Active Brush Assembly Dynamic (9995541-ASSY)
Genuine Maytronics part · Brushes & Climbing Rings

Active Brush Assembly Dynamic

Part number 9995541-ASSY · UPC 3701314140020 · 1-year warranty

$104.58 on Amazon, list $179.77

Maytronics list price $130

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We do not stock this part in our own store yet, so the link goes to Amazon's current revision of this part, listed as “Dolphin Genuine Replacement Part — Complete Front Brush Kit — 9995541-R1”; check the revision and pack size before you order. It is also sold by Maytronics. As an Amazon Associate we earn from qualifying purchases.

  • Replacement Active Brush Assembly

Fits 6 robotsHow to replace itSpecs

Compatibility

Fits these Dolphin robots.

Confirmed by Maytronics' compatibility checker and each robot's spare-parts list.

Also listed by Maytronics for: Dolphin Maximus X70, Dolphin Zenit 20, Dolphin Active X4, Dolphin Comfort Active, Dolphin KAPTUR 400, PS50, Dolphin Dolphin 4, Dolphin SOPRA PE RFECT, Dolphin TopStar gold, Dolphin Evolution 50, F50, Dolphin Maxi Kart, Dolphin SF50, Dolphin DIVER PRO 400, Dolphin M400, Dolphin EX60, Dolphin DIVER PRO 500, Dolphin Blue Maxi 65, Dolphin Evolution 60, F60, Dolphin F60, PS60, SF60, Dolphin SF60, Dolphin Swell MX, Dolphin Wave 80, Dolphin C5 PRO, Dolphin Pro X1, Dolphin Maximus X90, Dolphin Active X5, Dolphin Deluxe Active, Dolphin KAPTUR 500, Dolphin Dolphin 5, Dolphin SOPRA PREMIUM, Dolphin TopStar platin, Dolphin X90, Dolphin Zenit 30, BIO SUCTION, Dolphin BIO SUCTION, Dolphin PoolBot PBIO.

Do it yourself

How to replace it at home.

Maytronics' own step-by-step answers and videos for this kind of part.

How to replace the climbing rings on my Dolphin brushes?Video
Nautilus CC Plus with Climbing Rings

Please follow the steps below for proper installation:

(The following steps are applicable for all models that have climbing rings)

  1. Wet the climbing rings in the pool or soak them in water for 10 minutes until they are fully soaked.

  2. Remove the robot from the pool, and turn the robot upside down.

  3. Make sure the power supply is unplugged from the outlet.

  4. Use a flathead screwdriver to release the brush from it on both sides.

  5. Remove the brush.

  6. Remove the climbing rings.

  7. Soak the new climbing rings in water so they are flexible. Take the new climbing rings and work them onto the brushes.

  8. Once the climbing rings are in place, slide the brush back into its sockets and push it into place.

Video references for assistance in how to remove and install the brushes (applicable for steps 2-5, and 8):

M Line (DX3/Sigma/Nautilus CC Plus/Nautilus CC Supreme/M400)

M600 (Active 60, Explorer E70)

If you are interested in purchasing replacement climbing rings, our replacement parts.

Open this answer on its own page →

How do I replace the brushes on my Dolphin robot?Video

Choose your brush and click your robot model to see the video and instructions.

FRONT BRUSH:

S50 (E10, E20/E25, Active 10, Cayman, Escape, Encore)

The front brush

  1. Unplug the power supply from the outlet.
  2. Turn the robot upside-down.
  3. Remove the tracks from the robot.
  4. Remove the wheel disk with the flathead of the screwdriver.
  5. Rotate the wheel until the screw holding the drive gear is visible through the wheel.
  6. Unscrew the screw holding the white drive gear and then release the screw and gear.
  7. Gently pull out the old brush.
  8. Slide the new brush back into place, then return the gear to its place. Screw the gear holding the brush into place back in.
  9. Reinstall the wheel cover and tracks.
  10. Rotate the brush to ensure everything is working smoothly.

S100 (Advantage, Proteus DX3, Saturn, Echo, Nautilus CC, Active 15, Cayman, Escape, Explorer E20)

The brush

  1. Unplug the power supply from the outlet.
  2. Turn the robot upside-down.
  3. Remove the tracks from the robot.
  4. Remove the wheel disk with the flathead of the screwdriver.
  5. Rotate the wheel until the screw holding the drive gear is visible through the wheel.
  6. Unscrew the screw holding the white drive gear and then release the screw and gear.
  7. Gently pull out the old brush.
  8. Slide the new brush back into place, then return the gear to its place. Screw the gear holding the brush into place back in.
  9. Reinstall the wheel cover and tracks.
  10. Rotate the brush to ensure everything is working smoothly.

