Your Dolphin robotic pool cleaner works hard to keep your pool spotless, but even the best robot needs quality filter cartridges to trap debris effectively. Over time, standard filters wear out or clog, reducing suction and leaving your water cloudy. Whether you own a Dolphin Nautilus CC Plus, M400, S200, or an older model, choosing the right replacement cartridges is essential for maintaining peak performance. In this guide, we have evaluated nine top-rated Dolphin pool cleaner filter cartridges, including ultra-fine panels, spring filters, and conversion kits, to help you find the perfect fit for your pool and budget.
If you are new to filter replacements, start by checking your cleaner’s model number and current filter type. Many Dolphin models use interchangeable cartridges, but compatibility varies. For a deeper look at fine filter options, read our guide to the best Dolphin fine filters.
Pros
- Ultra-fine filtration traps even tiny particles for superior water clarity.
- Easy numbered installation system reduces setup time and guesswork.
- Washable and reusable design offers long-term value and eco-friendliness.
- Broad compatibility with many Dolphin and Maytronics robotic pool cleaner models.
- Sturdy build quality withstands regular use and cleaning without tearing.
Cons
- May require more frequent cleaning than standard filters due to ultra-fine mesh trapping more debris.
- Not compatible with all Dolphin models; double-check compatibility before purchase.
- Some users may find the initial fit slightly tight on certain cleaner baskets.
The Henkgo ultra-fine filter panels are a direct replacement for the OEM part 9991467-R4, designed specifically for Dolphin robotic pool cleaners. These pleated cartridge filters are ideal for pool owners who want to maintain sparkling water without frequent skimming. They fit a wide range of models including the S200, Active 20, Proteus DX4, M600, and many more, making them a versatile upgrade for most Dolphin owners.
Standout features include the ultra-fine pleated material that captures sand, gravel, leaves, and even microscopic debris. In real-world use, these filters dramatically improve water clarity compared to standard mesh filters. The numbered panels (1-4) simplify installation: remove in order and replace in reverse, so even first-time users can swap them in minutes. The filters are also washable with a garden hose, retaining their shape and effectiveness after repeated cleanings.
Build quality is reassuringly sturdy. The pleated material holds up well under water pressure and regular cleaning. Each panel measures 9 x 8 x 2.1 inches and weighs just over a pound, making them lightweight yet durable. The white color blends inconspicuously into most pool cleaner baskets. Compatibility is extensive, covering over 25 Dolphin and Maytronics models, which adds significant value for households with multiple cleaners or future upgrades.
One potential drawback is that the ultra-fine mesh may clog faster than coarser filters, especially in heavily debris-laden pools. This means more frequent cleaning sessions, but the ease of rinsing offsets this inconvenience. Additionally, while compatibility is broad, it is not universal, so buyers should verify their specific model before ordering. The initial fit on some cleaner baskets might feel snug, but this ensures a secure seal.
Overall, the Henkgo ultra-fine filter panels offer an excellent balance of performance, durability, and affordability. They deliver professional-grade filtration at a fraction of the OEM cost. For Dolphin pool cleaner owners seeking clearer water and less maintenance, these filters are a smart investment. The simple installation and reusable design make them a practical choice for any pool season.
Pros
- Microfiltration prevents clogging and maintains strong suction for thorough cleaning
- Sturdy ABS construction ensures durability even in heavy-duty use
- Wide compatibility saves hassle of finding exact match for various Dolphin models
- Simple maintenance with periodic rinsing; no tools required
- Cost-effective alternative to OEM parts with comparable performance
Cons
- May require more frequent rinsing if the pool is heavily soiled or has fine debris
- Only one basket included; some pool owners may need to purchase additional for larger pools
- Not compatible with all Dolphin models; verify compatibility list before purchase
The Fiitzn Ultra Fine Filtration Basket is a replacement filter designed for a wide range of Dolphin robotic pool cleaners, including models like the S50, Active 15, Echo, Nautilus CC, Encore, E10, E20, Proteus DX3, Solo, and Advantage. This part (9991460-R1) is ideal for pool owners seeking an affordable, high-performance alternative to the original filter. It is especially suited for those who want to improve water clarity by trapping fine particles without sacrificing cleaning efficiency.
The standout feature of this basket is its microfiltration technology, which captures small debris while allowing larger particles to pass through. This design prevents the filter from clogging quickly, ensuring consistent suction and longer cleaning cycles. In real-world use, this means less downtime for rinsing and more effective pool maintenance, even in dirty conditions. The basket maintains strong performance over weeks of use before needing a quick rinse.
