Maytronics - Dolphin EasyKleen filter screen screw KA40×12 - 3379450

Maytronics Dolphin EasyKleen filter screen screw KA40×12

This is the genuine Maytronics KA40×12 self-tapping screw that secures the filter screen assembly on the Dolphin EasyKleen robotic pool cleaner. It is a hardware fastener — small but structurally critical — that holds the filter screen carrier in correct alignment throughout every cleaning cycle.

What this screw does in the Dolphin

The KA40×12 secures the filter screen assembly to the cleaner’s body, keeping the filtration components firmly located and preventing any shift under water pressure. A missing or stripped screw allows the screen to move, which disrupts water flow through the filter and can cause debris bypass. Replace it before the thread damage spreads to the housing boss.

Which Dolphin models it fits

This screw is confirmed for the Dolphin EasyKleen as the parent product. The same KA40×12 fastener is also used across a broad range of other Dolphin platforms — including the DX3, DX4, C3, C5, C7, Wave 50M, Wave 300, Active 40/60, H50, Neptune, Neptune Plus, M600, Apollo, S400, and Sigma series — making it one of Maytronics’ most widely shared hardware specs. Confirm your model before ordering if you are fitting it to a unit other than the EasyKleen.

Signs it needs replacing

If the filter screen rattles during operation, lifts at one corner, or you find the screw missing entirely on inspection, replace it immediately. A stripped thread — where the screw turns freely without biting — means the boss in the housing has also been compromised; address that before re-fitting. Do not run the robot without this fastener in place.

How to install it

Remove the filter screen assembly using a Phillips or Pozidriv screwdriver. Thread the KA40×12 in by hand first to avoid cross-threading, then drive it to snug — do not overtighten, as the housing is moulded plastic. The job takes under five minutes with no special tooling.