Genuine Replacement Filter Assembly for Nautilus CC Plus & M200 (9991428-ASSY)
- Genuine Maytronics OEM Filter Assembly (Part #9991428-ASSY)
- Includes BOTH complete top-load filter cartridges with frames & latches
- Direct fit for Dolphin Nautilus CC Plus, Nautilus CC Plus Wi-Fi & M200
- Replaces cracked frames, broken clips, or torn mesh screens instantly
- Restores factory seal, suction & wall-climbing traction
or 4 interest-free payments of $22.25 with
*Rates from 0% APR. Subject to eligibility check. See payment terms.
Drop-In Complete Cartridge Replacement for Nautilus CC Plus & M200
Complete 2-Cartridge Pair
Includes both left and right top-loading filter assemblies—frames, spring clips, and fine filter screens pre-installed.
Exact 9991428-ASSY Fit
Built specifically by Maytronics for Dolphin M200, Nautilus CC Plus, and Nautilus CC Plus w/ Wi-Fi.
Restores Lost Suction
Torn screens or warped aftermarket frames leak debris into the impeller—fresh OEM seals restore full flow.
Zero Assembly Needed
Pull your old cartridges out the top doors and drop this complete pair straight in.
Chlorine-Tough ABS Frames
Genuine Maytronics UV- and chemical-resistant plastic latches hold tight cycle after cycle.
Fast Garden-Hose Cleanup
Pop open the side clips and spray debris away in seconds.
Fix Broken Clips & Torn Screens in 10 Seconds
After years of sunshine and pool chemicals, the plastic latches or mesh panels on top-load cartridges eventually wear out. Rather than fighting loose replacement panels inside warped old frames, the genuine Maytronics Replacement Filter Assembly (9991428-ASSY) gives you two brand-new complete filter cartridges ready to drop straight into your Dolphin Nautilus CC Plus, Nautilus CC Plus Wi-Fi, or Dolphin M200.
Nautilus CC Plus Filter Assembly Specs
Nautilus CC Plus Filter Assembly FAQ
Does this include one cartridge or both cartridges?
It includes both complete filter cartridges (2 assemblies total) needed for your Nautilus CC Plus or M200.
Will this fit the smaller Dolphin Nautilus CC (non-Plus)?
No—the compact Nautilus CC uses a single drop-in basket rather than twin flat cartridges. Part #9991428-ASSY is specifically for the Nautilus CC Plus, Nautilus CC Plus Wi-Fi, and M200.
We’re Here Long After Delivery Day
Genuine Maytronics OEM Part
Manufacturer-backed protection and help from authorized US service centers.
30-Day Returns
If it isn’t right for your pool, start a return within 30 days.
Fast, Free Shipping
Your cleaner ships fast and free on qualifying orders, ready for its first run.
Let the robot clean the pool. Let ICO watch the water.
ICO tests your water every hour and tells you exactly what to add—before cloudy water or algae ruins the weekend.
- Measures pH, ORP, and water temperature every hour
- Exact chemical amounts in the free iOS & Android app
- Warns you before heat or rain knocks the water out of balance
- Versions for chlorine/bromine and salt water pools (salt also tracks TDS)
ICO - The Smart Pool Water Monitor
Hourly water readings and exact dosing help—without another subscription.
Which type of pool do you have?
*Rates from 0% APR or 10–36% APR. Payment options through Shop Pay Installments are subject to an eligibility check and are provided by these lending partners: affirm.com/lenders. Options depend on your purchase amount, and a down payment may be required. State notices to consumers: affirm.com/licenses.