Build quality is solid thanks to the ABS plastic frame, which resists cracking and deformation under pressure. The filter layer is securely supported, reducing the risk of tearing during operation. Installation is straightforward: it fits exactly like the original part, so no modifications or adapters are needed. Rinsing every 4-6 weeks keeps it working optimally, and with proper care, the basket can last 2-3 years, offering excellent value.
One potential drawback is that in extremely dirty pools, the filter may need more frequent rinsing to maintain flow. Additionally, the package includes only one basket, so owners of larger pools might need to buy a second. Also, while compatibility is broad, it does not cover every Dolphin model, so double-checking the list is wise. These are minor trade-offs for the price and performance.
Overall, the Fiitzn Ultra Fine Filtration Basket delivers on its promise of efficient fine debris capture and durability. It is a smart upgrade or replacement for Dolphin pool cleaner owners who want to keep their water crystal clear without breaking the bank. The combination of microfiltration, sturdy construction, and broad compatibility makes it a reliable choice for routine pool care.
Dimensions: 9.1 x 7.1 x 5.3 inches
Weight: 1 pound
Material: ABS plastic frame with microfiltration mesh
Compatibility: Dolphin models S50, S100, Active 15, Echo, T15, Proteus DX3, E20, Cayman, Escape, Nautilus CC, Encore, E10, Solo, Advantage
Replaces OEM Part: Maytronics 9991460-R1
Maintenance: Rinse every 4-6 weeks; expected lifespan 2-3 years with proper care
Pros
- Superior filtration from ultra fine pleated material, outperforming standard non-pleated filters.
- Durable ABS frame withstands regular use and chemical exposure without cracking.
- Cost-effective 4-pack reduces per-cartridge cost and frequency of replacement.
- Easy to clean and reuse, extending the life of each filter panel.
- Backed by a 1-year warranty for added confidence.
Cons
- Not compatible with older Nautilus CC, Nautilus (original), or Triton models; verify your robot before ordering.
- Some users may find the initial fit slightly snug in certain robot models, though it settles over time.
- Pleated filters may require more frequent rinsing in heavy-debris pools compared to coarse mesh options.
The SUNRRA Ultra Fine Filters are a versatile replacement option for a wide range of Dolphin robotic pool cleaners, including the Nautilus CC Plus, CC Supreme, M200, M400, M500, and many others. If you own one of these popular Maytronics models and want to improve water clarity, this 4-pack of pleated cartridges is a smart upgrade.
What sets these filters apart is their ultra fine pleated construction. Unlike standard non-pleated cartridges that let fine sediment slip through, the dense pleats trap even tiny particles like algae, pollen, and dust. The result is noticeably clearer pool water and a cleaner floor after each cycle. In real-world use, the filtration performance is excellent, especially for pools that struggle with cloudy water.
The build quality is solid: the frame is made from heavy-duty ABS plastic that resists cracking and tearing, even after repeated rinsing and seasonal storage. SUNRRA claims a lifespan of 2-3 years, which is reasonable if you clean them every 4-6 weeks. The 4-pack also means you have spares on hand, saving you from last-minute replacements.
One important note: these filters are not compatible with the original Nautilus CC, older Nautilus, or Triton series models. Always double-check your robot's model number before purchasing. Also, because the pleats are so fine, they may clog faster in pools with heavy leaf debris; you may need to rinse them more often than coarse mesh filters.
Overall, the SUNRRA Ultra Fine Filters offer excellent value for Dolphin owners who want premium filtration without paying premium prices. The 1-year warranty adds peace of mind, and the 4-pack ensures you're set for multiple seasons. If your robot is compatible, this is a highly recommended upgrade for crystal-clear pool water.
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: How to Choose the Right Dolphin Pool Cleaner Filter Cartridges
Selecting the best filter cartridges for your Dolphin pool cleaner comes down to a few key factors. Below, we break down the most important criteria to consider before making a purchase.
Compatibility with Your Dolphin Model
Not all filter cartridges work with every Dolphin cleaner. Some models, like the Nautilus CC Plus and M400, use part number 9991432-R4, while others require 9991467-R4 or a conversion kit like 9991414-R1. Always verify your cleaner’s model number and the part number listed on your current filter. A mismatch can lead to poor fit and reduced filtration. For a detailed compatibility list, check our Dolphin ultra-fine filters guide.
