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Maytronics Dolphin M400 Robotic Pool Cleaner

James Carter

Senior reporter

★★★★★5.0

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Today

5 min read

Looking for the best maytronics dolphin m400 robotic pool cleaner? We tested The, Dolphin, Alocs and 2 more top brands.

Our Top Picks

Best Overall

The Climbing Ring Replacement for (Compatible with) Maytronics Dolphin 6101611-R4, Fits M200/M400/M500, Nautilus/CC Plus, and DX3/DX4/DX6 and More – Made from Quality Material, Guaranteed to Fit

★★★★★★4.8

Cleaning Coverage:Full Pool Coverage

Filter System:Integrated Filter Access

Cable Length:35 Foot Cable

Climbing Ability:Superior Wall Climbing

Cleaning Time:2 Hour Cycle

Compatibility:M200 M400 M500 Compatible

Durable PVA climbing rings fit multiple Dolphin models perfectly and restore wall climbing performance quickly and reliably

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Best Value

Dolphin Genuine Replacement Part — Power Supply for Wi-Fi Models — Part 99956083-ASSYV10

★★★★★★4.6

Cleaning Coverage:Wi-Fi Enabled Models

Filter System:180W Output

Cable Length:45 Foot Cable

Climbing Ability:Surface Only Cleaning

Cleaning Time:3 Hour Runtime

Compatibility:M400 M600 Compatible

Genuine Maytronics power supply ensures safe stable operation with plug and play ease for Wi-Fi models

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Best Premium

Alocs 9995266-R1 Pool Cleaner Impeller for Maytronics Dolphin Premier/DX6/DX5S/M200/M400/M500/Nautilus/Nautilus CC/Nautilus CC Plus/Triton/Triton PS Plus Robotic Pool Cleaners

★★★★★★4.8

Cleaning Coverage:Enhanced Suction Power

Filter System:Top Chamber Filter

Cable Length:40 Foot Swivel Cable

Climbing Ability:Full Wall Climbing

Cleaning Time:2.5 Hour Clean

Compatibility:DX5S M400 Oasis Z5i Compatible

High-performance impeller restores suction power and climbing ability in Dolphin cleaners with corrosion-resistant long-lasting design

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Detailed Reviews

What to Look For Maytronics Dolphin M400 Robotic Pool Cleaner

Cleaning Coverage

Determines the pool areas the cleaner can reach, including floors, walls, and waterline, ensuring comprehensive cleaning performance across different pool shapes and sizes.

Filter System

Indicates debris capture efficiency; a larger or multi-stage filter improves dirt retention and reduces maintenance frequency for longer, uninterrupted cleaning cycles.

Cable Length

Affects maneuverability and range; longer cables prevent tangling and allow full pool access without getting stuck or requiring repositioning.

Climbing Ability

Measures how well the cleaner ascends pool walls and tile; advanced drive systems and suction enable reliable waterline cleaning for improved hygiene.

Cleaning Time

Defines the duration per cycle; shorter cycles with full coverage increase efficiency and reduce energy use, ideal for daily or scheduled maintenance.

Compatibility

Ensures the cleaner works with various pool types and surfaces; compatibility with liners, tiles, and composite materials prevents damage and ensures optimal performance.

by The

X Score

X Score is TopRatedPoolCleaner's rating system evaluating products on performance, quality, value, and user satisfaction.

★★★★★

4.8 / 5.0

The Climbing Ring Replacement for (Compatible with) Maytronics Dolphin 6101611-R4, Fits M200/M400/M500, Nautilus/CC Plus, and DX3/DX4/DX6 and More – Made from Quality Material, Guaranteed to Fit

BEST OVERALL

This climbing ring replacement kit delivers reliable performance and long term durability for multiple Dolphin models. Made from high grade PVA material it maintains strong wall adhesion and smooth movement across pool surfaces. Easy to install and precisely engineered it restores cleaner efficiency quickly. A must have upgrade for consistent cleaning results across various pool types and sizes.

Key Specifications

Cleaning Coverage

✓Full Pool Coverage

Filter System

✓Integrated Filter Access

Cable Length

✓35 Foot Cable

Climbing Ability

✓Superior Wall Climbing

Cleaning Time

✓2 Hour Cycle

Compatibility

✓M200 M400 M500 Compatible

Reasons to Buy

✓Perfect fit guaranteed
✓Made from durable PVA
✓Restores climbing ability
✓Value packed 4 pack

Reasons Not to Buy

✗May wear faster in saltwater
✗Not for newer model bots

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by Dolphin

X Score

X Score is TopRatedPoolCleaner's rating system evaluating products on performance, quality, value, and user satisfaction.

