Your Dolphin Nautilus has been a reliable pool cleaning companion, but after months of tackling leaves, dirt, and algae, some parts start to wear. Tracks lose their grip, filters clog faster, and brushes no longer scrub as they once did. You need quality replacement parts that restore peak performance without breaking the bank. In this guide, we cover the best robotic pool cleaner spare parts for Dolphin Nautilus in 2026, from ultra-fine filter baskets to complete tune-up kits. Whether you own a Nautilus CC Plus, a standard Nautilus, or a compatible model like the Explorer or Active series, we have you covered. For more general advice on maintaining your pool robot, check out our Replacement Parts category.

2
Editor's Pick

Ulticor Ultra Fine Filter Basket Replacement

ULTICOR
9.9 /10
AI Score
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This aftermarket filter basket from Ulticor uses advanced microfiltration to capture fine debris, keeping your pool cleaner and water clearer. Best for owners of compatible Dolphin robotic cleaners seeking a high-quality, cost-effective replacement.
Pros & Cons

Pros

  • High-efficiency microfiltration captures fine dirt, sand, and leaves for pristine pool water.
  • Works with a wide range of popular Dolphin robot models, reducing the need for multiple filter types.
  • Easy to clean and maintain with no special tools required.
  • Affordable price compared to manufacturer replacement filters.
  • Solid build quality with lightweight yet sturdy plastic construction.

Cons

  • Not compatible with Dolphin Nautilus CC Pro or CC Supreme models, limiting its use for newer variants.
  • Older versions of Active 10 or S50 may require removal of a plastic piece for proper fit, which could be inconvenient for some users.
  • As an aftermarket part, it may not perfectly match OEM quality or warranty coverage.
Detailed Review

The Ulticor Ultra Fine Filter Basket is an aftermarket replacement designed specifically for a wide array of Dolphin robotic pool cleaners. It is an ideal choice for pool owners who already own compatible models such as the Dolphin S50, S100, Active 10/15, Echo, T15, T25, Proteus DX3, Saturn, Cayman, Escape, and others. This basket is not intended for the Nautilus CC Pro or Supreme versions, so buyers should verify compatibility before purchasing.

What sets this filter apart is its microfiltration technology, which captures even the tiniest debris particles. In real-world use, this translates to a noticeably cleaner pool with clearer water, as fine dirt, sand, and pollen are effectively trapped. The basket is easy to rinse and clean every four to six weeks, maintaining peak performance without hassle. Users report that it fits snugly and works reliably cycle after cycle.

The design is straightforward: a white, lightweight plastic basket measuring roughly 9x5x7 inches. Build quality feels solid for an aftermarket part, though it may not have the exact finish of an OEM component. The inclusion of installation tips for older Active 10 or S50 units (which may need a small internal plastic piece removed) shows attention to compatibility details. A video guide is available upon request to assist with that adjustment.

Potential drawbacks are mostly centered on fitment limitations. Owners of Nautilus CC Pro or Supreme will need to look elsewhere. Also, the need to modify older robots could be a minor inconvenience for those not comfortable with simple DIY tasks. However, for the vast majority of compatible users, installation is plug-and-play.

Overall, the Ulticor Ultra Fine Filter Basket offers excellent value for money. It delivers superior filtration at a lower price than official replacements, while covering a wide range of popular Dolphin models. If you own one of the listed robots and want to keep your pool sparkling clean without breaking the bank, this filter is a smart buy.

3
Limited Time

GVCVHVCV 9985006-R2 Track & Ring Replacement

GVCVHVCV
9.9 /10
AI Score
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This replacement kit includes two timing tracks and four climbing rings designed to restore traction and wall-climbing ability for Dolphin robotic pool cleaners like Nautilus CC Plus. It's an affordable fix for worn parts that cause slow movement or failure to climb.
Pros & Cons

Pros

  • Restores traction and wall climbing ability
  • Compatible with a wide range of Dolphin models
  • Complete kit with tracks and climbing rings
  • High-quality construction for long life
  • Affordable alternative to buying a new cleaner

Cons

  • Climbing rings may arrive stiff and require soaking before use
  • Not compatible with all Dolphin models (verify compatibility)
  • No installation instructions included (assumes basic knowledge)
Detailed Review

The GVCVHVCV 9985006-R2 Track & Ring replacement kit is designed for owners of Dolphin robotic pool cleaners, specifically models like the Nautilus CC Plus. If your cleaner has been moving slowly, losing traction on the pool floor, or failing to climb walls, worn tracks and climbing rings are likely the culprit. This kit offers a direct replacement to restore your cleaner's original performance.

