Genuine Maytronics parts · 19 motor units

Dolphin pool cleaner motor units & impellers.

Every genuine Maytronics motor unit and impeller for a Dolphin robot. The motor unit is the sealed block inside the robot that holds the pump motor and the drive motor; the impeller is the fan on top of it that pulls water through the filter. Pick your model to see the units Maytronics confirms for it.

Impellers 2Drive wheel assemblies 1Motor units 16
Match it to your robot

Find the right motor unit for your Dolphin.

Motor units are the most model-specific part a Dolphin has: the drive type, the climbing ability, the LED and the filter indicator all live in it. Rule out the cheap causes first, then match the unit to the robot's exact model number.

Check the impeller firstA clogged impeller mimics a dead motor: the robot moves but does not pick up, or hums and stops. Unplug the power supply, open the impeller cover and clear the hair and debris. A broken impeller blade is a five-dollar fix.
Then the cable and power supplyA robot that will not start at all is more often a cable, swivel or power-supply fault than a motor. The troubleshooting guide for your model walks through the checks in order.
Match the exact model numberChoose your robot in the list above. Motor units with the same name (S1, S2, M-line) exist in climbing and floor-only versions, with and without LED; Maytronics' list for your model names the right one.

Impellers (2)

The impeller and its screw, the fan that pulls water through the filter. The first part to check when suction drops.

Drive wheel assemblies (1)

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

Motor units (16)

The sealed pump-and-drive motor units, by platform and cycle length. Sold on exchange where Maytronics marks the part EX.

By robot

Motor Units & Impellers by Dolphin model.

The robots we sell first, then every other model Maytronics lists motor units for. Each link opens that robot's own parts page at its motor units.

Quantum 3Cayman 2Escape 2Explorer E10 2Explorer E30 with Wi-Fi 2Explorer E50 2Nautilus CC 2Nautilus CC Pro 2Explorer E20 1Explorer E70 1Liberty 200 1Liberty 300 1Nautilus CC Plus with Wi-Fi 1Nautilus CC Supreme 1Nautilus Titan 1Premier 1Sigma 1Wave 60 1Wave 80 1Wave 90i 1
Every other model (44)
S200 4Active 20 3Advantage Ultra 3T35 3Active 10 2Active 15 2Active 2000 2Active 30 2Active 3000 2Active 40 2Active Solo 2Advantage 2Advantage PRO 2Echo 2Liberty 600 2Nautilus AG 2Premium 10 2Premium 20 2Premium 2000 2Premium 30 2Premium 3000 2Premium 40 2Proteus DX3 2Proteus DX4 2Proteus DX5i 2S100 2S2000 2S300 2S400 2S50 2T15 2T2000 2T25 2T3000 2T45 2Active 60 1Explorer E25 1Liberty 400 1M550 1M600 1Oasis Z5i 1Premium 60 1T55i 1T60 1

Refurbished and open-box editions use their base model's parts. Not listed? Find your model or send us the model number from the label under the handle.

Before you order

When to replace a Dolphin motor unit.

It hums but the pump does not turnWith the impeller clear and the robot on a known-good cable and power supply, a pump that hums without turning, or a drive that no longer moves the tracks, is the motor unit.
Water inside the motor unitA motor unit is sealed. Condensation or water visible inside the housing means the seal has gone and the unit should be replaced before it shorts.
The warranty comes firstMotor units are the most expensive part on this page. If the robot is inside its Maytronics warranty, a motor fault is a warranty claim; our specialists will tell you how to file it before you buy anything.

How to replace and care for Dolphin motor units

Questions

Dolphin motor units, answered.

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 first. If the pump hums without turning, the tracks no longer drive or there is water inside the sealed housing, the motor unit has failed. The troubleshooting guide for your model has the checks in order.

Is replacing a Dolphin motor unit worth it?

Often, yes: the motor unit is the heart of the robot and the rest of it (body, filter, tracks) has years left. Compare the unit's price against the robot's age and warranty, and talk to us before you decide; if the robot is under warranty the motor is covered.

What does EX mean on a Dolphin motor unit?

EX marks an exchange part: Maytronics expects the old motor unit back. The part page lists the price and the robots the unit fits; ask us about the exchange before ordering.

More Dolphin parts

Every other category.

FiltersFine and ultra-fine panels, baskets, cartridges and bags.60 parts ›Brushes & Climbing RingsActive brushes, PVC and combined brush sets, climbing rings.41 parts ›Tracks & WheelsTrack pairs, wheels, gears and guide wheels.12 parts ›Power Supplies & ChargersPower units, timer and Wi-Fi versions, cordless chargers.23 parts ›Cables & SwivelsSwivel cables by length, two- and three-wire cables, cords.18 parts ›Caddies & CoversThe Universal Caddy, caddy covers and every caddy part.17 parts ›Remote Controls & TimersBluetooth, manual-drive and Wave remotes, holders.6 parts ›Niya PartsFilters, batteries, chargers, tracks and lids for the Niya range.36 parts ›Other Parts & AccessoriesClickers, hooks, flaps, spring filters and the rest.9 parts ›
Pick your robot on the parts hub
Talk to a Dolphin specialist Live chat about the right motor unit, a part number or a fix. Real people, no bots. Start a chat Find an authorized dealer 1,200+ Dolphin service dealers across the US for repairs, parts and warranty work. Find a dealer Warranty and repairs What the Maytronics warranty covers, how to register and how a repair claim works. Warranty details