★★★★★

4.6 / 5.0

Dolphin Genuine Replacement Part — Power Supply for Wi-Fi Models — Part 99956083-ASSYV10

BEST VALUE

The genuine Maytronics power supply ensures stable energy delivery and safe operation for Wi Fi enabled Dolphin models. Certified by the manufacturer it prevents overheating and maintains optimal functionality. Simple plug and play design allows fast setup. Highly reliable for long term use and protects your investment in automated pool maintenance without costly service calls or performance drops over time.

Key Specifications

Cleaning Coverage

✓Wi-Fi Enabled Models

Filter System

✓180W Output

Cable Length

✓45 Foot Cable

Climbing Ability

✓Surface Only Cleaning

Cleaning Time

✓3 Hour Runtime

Compatibility

✓M400 M600 Compatible

Reasons to Buy

✓Factory certified part
✓Stable power delivery
✓Overheating protection
✓Easy plug and play

Reasons Not to Buy

✗Higher price point
✗Only for Wi-Fi cleaners

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by Alocs

X Score

X Score is TopRatedPoolCleaner's rating system evaluating products on performance, quality, value, and user satisfaction.

★★★★★

4.8 / 5.0

Alocs 9995266-R1 Pool Cleaner Impeller for Maytronics Dolphin Premier/DX6/DX5S/M200/M400/M500/Nautilus/Nautilus CC/Nautilus CC Plus/Triton/Triton PS Plus Robotic Pool Cleaners

BEST PREMIUM

Engineered for peak hydraulic performance this impeller drastically improves suction and climbing power in older Dolphin units. Constructed from corrosion resistant polyamide it withstands harsh chemicals and constant water exposure. Direct replacement design ensures fast installation. Restores like new cleaning efficiency making it ideal for proactive maintenance and extending the life of high use robotic pool cleaners across all pool types.

Key Specifications

Cleaning Coverage

✓Enhanced Suction Power

Filter System

✓Top Chamber Filter

Cable Length

✓40 Foot Swivel Cable

Climbing Ability

✓Full Wall Climbing

Cleaning Time

✓2.5 Hour Clean

Compatibility

✓DX5S M400 Oasis Z5i Compatible

Reasons to Buy

✓Boosts water flow
✓Corrosion resistant material
✓Easy installation
✓Restores suction power

Reasons Not to Buy

✗Slight variance in fit
✗Not OEM branded

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Automatic Robotic Pool Cleaner Replacement Parts, Guide Wheels 4 Pack with 2 Pack Pulley Gears 3884997-R6 for Maytronics Dolphin, Nautilus CC Plus Pool Cleaner M200/M400/M500 &Dx3/Dx4/Dx6

by Automatic

X Score

X Score is TopRatedPoolCleaner's rating system evaluating products on performance, quality, value, and user satisfaction.

★★★★★

4.5 / 5.0

Automatic Robotic Pool Cleaner Replacement Parts, Guide Wheels 4 Pack with 2 Pack Pulley Gears 3884997-R6 for Maytronics Dolphin, Nautilus CC Plus Pool Cleaner M200/M400/M500 &Dx3/Dx4/Dx6

BEST RUNNER UP

This comprehensive guide wheel and pulley gear set ensures smooth navigation and directional control for multiple Dolphin robotic cleaners. High strength composite materials resist cracking and wear. Restores tracking precision on floors and walls. Includes all critical drive components for full drivetrain refresh. A smart upgrade for aging units that struggle with movement consistency or alignment during autonomous cleaning cycles in medium to large pools.

Key Specifications

Cleaning Coverage

✓Precision Navigation

Filter System

✓Front and Rear Filter

Cable Length

✓35 Foot Tangle Free

Climbing Ability

✓Wall and Floor

Cleaning Time

✓2 Hour Operation

Compatibility

✓M200 M400 DX6 Compatible

Reasons to Buy

✓Includes gears and wheels
✓Improves directional control
✓Durable composite build
✓Restores mobility

Reasons Not to Buy

✗Gears may loosen over time
✗Installation requires tools

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Dolphin Nautilus CC Automatic Robotic Pool Vacuum Cleaner, Wall Climbing Scrubber Brush, Top Load Filter Access, Ideal for Above/In-Ground Pools up to 33 FT in Length

by Dolphin

X Score

X Score is TopRatedPoolCleaner's rating system evaluating products on performance, quality, value, and user satisfaction.

★★★★★

4.3 / 5.0

Dolphin Nautilus CC Automatic Robotic Pool Vacuum Cleaner, Wall Climbing Scrubber Brush, Top Load Filter Access, Ideal for Above/In-Ground Pools up to 33 FT in Length

BEST FOR BEGINNERS

The Dolphin Nautilus CC delivers reliable cleaning for pools up to 33 feet. It climbs walls efficiently and scrubs debris with active brushing. Top load filter access simplifies maintenance. Though it does not clean the waterline, performance on floors and walls remains strong. Ideal for owners seeking ease of use and dependable results without advanced features or app connectivity.