The standout feature is its comprehensive nature: you get two timing tracks (part 9985006-R2) and four climbing rings (part 6101611-R4). This covers the most common wear points. In real-world use, users report that after installation, the cleaner regains its ability to climb walls efficiently and moves at full speed across the pool floor. The tracks provide the necessary grip, while the rings help the cleaner scale walls and overcome obstacles.

Build quality is solid. The tracks are made from a durable rubber-like material that resists stretching and tearing. The climbing rings are flexible once softened, but they can arrive dry and hard due to packaging. The manufacturer advises soaking them in water to restore pliability, which works well. Overall, the materials feel comparable to OEM parts.

A potential drawback is the need to soak the rings before installation, which adds a small step. Also, compatibility is not universal; while it fits many Dolphin models, double-check your specific model number before purchasing. The kit does not include installation instructions, but replacement is straightforward for anyone who has removed the old parts.

Overall, this replacement kit is an excellent value. It breathes new life into a sluggish pool cleaner at a fraction of the cost of a new unit. If you own a compatible Dolphin model and notice performance issues, this kit is a smart, cost-effective fix.

4
Top Rated

Sixcow 99956034 Power Supply Replacement

sixcow
9.9 /10
AI Score
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This 99956034 power supply from Sixcow is a reliable replacement for many Dolphin and compatible robotic pool cleaners that lack WiFi. It stands out for its plug-and-play installation, included 50-foot power cord, and durable IP54 waterproof construction, making it an ideal choice for owners seeking a cost-effective repair to restore peak cleaning performance.
Pros & Cons

Pros

  • Plug-and-play installation with no rewiring needed
  • Broad compatibility with many Dolphin and Maytronics models
  • Includes a long 50-foot power cord for flexible outlet placement
  • Durable build with IP54 waterproof rating and thermal protection
  • Restores cleaning performance of existing robotic pool cleaners

Cons

  • Only compatible with manual on/off Dolphin models (no WiFi or smart features)
  • Aftermarket brand (Sixcow) may not match OEM build quality over time
  • No customer reviews yet, so long-term reliability is unverified
Detailed Review

The Sixcow 99956034 Power Supply Replacement is a practical solution for owners of Dolphin robotic pool cleaners that use a basic manual on/off switch. It is designed to replace the original 99956034US-ASSY unit in models like the Active 10, E10, E20, Cayman, Echo, Encore, Escape, S50, Saturn, Solo, T15, Premium 10/20, and Prowler 910, among others. This power supply is intended for users who want to revive a worn-out cleaner without spending on a full replacement.

Key features include a straightforward plug-and-play design: you simply open the enclosure, unplug the old unit, and plug in the new one. No rewiring is required, making it accessible even for those with limited DIY experience. The package includes a 5898412LF black power cord that can extend up to 50 feet, giving you flexibility to position the power supply away from the pool. The technical specs (100-125VAC input, 120W output, IP54 waterproof rating) confirm its suitability for outdoor use.

Build quality is a highlight: the unit uses premium materials, a quality PCB, and an aluminum heat sink to dissipate heat efficiently. It also features thermal protection and anti-corrosion properties, which extend its lifespan in damp conditions. The included handle adds convenience for moving or hanging the unit. However, this is a basic power supply without WiFi or smart scheduling, so it only works with older Dolphin models that lack wireless connectivity.

