Your Dolphin M400 has started slipping on the pool walls, leaving streaks of algae behind. The brushes are worn smooth after months of faithful service. Replacing them is the fastest way to restore that spotless clean, but choosing the right set from the sea of options can feel overwhelming. This guide cuts through the noise to help you find the best Dolphin M400 replacement brushes for your specific needs.
Comparing the Top Dolphin M400 Replacement Brushes
We’ve evaluated the most popular brush sets compatible with the Dolphin M400, focusing on build quality, fit, and cleaning performance. Below is a side-by-side comparison of the top contenders for 2026.
Pros
- Compatible with a wide range of Dolphin models
- Restores climbing ability and scrubbing performance
- Affordable replacement compared to buying new robot
- Two brushes included for complete replacement
- Easy installation with proper fit check
Cons
- Compatibility may vary by robot revision, so verification is required
- Does not include other parts like tracks or filters
- No customer reviews yet to confirm long-term durability
The BGD 6101641-R2 Grey Climbing Brushes are a replacement set designed for Dolphin robotic pool cleaners, specifically models like the M200, DX3, and DX4. They come as a two-pack to replace both front and rear brushes, restoring the robot's ability to scrub pool floors and climb walls effectively.
These brushes are engineered to rotate with the robot's movement, dislodging dirt and debris while maintaining traction on vertical surfaces. Users can expect a noticeable improvement in cleaning performance once worn brushes are replaced, making this a cost-effective maintenance solution.
Build quality appears solid with grey composite bristles that resist wear and water damage. The set includes two identical brushes, but buyers must verify the shape, length, and mounting configuration of their existing brushes to ensure compatibility, as similar-looking robots may use different assemblies.
One potential drawback is the lack of customer reviews, so real-world longevity is unconfirmed. Additionally, compatibility varies by robot revision, so double-checking your model number is essential before purchase.
Overall, the BGD 6101641-R2 brush set offers a reliable and affordable way to keep your Dolphin pool cleaner performing at its best. If you need to restore scrubbing and climbing function, this two-pack is a smart choice.
Pros
- Wide compatibility with many Dolphin models
- Made from durable, expandable PVA material
- Easy to install with just water soaking
- Complete 4-pack for full replacement
- Affordable price point for routine maintenance
Cons
- May not fit newer Dolphin models not listed in compatibility
- Requires soaking before installation (takes a few minutes)
- Some users may prefer OEM parts for exact fit
The Calvana climbing ring replacement set is designed for owners of Maytronics Dolphin robotic pool cleaners who need to restore their unit's wall-climbing performance. It is compatible with popular models like the M200, M400, M500, Nautilus, Nautilus CC Plus, DX3, DX4, DX6, and many others. If your cleaner is slipping or failing to climb walls, these rings are a cost-effective fix.
The standout feature is the premium PVA material, which expands when soaked in water. This ensures a tight, secure fit on the rollers and provides excellent grip on pool walls. Real-world use shows that these rings restore the climbing action effectively, allowing the cleaner to scrub waterlines and corners as intended. The installation process is straightforward: just soak the rings for a few minutes until soft, then slide them onto the rollers.
Build quality is solid for an aftermarket part. The PVA is flexible yet durable, and the rings hold their shape after multiple uses. The set includes all four rings needed for a complete replacement, which is convenient. The white color blends in with most cleaners and won't affect aesthetics.
One potential drawback is that compatibility is limited to the models listed, so owners of newer or less common Dolphin models should verify fit before purchasing. Additionally, the rings require a brief soaking before installation, which adds a small step compared to some other replacement parts. However, this is a minor inconvenience given the cost savings over OEM parts.
Overall, the Calvana climbing ring replacement offers excellent value for Dolphin pool cleaner owners. It is easy to install, restores climbing performance effectively, and comes with a 60-day satisfaction guarantee. For routine maintenance, this is a smart buy that can extend the life of your cleaner without breaking the bank.
Pros
- Durable PVA material resists wear and maintains shape.
- Wide compatibility covers many popular Dolphin robot models.
- Cost-effective replacement versus buying a new cleaner.
- Simple to install with no modifications needed.
- Rings dry and shrink for storage, then rehydrate to soft state.
Cons
- Rings arrive dry and hard; must soak before use (this is normal).
- No included instructions for installation (though straightforward).
