You rely on your Dolphin robotic pool cleaner to keep your pool sparkling, but over time, its filter cartridges lose efficiency. Whether you’re dealing with fine dust, pollen, or larger debris like leaves, choosing the right Dolphin filter cartridge replacement makes all the difference. In this guide, we’ve evaluated six top replacements to help you find the ideal match for your cleaner and your pool’s specific needs.
From ultra-fine pleated panels to spring filters designed for heavy debris, each product offers unique benefits. We’ll walk you through key features, compatibility, and performance so you can make an informed decision. For more on keeping your pool pristine, check out our guide on Best Dolphin Fine Filters for Crystal Clear Pool Water in 2026.
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
- 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
Compatibility with Your Dolphin Model
Not all filter cartridges fit every Dolphin model. Before purchasing, confirm that the replacement matches your cleaner’s part number and model series. For example, the Poolzilla Pool Cleaner Ultra-Fine Filters are compatible with many models like the Nautilus CC Plus and M400, but not with older Nautilus CC units. Always double-check the list of compatible models provided by the manufacturer.
Using the wrong filter can lead to poor performance or damage. If you’re unsure, refer to your cleaner’s manual or check our guide on dolphin ultra fine filters for model-specific advice.
Filtration Type: Ultra-Fine vs. Spring Filters
Ultra-fine pleated filters excel at trapping tiny particles like silt and pollen, leaving your pool water crystal clear. They are ideal for routine maintenance and fine debris. On the other hand, spring filters, like the Spring Filter Cartridges Work with Dolphin, use a screen material that captures larger debris without clogging quickly. These are perfect for the first few cleanings after a storm or when the pool is especially dirty.
Consider your pool’s typical debris load. If you have lots of leaves and twigs, a spring filter may be more practical. For ongoing clarity, ultra-fine panels are the way to go.
Build Quality and Durability
Filter cartridges should withstand repeated washing and exposure to pool chemicals. Look for frames made of heavy-duty ABS plastic that resist cracking and UV damage. The M400 Ultra Fine Cartridge Filter Replacement from Funmit features a sturdy ABS frame and pleated pet filter paper, ensuring long-lasting performance. With proper care, quality filters can last two to three years.
Cheaper materials may warp or tear, reducing filtration efficiency. Investing in a well-built set saves money in the long run.
Ease of Installation and Maintenance
Most Dolphin filter replacements are designed for quick installation. Look for panels that are numbered to correspond with their position in the basket, making replacement straightforward. For instance, the Replace Part#9991467-R4 Ultra-Fine Filter Panels come numbered 1 through 4, and instructions suggest removing in order and replacing in descending order. Cleaning is simple: rinse with a garden hose to remove trapped debris.
Some models, like the Nbbiww 9980731 Cartridge Locking Hook Compatible, include locking hooks that ensure a tight seal. These clips are easy to snap on without tools and prevent debris bypass.
Final Thoughts
Choosing the right Dolphin filter cartridge replacement depends on your pool’s specific needs and your cleaner’s compatibility. For superior fine filtration and long-lasting clarity, we recommend the Poolzilla Pool Cleaner Ultra-Fine Filters for their excellent build and broad compatibility. If you’re dealing with heavy debris and need a filter that won’t clog quickly, the Spring Filter Cartridges Work with Dolphin from Kerneed is a cost-effective choice that handles larger particles with ease. Either way, regular maintenance and timely replacements will keep your pool inviting all season long.
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Frequently Asked Questions
How often should I replace my Dolphin filter cartridges?
With regular use, Dolphin filter cartridges typically need replacement every one to two years, depending on debris load and cleaning frequency. Rinse them weekly during peak season to extend their life. For more tips, see our guide on dolphin fine filter basket.
Can I use a third-party filter in my Dolphin cleaner?
Yes, many third-party filters are designed to be compatible with Dolphin models and often match or exceed OEM quality. Just ensure the part number matches your cleaner’s requirements. Brands like Poolzilla and Funmit offer reliable alternatives that are widely used by pool owners.
What is the difference between ultra-fine and spring filters?
Ultra-fine filters use pleated fabric to trap microscopic particles, ideal for clear water. Spring filters have a mesh screen that captures larger debris like leaves and twigs without clogging. Many owners use spring filters for initial cleanings and ultra-fine for ongoing maintenance.
How do I clean Dolphin filter cartridges properly?
Remove the panels and spray them with a garden hose from the inside out to dislodge trapped debris. For stubborn dirt, use a gentle stream of water. Avoid using harsh chemicals or brushes that could damage the filter material. Allow them to air dry completely before reinstalling.