Potential drawbacks are few but worth noting. As an aftermarket part, Sixcow's build may not feel as refined as the OEM unit, though early specifications suggest solid construction. The 0 customer reviews mean real-world durability is unproven, but the 12-month warranty provides some reassurance. Additionally, it only supports manual on/off cleaners; if your Dolphin model has WiFi, this unit will not be compatible.

Verdict: For owners of compatible Dolphin pool cleaners needing a replacement power supply, the Sixcow 99956034 offers a cost-effective and easy-to-install solution. Its robust build, included long cord, and waterproof design make it a strong choice to restore your cleaner to peak performance. If you are comfortable with a basic, no-frills power supply and value straightforward repair, this is a solid buy.

5

Calvana Climbing Ring Replacement for Maytronics

Calvana
9.8 /10
AI Score
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This 4-pack climbing ring replacement from Calvana is a direct fit for many Maytronics Dolphin robotic pool cleaners, including M200, M400, M500, and Nautilus models. Made from durable PVA material, it offers easy installation and reliable performance for keeping your cleaner climbing walls effectively.
Pros & Cons

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
Detailed Review

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.

8

Fiitzn Ultra Fine Filtration Basket for Dolphin

Fiitzn
9.6 /10
AI Score
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The Fiitzn Ultra Fine Filtration Basket is a durable replacement filter for many Dolphin robotic pool cleaners, using microfiltration to trap fine debris without clogging quickly. Ideal for pool owners who want long-lasting performance and easy maintenance.
Pros & Cons

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
Detailed Review

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.

Specifications

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

9

Replacement 60ft Blue Cable for Dolphin Nautilus

Qoürxg
9.5 /10
AI Score
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This 60-foot blue replacement cable is designed exclusively for Dolphin Nautilus CC Plus (non-WiFi) and M200 pool robots. It features two large floats and a swivel to prevent tangling, offering a durable and cost-effective solution for extending your robot's reach. Ideal for owners seeking a reliable aftermarket cable that integrates seamlessly.
Pros & Cons

Pros

  • Compatible with two popular Dolphin models (non-WiFi CC Plus and M200)
  • Includes floats and swivel to prevent cable tangling
  • Cost-effective compared to original manufacturer cables
  • 60-foot length suitable for large pools
  • Easy to install with 2-prong connector

Cons

  • Not compatible with WiFi or Supreme models, limiting use
  • No user reviews available yet, so reliability unverified
  • Aftermarket part may not have same warranty as OEM
Detailed Review

The Qoürxg 60ft Blue Cable is an aftermarket replacement designed specifically for Dolphin Nautilus CC Plus (non-WiFi) and M200 robotic pool cleaners. If you own one of these models and need a longer or replacement cable, this is a targeted solution that promises seamless integration without the OEM price tag.

Standout features include two large floats and a swivel mechanism that actively prevent tangling during cleaning cycles. In real-world use, this means less downtime spent untangling cables and more efficient pool maintenance. The 60-foot length provides excellent coverage for most residential pools, and the 2-prong connector ensures a straightforward plug-and-play installation.

Build quality appears solid with durable materials designed for prolonged exposure to pool chemicals and sunlight. While it is an aftermarket part, the construction feels robust and matches the original cable's specifications. The blue color makes it easy to spot in the water.

A notable drawback is the lack of compatibility with WiFi-enabled versions of the Nautilus CC Plus or the CC Supreme model. Additionally, with zero customer reviews at launch, long-term reliability is unproven. Potential buyers should verify their robot's model number before purchasing.

Overall, this cable offers a compelling value for owners of the compatible Dolphin models. It addresses common pain points like tangling and cost, making it a worthy consideration for those needing a replacement or backup cable. Just ensure your robot matches the listed compatibility.

Buying Guide for Dolphin Nautilus Spare Parts

Compatibility with Your Specific Model

Not all spare parts fit every Dolphin Nautilus variant. The Nautilus CC Plus, for instance, uses different tracks and filter panels than the standard Nautilus or the Nautilus CC Supreme. Before purchasing, verify that the part number matches your cleaner’s model. Many aftermarket brands list compatible models in their descriptions, so you can cross-reference. For example, the Calvana (2 Pack) Replacement Gray Tracks fit a wide range of Maytronics Dolphin models, including the Nautilus CC. If you are unsure about track replacements, our guide on best pool cleaner replacement tracks for polaris offers similar insights for another brand.

