motor and costs nothing to fix, so start there. When the motor really has failed, this page lists the exact unit for each platform.

  • 19 motor units
  • 64 models
  • 9 sold on Amazon
Find yours by model

Find the right motor unit for your Dolphin

Motor units are the most model-specific part a Dolphin has: drive type, climbing ability and the filter indicator all live inside.

Check the impeller first

Unplug the power supply, open the impeller cover and clear the hair and leaves. A robot that moves but does not pick up, or hums and stops, is usually this.

Then the cable and power supply

A robot that will not start at all is more often a cable, swivel or power-supply fault than a motor.

Match the exact model

Units with the same name exist in floor-only and climbing versions, with and without the LED. Pick your model and use only a unit on its list.

Impellers 1

Narrow to your model

The impeller and its screw: the first part to check when suction drops.

Drive wheel assemblies 1

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The drive wheel assemblies that carry the robot on its tracks.

Motor units 17

Narrow to your model

Sealed pump-and-drive motor units by platform and cycle length. EX marks an exchange part: Maytronics expects the old unit back.

When to replace a Dolphin motor unit

It hums but the pump does not turn

With the impeller clear and a known-good cable and supply, a pump that hums without turning, or tracks that no longer drive, points to the motor unit.

Water inside the housing

The unit is sealed. Condensation or water visible inside means the seal has gone; replace it before it shorts.

Check the warranty first

Motor units are the most expensive part on the robot. Inside the Maytronics warranty a motor fault is a claim, not a purchase.

Other Dolphin parts

FiltersFine and ultra-fine panels, baskets, cartridges, bags.60 partsClimbing RingsThe foam rings that let the brushes grip the wall.5 partsBrushesActive brush assemblies, front and rear brushes, PVC and combined packs.36 partsTracksTrack pairs by platform, drive wheels, gears, guide wheels.12 partsPower Supplies120W and 180W units, timer and Wi-Fi versions, cordless chargers.22 partsCablesSwivel cables by length, two- and three-wire cables, power cords.18 partsCaddies and CoversThe Universal Caddy, covers and every caddy part.17 partsRemote ControlsBluetooth, manual-drive and Wave remotes, holders.6 partsOther PartsClicker, ClearPod, hooks, flaps, spring filters and the rest.10 parts

All Dolphin parts · Parts by model · All brands

Dolphin pool cleaner motor units: your questions

How do I know if my Dolphin motor unit is bad?

Clear the impeller and test the robot on a known-good power supply and cable. If the pump hums without turning, the tracks no longer drive, or there is water inside the sealed housing, the motor unit has failed.

Is replacing a Dolphin motor unit worth it?

Often, yes: the body, filters and tracks have years left. Compare the unit's price with a current robot, and ask a Pool Pro before buying an exchange unit.

What does EX mean on a Dolphin motor unit?

An exchange part. Maytronics supplies the unit on the understanding that the old one is returned, which is why these are quoted through a dealer rather than sold off the shelf.

Still not sure? Ask a Pool Pro.

Not sure this is the right part?

Send a Pool Pro your robot's model number (on the label under the handle) and a photo of the old part. We will confirm the Maytronics part number and where to get it.

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