Maytronics 99919116 Bottom Lid Assembly with Support (Dolphin Robotic Pool Cleaner Replacement Part)

The Maytronics 99919116 is a genuine Dolphin robotic pool cleaner bottom lid assembly with support. It is commonly listed as a complete bottom lid assembly (D. Basic & Support) used on many Dolphin cleaner models, and it serves as the lower assembly where the filter bag/support components mount.

Key Features

• Part number: 99919116
• Brand: Maytronics (Dolphin genuine part)
• Product type: Bottom lid assembly with supports
• Common description: Bottom Lid Assy D. Basic & Support / Bottom Lid Assy and Rails
• Function: Lower cover assembly for compatible Dolphin robotic pool cleaners
• Commonly listed warranty: 1 year (listing/manufacturer dependent)

What This Part Does

• Replaces a damaged, worn, or missing bottom lid assembly on compatible Dolphin cleaners
• Provides the lower support structure for filter bag/cartridge-related components (model dependent)
• Helps restore proper fitment and cleaner operation when the original lower assembly is cracked or broken
• Maintains OEM fit and function when matched to the correct cleaner model

Common Compatibility Notes (Verify Before Ordering)

• Used on many Maytronics Dolphin robotic pool cleaner models
• Common retailer references include models in the DX3 / DX4 / M3 family and other legacy Dolphin variants (fitment varies by model/version)
• Some listings identify this as the complete bottom lid assembly used where the bag attaches
• Always verify your exact cleaner model and existing part number before ordering

Common Included / Assembly Notes

• Often sold as a bottom lid assembly with supports/rails and related lower-lid hardware (exact included pieces may vary by seller listing)
• Some listings describe it as replacing the bottom lid assembly and stainless supports
• Verify whether your installation requires additional filter bag/base components that may be sold separately

Installation Notes

• Disconnect the cleaner from the power supply before servicing.
• Remove the old bottom lid assembly and inspect surrounding parts for wear or damage.
• Transfer any reusable compatible components as needed, following your cleaner’s service instructions.
• Confirm the lid assembly seats properly and opens/closes/functions correctly after installation.
• Test cleaner operation and filter fitment before returning the unit to regular use.

Related Products (Aqua Pool Supply)

• Maytronics 99919116 Bottom Lid Assembly (Search)
• Dolphin DX3 Parts (Search)
• Dolphin DX4 Parts (Search)
• Dolphin Filter Bags (Search)
• Dolphin Robotic Cleaner Parts (Search)

Maintenance Tips

• Rinse the bottom lid area after each cleaning cycle to reduce debris buildup.
• Inspect hinges, supports, and flap areas regularly for cracks or wear.
• Keep filter components clean to reduce strain on the lower assembly.
• Replace damaged lid assemblies promptly to maintain proper debris capture and cleaner performance.