Many aftermarket brands, such as SUNRRA and Kerneed, explicitly list compatible models. For example, the Poolzilla Ultra-Fine Filters fit the 9991432-R4 series, while the Fiitzn Ultra Fine Filtration Basket is designed for older models like the S50 and Nautilus CC. Double-checking before ordering saves you time and hassle.
Filtration Efficiency: Ultra-Fine vs. Spring Filters
Most Dolphin filter cartridges fall into two categories: ultra-fine pleated panels and spring (or mesh) filters. Ultra-fine filters, like those from Henkgo and CLLOMAGY, capture tiny particles such as pollen, algae, and fine dust, leaving water crystal clear. They are ideal for routine maintenance. Spring filters, such as the Kerneed Spring Filter Cartridges, use a screen material that traps larger debris without clogging quickly. They are perfect for the first few cleanings after a heavy storm or when your pool is especially dirty. Some users combine both types: start with spring filters for heavy debris, then switch to ultra-fine for polishing.
If you prioritize maximum clarity, choose ultra-fine. For versatility in dirty conditions, consider a spring filter set. Learn more about the differences in our dolphin fine filter basket.
Build Quality and Durability
A well-constructed filter cartridge can last two to three years with proper care. Look for frames made of heavy-duty ABS plastic, which resists cracking and deformation under water pressure. The filter media should be pleated or layered to maximize surface area. Brands like Funmit and SUNRRA emphasize reinforced frames and high-quality filter paper. Cheaper options may warp or tear after a few uses. Reading user reviews and checking the material specifications can help you gauge longevity.
All the products in our list are washable and reusable, which extends their lifespan. Regular rinsing every four to six weeks maintains optimal flow. For more tips on maintaining your filters, see our guide to replacement filter baskets.
Ease of Installation and Cleaning
Most Dolphin filter cartridges pop in and out without tools. The 9991414-R1 conversion kit, for example, replaces the entire bottom lid assembly, upgrading bag-style cleaners to cartridge filtration. Others, like the 9991467-R4 panels, are numbered for easy positioning. Simply remove the old filters in order and install the new ones in reverse. Cleaning is straightforward: rinse with a garden hose on a gentle setting. Avoid high pressure, which can damage the pleats. Some models, such as the Fiitzn basket, require removing the entire basket assembly, but the process remains simple.
If you are upgrading from a bag system, the conversion kit is a game changer. It simplifies maintenance and improves filtration. Check out our best ultra-fine filter basket picks for more easy-to-clean options.
Final Thoughts
Choosing the right Dolphin pool cleaner filter cartridges ensures your robot runs efficiently and your pool stays inviting. For most users, the Poolzilla Pool Cleaner Ultra-Fine Filters offer an unbeatable balance of performance and value, capturing fine debris with ease. If you need a durable, high-capacity option for heavy-duty cleaning, the SUNRRA Ultra Fine Filters Compatible with Dolphin provide excellent build quality and long-lasting results. Both are washable, reusable, and backed by reliable customer support. No matter which you choose, replacing your filters regularly is the simplest way to keep your pool sparkling all season long.
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Frequently Asked Questions
How often should I replace Dolphin pool cleaner filter cartridges?
With proper care, Dolphin filter cartridges can last two to three years. However, you should rinse them every four to six weeks during peak swimming season. Replace them when you notice tears, warping, or a significant drop in suction. In 2026, many aftermarket options offer the same lifespan as OEM parts at a fraction of the cost.
Can I wash and reuse Dolphin filter cartridges?
Yes, almost all Dolphin filter cartridges are washable and reusable. Use a garden hose with moderate pressure to rinse away trapped debris. Avoid using a pressure washer or harsh chemicals, which can damage the filter media. Allow the cartridges to air dry completely before reinstalling. Regular cleaning extends their life and maintains filtration efficiency.
Are aftermarket filter cartridges as good as OEM Dolphin filters?
Many aftermarket brands, such as SUNRRA, Kerneed, and Poolzilla, produce filter cartridges that match or exceed OEM quality. They use similar materials and are designed to fit perfectly. The main advantage is cost savings, often half the price of OEM. However, always verify compatibility with your specific model. For a detailed comparison, see our replacement filters category.
What is the difference between fine and ultra-fine filter cartridges?
Fine filter cartridges typically use a mesh or screen material that traps larger debris like leaves and sand. Ultra-fine filters use pleated fabric that captures microscopic particles such as pollen, algae, and dust. Ultra-fine filters provide clearer water but may clog faster in very dirty pools. Many users start with fine filters for heavy cleaning and switch to ultra-fine for routine maintenance.