S200 (E30, Advantage Ultra, Active 20, Quantum, T35, Triton PS)

The brush

  1. Unplug the power supply from the outlet.
  2. Remove the tracks from the robot.
  3. Using a Phillips screwdriver, unscrew the four screws holding the brush into place.
  4. Remove the old brush.
  5. Reinstall the new brush and insert the four screws.
  6. Rotate the brush to ensure that everything is working smoothly.

S300 & S400 (click for models)

S300 (E35/E35i, Proteus DX5i, Active 30, T35/T45, Premium 40, Explorer E30, E40i, Active 30i, T55i)

S400 (E50i, Active 50, Explorer E50)

The brush

  1. Unplug the power supply from the outlet.
  2. Remove the tracks from the robot.
  3. Using a Phillips screwdriver, unscrew the four screws holding the brush into place.
  4. Remove the old brush.
  5. Reinstall the new brush and insert the four screws.
  6. Rotate the brush to ensure that everything is working smoothly.

M400/M500 (Sigma, Oasis, Nautilus CC Supreme, Aquarius XL, C4)

The brush

  1. Use a flathead screwdriver to gently push out the brush until it pops out.
  2. Place the new brush in the same position.
  3. Press it inside to make sure it's in place.
  4. Rotate the wheels to make sure it's working.

M250 (Nautilus CC Plus, Dx3, Zenit 20)

The brushes

Premier

MIDDLE BRUSH:

M400/M500

The brush

  1. Unplug the power supply from the outlet.
  2. Flip the robot upside-down.
  3. Release all four screws from each corner that are holding the brush.
  4. Remove the brush from the robot.
  5. Place them in the same position as the new brush.
  6. Insert and tighten the four screws.

Sigma

The brush

  1. Unplug the power supply from the outlet.
  2. Flip the robot upside-down.
  3. Release all four screws from each corner that are holding the brush.
  4. Remove the brush from the robot.
  5. Place them in the same position as the new brush.
  6. Insert and tighten the four screws.

This repair is relevant for Sigma produced in 2026 and onwards

REAR BRUSH:

S200 (E30, Advantage Ultra, Active 20, Quantum, T35, Triton PS)

The rear brush

  1. Unplug the power supply from the outlet.
  2. Flip the robot upside-down.
  3. Remove the tracks from the robot.
  4. Gently release the brush from the notches on the sides and remove the brush.
  5. Place the new brush in the same position as the previous brush.
  6. Reinstall the tracks on each side.
  7. Rotate the brush to ensure that everything is working smoothly.

S300 & S400 (click for models)

S300 (E35/E35i, Proteus DX5i, Active 30, T35/T45, Premium 40, Explorer E30, E40i, Active 30i, T55i)

S400 (E50i, Active 50, Explorer E50)

The rear brush

  1. Unplug the power supply from the outlet.
  2. Flip the robot upside-down.
  3. Remove the tracks from the robot.
  4. Gently release the brush from the notches on the sides and remove the brush.
  5. Place the new brush in the same position as the previous brush.
  6. Reinstall the tracks on each side.
  7. Rotate the brush to ensure that everything is working smoothly.

M400/M500 (Sigma, Oasis, Nautilus CC Supreme, Aquarius XL, C4)

The brush assembly

  1. Use a flathead screwdriver to gently push out the brush until it pops out.
  2. Place the new brush in the same position.
  3. Press it inside to make sure it's in place.
  4. Rotate the wheels to make sure it's working.

M600/M700 (Active 60, E60i, Explorer E70)

The rear brush

  1. Unplug the power supply from the outlet.
  2. Flip the robot upside-down.
  3. Remove the tracks from the robot.
  4. Gently release the brush from the notches on the sides and remove the brush.
  5. Place the new brush in the same position as the previous brush.
  6. Reinstall the tracks on each side.
  7. Rotate the brush to ensure that everything is working smoothly.

M250 (Nautilus CC Plus, Dx3)

M550

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Specifications

Product Info

Active Brush
Yes
Brush Type
Standard Brush

Size & Dimension

Package Dimensions
3.6x3.4x13.8 inch

General Info

Warranty (years)
1
UPC
3701314140020
Brushes & Climbing Rings

Related parts.

All brushes & climbing ringsAll parts for the Refurbished Nautilus CC Supreme
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