Description
Astralpool impeller plug M10 left 4405011441
The Astralpool impeller plug M10 left 4405011441 is the original left hand threaded plug that secures the impeller on the motor shaft of
selected Astralpool pool pumps. This small but essential part locks the impeller firmly in place, ensuring reliable power transmission
from the motor to the hydraulic body in daily filtration use.
Function of the Astralpool impeller plug
Mounted directly on the threaded end of the motor shaft, the impeller plug M10 left 4405011441 clamps the impeller against the shaft
shoulder or key. Its left hand thread is designed to tighten naturally in the normal direction of pump rotation, reducing the risk of the
impeller loosening during start up or operation.
- Secures the impeller on the shaft to transmit motor torque.
- Uses an M10 left hand thread adapted to compatible Astralpool pumps.
- Helps maintain correct impeller position and internal clearances.
Design and construction
The Astralpool impeller plug M10 left 4405011441 is machined to match the original shaft thread and impeller design of the targeted pump
models. The head profile allows safe tightening and loosening with the appropriate tool, while the contact face is sized to bear
correctly on the impeller hub without damaging the plastic.
- Metal construction suitable for humid technical room environments.
- Precisely cut M10 left hand thread for accurate engagement on the shaft.
- Flat bearing surface to distribute clamping pressure on the impeller hub.
Compatibility and typical applications
This plug is intended for Astralpool circulation pumps that list reference 4405011441 in their exploded view or spare parts list. It is
particularly relevant when overhauling the wet end of pumps in the small and medium residential range, where the impeller must be
removed for seal replacement or internal inspection.
- Suitable for Astralpool pool pumps that specify impeller plug 4405011441.
- Ideal for use when rebuilding the hydraulic section or replacing the motor.
- Recommended as a preventive spare in service kits from PoolParthub.com.
When to replace the impeller plug M10 left
Although compact, the plug is subjected to repeated tightening and loosening during maintenance and to torsional loads in operation. Over
time, threads and head surfaces can deteriorate, which makes it harder to achieve safe clamping or to remove the plug without risk.
- Rounded or damaged head where the tool can no longer grip securely.
- Worn, stripped or corroded threads that do not run smoothly on the shaft.
- Visible deformation or burrs on the bearing face that could damage the impeller.
- Loss of tightening torque or signs that the impeller is moving on the shaft.
Installation recommendations
Fitting the Astralpool impeller plug M10 left 4405011441 is normally done when the pump is already open for service. Correct assembly
helps protect both the impeller and the motor shaft and ensures the hydraulic part operates as designed.
- Switch off the power supply and isolate the pump before any disassembly.
- Hold the motor shaft using the dedicated flat or rear access point to avoid twisting the impeller.
- Screw the plug onto the M10 left hand thread by hand first to avoid cross threading.
- Tighten with the appropriate tool to the manufacturer’s recommended torque, without over tightening.
- After reassembly, check that the impeller turns freely by hand before restarting filtration.
Once the pump is back in service, observe start up and initial operation to confirm that there are no unusual noises or vibrations that
might indicate incorrect assembly.
Good practice for long term reliability
With the Astralpool impeller plug M10 left 4405011441 correctly installed, a few basic habits help maintain secure clamping and smooth
operation over many seasons.
- Use only the correct tool size on the plug head to avoid rounding.
- Avoid impact tools; apply steady torque instead of shocks when tightening or loosening.
- Inspect the plug threads and shaft threads during every major service.
- Replace the plug whenever visible damage or thread wear is detected.
A sound impeller plug is essential for reliable power transmission inside the pump, and using the original Astralpool impeller plug M10
left 4405011441 helps keep compatible pool pumps operating safely and efficiently in everyday filtration.
