Picture this: you pull your robotic pool cleaner out of the water after a cycle, only to find it still has sand in the corners and streaks on the floor. The brushes are worn, the filters are clogged, and the tracks have lost their grip. Before you consider buying a whole new unit, know that replacing worn parts can bring your pool robot back to life at a fraction of the cost. In this guide, we’ve carefully evaluated eight robotic pool cleaner replacement parts from top brands like Dolphin, Funmit, TUOWS, and more, covering everything from filters and brushes to motors and climbing rings. Whether you own a Dolphin Nautilus CC Plus or a Betta skimmer, these parts can keep your pool sparkling. For more budget-friendly options, also browse our selection of replacement parts category.
Pros
- Designed to replace Maytronics 9991432-R4 for many Dolphin robotic cleaner models
- Ultra fine pleated media traps both small particles and larger debris effectively
- Reinforced ABS frame keeps the filter stable during operation
- 4 pack provides good value and a longer interval before you need to reorder
- Simple maintenance with periodic rinsing every 4 to 6 weeks
Cons
- Not compatible with many Dolphin models such as Nautilus CC, M600, S200, Triton PS, and others, so check fit carefully before buying
- Aftermarket part is not an original Maytronics product, which may matter to some buyers
- No customer reviews are available yet, so long-term real-world performance is less proven
The Funmit M400 Ultra Fine Cartridge Filter is a 4 pack replacement designed for the Dolphin Nautilus CC Plus and a wide range of compatible robotic pool cleaners. It replaces Maytronics part 9991432-R4, making it a practical option for pool owners who want dependable filtration without the premium price of the OEM part.
The standout feature is the ultra fine pleated filter paper, which captures sand, leaves, hair, and other debris while maximizing surface area. The heavy duty ABS plastic frame keeps the pleats stable during operation and prevents the filter from deforming under water flow, so the cleaner maintains strong suction and consistent performance.
Maintenance is straightforward: rinsing the filter every 4 to 6 weeks is enough to keep it working well, and with proper care each filter can last 2 to 3 years. The 4 pack is especially convenient for owners who clean frequently or have a large pool, because there is always a fresh filter on hand.
The main drawback is compatibility. This filter does not fit several popular Dolphin models, including Nautilus CC, M600, S200, Triton PS, and others, so it is essential to verify your pool cleaner model before purchasing. As an aftermarket part, it also does not carry the original manufacturer branding, though the build quality is solid for the price.
Overall, the Funmit M400 filter replacement offers strong filtration, durable construction, and good value for owners of compatible Dolphin robotic cleaners. If you confirm the fit first, this 4 pack is a smart, budget friendly way to keep your pool clear all season.
Color: White
Dimensions: 10.5 x 6.375 x 10.5 inches
Package includes: 4 cartridge filters
Replaces Maytronics part 9991432-R4
Compatible with Dolphin Nautilus CC Plus, M400, M500, M200, M4, M5, Wave 65, Wave 90, C3, C4, Oasis Z5i, Aquarius XL, Liberty, Odyssey, Sigma, Triton Plus (old)
Buying Guide: What to Look for in Robotic Pool Cleaner Replacement Parts
1. Compatibility with Your Pool Cleaner Model
Before purchasing any replacement part, double-check that it fits your specific robotic pool cleaner model. Many parts are designed exclusively for certain brands and series—for instance, the Pool Cleaner Rear Brushe Replacement Parts fits Dolphin M600 and similar models, while the for CC Plus Tune Up Rebuild Kit with 9991433-R4 is tailored for Maytronics Dolphin Nautilus CC Plus. Always cross-reference part numbers like 9991433-R4 or 6101611-R4 to ensure a perfect fit. When in doubt, consult your cleaner’s manual or contact the seller.
2. Material Quality and Durability
Pool environments are tough: UV rays, chlorine, and constant friction can degrade cheap parts quickly. Look for premium materials such as high-toughness elastic polymers for brushes, heavy-duty ABS plastic for filter frames, and corrosion-resistant metals for motors. For example, the M400 Ultra Fine Cartridge Filter Replacement from Funmit uses reinforced PET fiber with pleated design, while the Betta Genuine Robotic Pool Skimmer Motor Rotor and Propeller Replacement Set is made of original components built to last. Investing in durable parts saves you from frequent replacements.
3. Filtration Efficiency and Cleaning Performance
If your pool cleaner’s filters are clogged or worn, it can’t trap fine particles like sand and algae. High-efficiency filters with multi-layer pleating, like the 4 Pack for Hayward Sharkvac Filters RCX70101PAK2, capture everything from large leaves to microscopic debris. Also consider tune-up kits that replace filters, brushes, and tracks together for balanced performance.
4. Ease of Installation and Maintenance
No one wants to spend hours tinkering with a complex replacement. Look for parts designed for straightforward installation, like the all-in-one rear brush assembly from LBLVBNEWD that eliminates missing pieces, or the climbing foam rings from Vizava that simply soften in water and slide on. Clear instructions and easy maintenance extend the life of your cleaner. For more tips, check out our guide on best pool cleaner replacement wheels for WYBOT.
Final Thoughts
Choosing the right robotic pool cleaner replacement parts depends on your specific model and what needs upgrading. For budget-conscious owners who need a quick fix for their Pooloob PF1, the Pooloob PF1 Robotic Pool Cleaner Replacement Parts kit offers unbeatable value with brushes and wheel rings. If your Dolphin cleaner requires a major power unit replacement, the Genuine Dolphin Replacement Part motor ensures factory-quality performance. Restore your pool robot’s efficiency and enjoy a crystal-clear pool all season long.
Related Guides
- Top Robotic Pool Cleaners for Pollen in 2026
- How Do Robotic Pool Cleaners Map a Pool
- Can Robotic Pool Cleaners Pick Up Acorns
Frequently Asked Questions
How often should I replace the brushes on my robotic pool cleaner?
Most manufacturers recommend inspecting brushes every three to six months and replacing them when the bristles are worn down or broken. Signs include reduced scrubbing power and visible gaps in the brush pattern. For premium models like Dolphin M600, the rear brush can be replaced individually with compatible parts.
Can I use generic replacement filters in my Dolphin pool cleaner?
Yes, many third-party filters are made to exact specifications of OEM parts, like the Funmit M400 Ultra Fine Cartridge Filter Replacement that fits Dolphin Nautilus CC Plus. Always verify the part number (e.g., 9991432-R4) to ensure proper fit and filtration performance.
What does a tune-up kit for a pool cleaner include?
A typical tune-up kit includes fine and ultra-fine filter panels, brushes, tracks, and climbing rings. The Yoursme kit for Dolphin Nautilus CC Plus is a great example, covering all major wear items to restore full functionality. These kits are cost-effective compared to buying parts individually.
How do I know if my pool cleaner’s motor needs replacement?
If the cleaner moves slowly, makes unusual noises, or stops intermittently even after cleaning filters and tracks, the motor may be failing. The Genuine Dolphin Replacement Part motor unit is a reliable fix for many Dolphin models like S100 and Nautilus CC. For other models, check our top pool cleaner replacement cables for dolphin premier guide for related issues.