- May not fit all Dolphin models not listed; check measurements.
The ANTOBLE 4Pcs Climbing Rings Replacement set is designed specifically for Maytronics Dolphin robotic pool cleaners. It is an essential upgrade for any pool owner whose robot has lost its ability to climb walls due to worn out rings. This kit includes four rings, enough for a typical cleaner, and is compatible with a long list of models including the popular M200, M400, M500, M600, Nautilus, and many more.
The standout feature is the use of premium PVA material. Unlike some cheaper alternatives, these rings are built to last. They arrive in a dry, hard state but quickly soften after soaking in water, returning to their intended flexible form. This property also makes storage easy: simply let them dry out and they shrink down. In real world use, they provide excellent traction on pool walls and tile, ensuring consistent cleaning performance.
Build quality feels solid. The rings measure 3.62 inches in diameter and 1.02 inches thick, with a centered hole of 1.89 inches, matching factory specs. they slide onto the cleaner axles easily. One minor issue: the product has zero customer reviews yet, so long term duarbility is unproven. However, the material and dimensions suggest they will perform as expected.
no significant drawbacks beyond the need to soak before first use. There are no instructions included, but installation is straight forward: just replace the old rings with the new ones. Also check compatibility with your specific model: the list is extensive but not exhaustive.
Verdict: for the price, these replacement rings offer a cost effective fix for a common problem. They restore wall climbing ability and extend the life of your Dolphin cleaner. If you have one of the many compatible models, this set is a smart buy.
What to Look for in Dolphin M400 Replacement Brushes
Before you buy, consider these key factors to ensure you pick the right brushes for your pool and cleaning habits.
Compatibility with Your Exact Model
Not all brushes fit every Dolphin model. The M400 typically uses the 6101641-R2 grey climbing brush set, but some aftermarket options also work with M200, M500, and DX series. Always double-check the part number and compare it with your existing brush before ordering.
Brush Material and Durability
Genuine Dolphin brushes are made from a specific nylon blend that resists wear and provides the right stiffness for scrubbing. Aftermarket brushes may use different materials, so look for ones that mention ‘high-quality PVA’ or ‘plastic construction’ if you want a balance of longevity and gentle cleaning on vinyl liners.
Ease of Installation
Most Dolphin brush replacements are tool-free – you just snap them into place. However, some rear brush assemblies require removing the rear wheel, as noted in the Pool Cleaner Rear Brushe Replacement Parts. If you want a quick swap, choose a set that explicitly mentions ‘tool-free install’ or ‘easy installation’.
Genuine vs. Aftermarket
Genuine Dolphin parts (like the Dolphin Genuine Replacement Part) guarantee a perfect fit and are certified by the manufacturer. Aftermarket brushes (such as those from MAYTRONICS or Deskbloom) can be more affordable and still work well, but you need to verify compatibility carefully. For peace of mind, many pool owners stick with OEM parts.
If you’re also looking for brushes for other Dolphin models, check out our guides on Dolphin Active 60 replacement brushes and Dolphin Active 30 replacement brushes for more options.
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Frequently Asked Questions
How often should I replace the brushes on my Dolphin M400?
Most manufacturers recommend replacing the brushes every 12 to 18 months, depending on pool usage and water chemistry. If you notice the robot slipping on walls or leaving debris behind, it’s time for a new set.
Can I use aftermarket brushes on my Dolphin M400?
Yes, as long as they are compatible with the 6101641-R2 part number and your specific model. Aftermarket brushes from reputable brands like MAYTRONICS or Deskbloom can work just fine, but always verify the fit before purchasing.
What is the difference between front and rear brushes?
Front brushes are mainly for scrubbing the pool floor and walls, while rear brushes help with climbing and traction. The set usually includes both, but you can buy them separately if only one is worn out.
Do I need to replace the climbing rings as well?
Climbing rings (part number 6101611-R4) are separate from the brushes. If your robot is having trouble climbing walls, the rings might be worn or hardened. You can replace them independently, as seen with the Calvana and 4Pcs Climbing Rings options.
For more insights on maintaining your pool robot, explore our replacement brushes category or read about the best dolphin active 60 replacement brushes for similar models.
If you’re considering a new robot altogether, you might also be interested in our roundup of the best AIPER cordless robotic pool vacuums or the AIPER Scuba X1 Advanced for inground pools.
