Maytronics
Maytronics Dolphin Cartridge Locking Hook 9980731 – Filter Cartridge Retaining Hook
Maytronics Dolphin Cartridge Locking Hook
Replacement retaining hook designed to secure the filter cartridge in confirmed compatible Dolphin robotic pool cleaners.
Warranty Information
1-Year Manufacturer Warranty
Ultimate Pools is your first point of contact for compatibility verification, installation guidance, and warranty support.
The Maytronics Dolphin Cartridge Locking Hook (9980731) is a replacement retaining component designed to secure the filter cartridge inside select Dolphin robotic pool cleaners. It helps keep the cartridge properly seated during operation.
This listing includes one locking hook for replacing a worn, damaged or missing original component. Because filter assemblies can vary between cleaner models and production versions, verify the cleaner model, product number and existing cartridge configuration before ordering.
Key Features
Helps hold the compatible filter cartridge firmly in place during cleaner operation.
Maintains the cartridge in its intended position within the filtration compartment.
Includes one hook for replacing a worn, broken or missing retaining component.
Allows the affected retaining component to be serviced without replacing the full filter assembly.
Designed for straightforward installation in confirmed compatible cleaner configurations.
Designed for the confirmed cleaner models and product numbers listed below.
Compatibility & Fitment
Compatible with the following Dolphin robotic pool cleaner models and product numbers:
- Dolphin Aquarius XL: 99991079-AQI
- Dolphin C3 CB: 99991023-C3, 99991073-C3
- Dolphin C4 CB: 99991083-C4, 99991083-C4DEMO
- Dolphin Explorer E25 IoT CB: 99996406-XPW
- Dolphin Explorer E25 IoT CB Refurbished: 88886406-XPI
- Dolphin Explorer E40 Refurbished: 88881083-XPI
- Dolphin M200 CB: 99996403-US
- Dolphin M400 CB: 99991043-US
- Dolphin M500: 99991089-US
- Dolphin Nautilus CC Plus Refurbished Open Box: 66666403-PCF
- Dolphin Nautilus CC Plus IoT CB: 99996409-PCI
- Dolphin Nautilus CC Plus IoT CB Refurbished: 88886409-PCI, 66666406-PCI
- Dolphin Nautilus CC Plus IoT Open Box: 66666409-PCI
- Dolphin Nautilus CC Supreme: 99991083-PC
- Dolphin Nautilus CC Supreme Refurbished: 88881083-PC
- Dolphin Oasis Z5 CB: 99991079-OAS
- Dolphin Supreme M4: 99991013-US, 99991013-USDEMO
- Dolphin Supreme M5: 99991086-US
- Dolphin Supreme M5 Bio-S PVC: 99991087-BIO-US, 99991087-USDEMO
- Dolphin Supreme M5 Liberty PVC: 99994101-US
- Dolphin Wave 60 CB Refurbished: 88881060-US
- Dolphin Wave 65 CB: 99991023-W65, 99991023-W65DEM
- Dolphin Wave 90 CB: 99991083-W90, 99991083-W90DEM
Also compatible with the following part;
- Net Filter 70 Assembly (M Line): 9991429-ASSY
Compatibility may vary by production year, filter configuration and cleaner version. Verify your exact model, product number and existing cartridge assembly before ordering.
Applications
- Replacing a worn cartridge locking hook
- Replacing a cracked, broken or missing retaining hook
- Securing the filter cartridge during cleaner operation
- Restoring proper cartridge positioning
- Routine Dolphin robotic cleaner maintenance
Inspect the existing cartridge assembly and remaining retaining components before ordering to confirm that 9980731 is the correct replacement hook.
Specifications
| SKU | 9980731 |
| UPC / EAN | 3701314134005 |
| Brand | Maytronics / Dolphin |
| Product Type | Robotic Pool Cleaner Cartridge Locking Hook |
| Included Components | 1 Cartridge Locking Hook |
| Product Dimensions | 0.303 × 0.689 × 1.85 in / 0.77 × 1.75 × 4.7 cm |
| Compatibility | Select Dolphin Aquarius, C-Series, Explorer, M-Series, Nautilus, Oasis, Supreme and Wave robotic pool cleaners |
| Application | Replacement filter cartridge retaining hook |
| Warranty | 1-Year Manufacturer Warranty |
| Final Sale | Yes |
Frequently Asked Questions
It helps secure the compatible filter cartridge in its intended position during cleaner operation.
This listing includes one cartridge locking hook.
No. It is designed only for the cleaner models and product numbers listed in the Compatibility & Fitment section.
Replace it when the original hook is worn, cracked, broken, missing or no longer securing the cartridge correctly.
No. This listing is for one locking hook only. The cartridge and complete filter assembly are not confirmed as included.
Yes. Confirm the cleaner model, cartridge configuration and required hook before purchasing.
This cartridge locking hook includes a 1-year manufacturer warranty, subject to the manufacturer’s applicable warranty terms and conditions.
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