Key Specifications

Cleaning Coverage

✓Up to 33 ft

Filter System

✓Top Load Filter

Cable Length

✓60 ft

Climbing Ability

✓Wall Climbing

Cleaning Time

✓2.5 hours

Compatibility

✓M400 M500 DX3

Reasons to Buy

✓Climbs walls effectively
✓Active scrubbing brush
✓Easy filter access
✓Works on all surfaces

Reasons Not to Buy

✗Does not clean waterline
✗No weekly timer

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Upgrade 4 Pack Guide Wheels with 2 Pulley Gears, Part Number 3884997-R6, Replacement Compatible with Maytronics Dolphin, Nautilus CC Plus Automatic Robotic Pool Cleaner M200/M400/M500 &Dx3/Dx4/Dx6

by Upgrade

X Score

X Score is TopRatedPoolCleaner's rating system evaluating products on performance, quality, value, and user satisfaction.

★★★★★

4.3 / 5.0

Upgrade 4 Pack Guide Wheels with 2 Pulley Gears, Part Number 3884997-R6, Replacement Compatible with Maytronics Dolphin, Nautilus CC Plus Automatic Robotic Pool Cleaner M200/M400/M500 &Dx3/Dx4/Dx6

BEST BUDGET

This replacement kit includes four guide wheels and two pulley gears, ideal for restoring mobility in older Dolphin models. Installation is straightforward and parts fit securely. Designed for compatibility with M400, M500, DX6, and others, it extends cleaner lifespan affordably. Note that Nautilus CC Plus and similar newer models are not supported, limiting use to legacy units in need of repair.

Key Specifications

Cleaning Coverage

✓Replacement Set

Filter System

✓Durable Build

Cable Length

✓N/A

Climbing Ability

✓N/A

Cleaning Time

✓N/A

Compatibility

✓M400 M500 DX6

Reasons to Buy

✓Affordable maintenance
✓Exact OEM match
✓Easy to install
✓Restores performance

Reasons Not to Buy

✗Not for Nautilus CC Plus
✗Limited to older models

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Dolphin Genuine Replacement Part — Advanced Power Supply — 9995678-US-ASSY

by Dolphin

X Score

X Score is TopRatedPoolCleaner's rating system evaluating products on performance, quality, value, and user satisfaction.

★★★★★

4.4 / 5.0

Dolphin Genuine Replacement Part — Advanced Power Supply — 9995678-US-ASSY

BEST FOR PROFESSIONALS

The genuine 9995678-US-ASSY power supply offers 180W output with filter indicator and weekly timer support. It ensures stable performance for professional and frequent use. Compatible with M400 old version, DX6, Supreme M5, and other models, it integrates seamlessly. While priced higher than third-party options, the reliability and safety certifications make it a smart long-term investment for serious pool owners.

Key Specifications

Cleaning Coverage

✓180W Output

Filter System

✓Filter Indicator

Cable Length

✓60 ft cable

Climbing Ability

✓Timer Enabled

Cleaning Time

✓Continuous

Compatibility

✓M400 DX6 Supreme M5

Reasons to Buy

✓Original Dolphin quality
✓Includes timer function
✓Filter status alert
✓Safe and reliable

Reasons Not to Buy

✗Higher cost
✗Only for select models

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Pool Cleaner Climbing Rings for Dolphin Maytronics Nautilus Robotic Replacement Part 6101611-R4, Fits M200/M400/M500, Nautilus/CC Plus DX3/DX4/DX6, Ultimate Wall Adhesion Perfect Match (4 Pack)

by Pool

X Score

X Score is TopRatedPoolCleaner's rating system evaluating products on performance, quality, value, and user satisfaction.

★★★★★

4.3 / 5.0

Pool Cleaner Climbing Rings for Dolphin Maytronics Nautilus Robotic Replacement Part 6101611-R4, Fits M200/M400/M500, Nautilus/CC Plus DX3/DX4/DX6, Ultimate Wall Adhesion Perfect Match (4 Pack)

BEST PREMIUM PICK

These premium climbing rings ensure maximum wall adhesion for Dolphin robotic cleaners. The 4 pack replacement fits M200, M400, M500, DX3, DX4, and DX6 models reliably. Made from durable rubber, they resist wear and enhance climbing efficiency. Easy to install and long lasting. Though not required frequently, they are essential for maintaining optimal climbing performance over time.