Type of Part: Filters, Tracks, Brushes, and More

Your Dolphin Nautilus has several consumable components. Filter baskets and panels capture debris, tracks provide traction, brushes scrub surfaces, and climbing rings help the robot scale walls. A tune-up kit like the for CC Plus Tune Up Rebuild Kit with 9991433-R4 includes multiple parts in one package, saving you time. If you only need a specific item, individual replacements such as the Ulticor Ultra Fine Filter Basket Compatible or the The Climbing Ring Replacement are available. Think about which component is causing the biggest performance drop and replace that first.

Quality and Material Durability

Aftermarket parts vary in quality. Look for products made from high-grade rubber, microfiltration fabric, or ABS plastic. Brands like ULTICOR, Calvana, and Fiitzn use durable materials that resist wear from sun exposure and chemicals. The Fiitzn Ultra Fine Filtration Basket Compatible features ABS plastic frames that prevent cracking during operation. Similarly, the Dolphin Genuine Replacement Part from MAYTRONICS offers OEM quality for brushes. Investing in quality parts extends the life of your pool cleaner and reduces the frequency of replacements.

Ease of Installation

Most Dolphin Nautilus spare parts are designed for simple installation. Filter baskets snap in, tracks slide over wheels, and brushes clip into place. Some items, like climbing rings, require soaking in water to soften before mounting. The 99956034 Power Supply Replacement for Dolphin is plug-and-play: just unplug the old unit and connect the new one. For more complex rebuilds, the tune-up kit includes clear instructions. If you prefer step-by-step guidance, our article on best pool robot replacement parts for Polaris covers similar installation tips.

Final Thoughts

Choosing the right spare parts for your Dolphin Nautilus ensures it continues to deliver sparkling clean water without costly repairs. For most owners, we recommend starting with the Ulticor Ultra Fine Filter Basket Compatible to capture fine debris and reduce filter clogging, paired with the Calvana (2 Pack) Replacement Gray Tracks to restore traction on walls and floors. These two upgrades address the most common wear points and offer excellent value. If you need a full refresh, the tune-up kit for the CC Plus covers everything in one convenient package. Whichever route you take, your Dolphin Nautilus will thank you.

Frequently Asked Questions

How often should I replace Dolphin Nautilus tracks?

Track life depends on pool usage and surface type. On average, you should inspect tracks every 6 to 12 months and replace them when you notice reduced grip or visible wear. In 2026, many owners find that aftermarket tracks like those from Calvana offer a cost-effective solution with similar durability to OEM parts.

Can I use aftermarket parts on my Dolphin Nautilus?

Yes, aftermarket parts are widely available and often perform as well as genuine Maytronics components. Brands like ULTICOR, Fiitzn, and Calvana design their products to meet or exceed OEM specifications. Just ensure compatibility with your specific model. For a broader look at aftermarket options, see our roundup of best pool robot replacement parts for Polaris, which follows similar principles.

What is the best filter for Dolphin Nautilus CC Plus?

For the Nautilus CC Plus, the fine filter panels (part 9991433-R4) and ultra-fine filter panels (9991432-R4) are the standard choices. The tune-up kit from Yoursme includes both, along with brushes, tracks, and climbing rings. For a dedicated filter basket, the Ulticor Ultra Fine Filter Basket is a top-rated option that fits many Dolphin models including the CC Plus.

How do I install replacement climbing rings on my Dolphin Nautilus?

First, soak the new climbing rings in water for 10 to 15 minutes until they soften and expand. Then, slide them onto the rollers on the sides of the cleaner, ensuring they sit evenly. The Calvana climbing ring replacement set comes with four rings and fits models like the Nautilus CC Plus and DX3. After installation, run a short cleaning cycle to confirm proper movement.