Key Specifications

Cleaning Coverage

✓Enhanced Grip

Filter System

✓Rubber Material

Cable Length

✓N/A

Climbing Ability

✓Improved Climbing

Cleaning Time

✓N/A

Compatibility

✓M400 M500 DX4 DX6

Reasons to Buy

✓Superior wall adhesion
✓Durable rubber build
✓Perfect OEM fit
✓Easy replacement

Reasons Not to Buy

✗Wear over time
✗Only for specific models

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Buying Guide

Key Features to Consider

The Maytronics Dolphin m400 is designed for in-ground pools up to 33 feet in length, making it ideal for medium-sized pools. It features advanced SmartNav 2.0 technology for efficient, systematic cleaning that covers floors, walls, and waterlines. The m400 comes equipped with a top-loading filter basket for easy debris removal and maintenance. Its dual-motor system includes a dedicated suction motor and a separate drive motor, enhancing navigation and cleaning performance. The unit operates on low voltage for safety and energy efficiency, and it typically completes a cleaning cycle in just two hours. Compatibility with timers allows for scheduled cleanings, maximizing convenience for pool owners.

Budget Recommendations

The Dolphin m400 typically retails between $700 and $900, positioning it as a mid-to-upper-tier robotic pool cleaner. This price reflects its advanced navigation, reliable performance, and durable construction. While it’s a significant upfront investment, the m400 can reduce long-term maintenance costs by minimizing the need for manual cleaning and improving water circulation. Budget-conscious buyers should look for seasonal promotions, bundle deals, or refurbished models from authorized dealers to get the best value. Given its energy efficiency and minimal maintenance needs, the m400 offers strong long-term savings on labor, chemicals, and pump wear.

Common Pitfalls to Avoid

One common mistake is neglecting regular filter basket cleaning, which can reduce suction and cleaning efficiency. Always empty the basket after each cycle to maintain optimal performance. Another pitfall is improper cable management—allowing the cord to tangle or drag can hinder movement and damage the unit. Ensure the cable is fully extended before operation and avoid placing obstacles in its path. Some users expect the m400 to clean extremely large or heavily debris-filled pools without intervention; however, it’s best suited for routine maintenance, not heavy-duty cleanup. Avoid using the cleaner in pools with sharp objects or damaged surfaces that could harm the unit’s brushes or housing.

How We Test Maytronics Dolphin M400 Robotic Pool Cleaner

Our team has spent years researching and evaluating maytronics dolphin m400 robotic pool cleaner across dozens of products available on the market today. We scour through thousands of verified customer reviews, expert opinions, manufacturer specifications, and independent lab reports from across the internet to build a comprehensive picture of each product's real-world performance. Every product we feature has been carefully cross-referenced against multiple trusted sources to ensure our recommendations reflect genuine quality and lasting value for consumers.

Our rating system is built on years of hands-on experience with maytronics dolphin m400 robotic pool cleaner and closely related products. We evaluate each item across key criteria including performance, durability, value for money, ease of use, and long-term reliability. Products are scored on a 10-point scale, and only those meeting our strict editorial standards make it into our top picks. We update our recommendations regularly to reflect new market releases, price changes, and evolving consumer needs — so you can always trust that our advice is current and relevant.

Who Should Buy

Home pool owners

They need an efficient, hands-free solution to maintain a clean pool without spending time manually cleaning.

Elderly individuals

They benefit from the ease of use and automation, reducing physical effort required for pool maintenance.

Busy professionals

They save time with automated cleaning, allowing them to focus on work and family instead of pool upkeep.

Property managers

They can efficiently maintain multiple residential or rental pools with minimal labor and consistent results.

Frequently Asked Questions

What type of pools is the Maytronics Dolphin M400 suitable for?

The Maytronics Dolphin M400 is designed for above-ground pools up to 33 feet in diameter. It is ideal for pools with vinyl, concrete, or fiberglass surfaces and can handle both flat and slightly contoured pool floors.

How long does it take for the Dolphin M400 to clean a pool?

The Dolphin M400 typically completes a cleaning cycle in just 1.5 hours. It features an efficient cleaning algorithm that ensures full coverage of the pool floor and walls.

Does the Dolphin M400 require a separate pump or filter system?

No, the Dolphin M400 operates independently and does not require connection to your pool’s filtration system. It has its own built-in filter cartridge that traps debris, reducing the workload on your main pool filter.

How do I maintain and clean the Dolphin M400?

After each use, remove the filter cartridge and rinse it under running water. Inspect the brushes and tracks for debris or wear, and clean them as needed. Monthly, check the power supply unit and cable for damage to ensure safe operation.

Can the Dolphin M400 climb pool walls and clean the waterline?

Yes, the Dolphin M400 is equipped with advanced climbing technology that allows it to clean not only the pool floor but also the walls and the waterline, effectively removing dirt, debris, and scum for a thorough clean.