Fluval 07 Impeller w/Ceramic Shaft/Rubbers 107/207
Water type
Freshwater + Marine
Fits
Fluval 107, Fluval 207
Part no.
A20109
Fluval 07 Impeller w/Ceramic Shaft/Rubbers 107/207
Restores the flow a tired canister quietly lost months ago.
This is the genuine Fluval magnetic impeller assembly, part A20109, for the 107 and 207 canister filters. It is supplied complete with the ceramic shaft and rubber bushings, which is the whole rotating assembly rather than the magnet alone. It is the one 07 impeller that serves two filters — the 307 and the 407 each take their own.
Key features
- Genuine Fluval A20109 — the magnet is matched to the 107 and 207 motor, so the filter starts under load instead of humming and stalling.
- Complete assembly — impeller, ceramic shaft and rubber bushings together. The bushings are the part people forget, and a perished bushing will make a brand-new impeller rattle.
- Fixes the slow fade — worn vanes cost flow gradually, so the tank looks fine until the outlet is barely rippling. Owners usually blame the media.
- One part, two filters — the same assembly covers the 107 and the 207, so a two-tank household stocks one spare.
- Fits during a normal service — the impeller well is already open when you clean the head. No tools.
Specifications
| Manufacturer part number | A20109 |
|---|---|
| Sold as | Single assembly |
| Assembly contents | Magnetic impeller, ceramic shaft, rubber bushings |
| Fits filter model codes | A440 (107), A443 (207) |
| Water type | Freshwater and marine |
| Tools required | None |
Will it fit my filter?
Impellers are the least interchangeable parts in the 07 range. Each canister size runs a different magnet, and A20109 covers the small-body pair only.
| Filter | Model code | Impeller part | Takes A20109 |
|---|---|---|---|
| Fluval 107 | A440 | A20109 | Yes |
| Fluval 207 | A443 | A20109 | Yes |
| Fluval 307 | A446 | A20149 | No |
| Fluval 407 | A449 | A20169 | No |
It is also not the 06 Series part. A 106 or 206 takes the 106/206 impeller assembly, even though the two generations share a canister body and a basket cover. Larger canisters need the 307 impeller or the 407 impeller.
What flow you should be getting back
Fluval publishes two flow figures for each canister. Pump output is measured on an empty canister; filter circulation is the figure with media loaded, and it is the one a healthy filter should be delivering.
| Model | Aquarium capacity | Pump output (empty) | Filter circulation (media loaded) | Max head | Power at 240 V |
|---|---|---|---|---|---|
| 107 | 40–130 L | 550 L/h | 360 L/h | 1.45 m | 10 W |
| 207 | 60–220 L | 780 L/h | 460 L/h | 1.45 m | 10 W |
Max head is the vertical lift at which flow reaches zero, so a canister in a cabinet is already trading some of its 1.45 m before the hoses bend. If a fresh impeller does not bring the outlet back to something like the circulation figure, the restriction is elsewhere — clogged foam, a furred intake strainer, or a hose that has silted up internally.
What's included
- 1 x magnetic impeller
- 1 x ceramic shaft
- Rubber bushings
Not included
- The impeller cover. The plate over the well is separate: A20113 for the 107, A20133 for the 207.
- The motor head gasket. If the head has been weeping, replace the A20038 motor head gasket while you are in there.
- Filter media. Foam and bio media are bought separately.
Suitable for, and not suitable for
Suitable for a 107 or 207 that has become noisy, that stalls and needs a nudge to start, or that has lost flow with clean media. Also the right part for a second-hand filter of unknown service history — an impeller is the cheapest way to reset one.
Not suitable for the 307, 407, any 06 Series canister, or the FX Series. It will not cure air trapped in the head, which sounds similar but clears itself with a tilt and a restart.
Care and maintenance
Pull the impeller at every service and check three things: the vane edges for chips, the magnet body for hairline cracks, and the ceramic shaft for a step worn near either end. A shaft with a visible step is finished even if the impeller looks fine. Clean the well with a soft brush — lime and biofilm in there raise the drag the motor has to overcome. Never run the filter dry to prime it; that is what kills bushings early.
Goes well with
- Ceramic impeller shaft and bushing (A20039) — a cheaper fix when only the shaft has worn
- Motor head gasket O-ring (A20038) — replace whenever the head has been opened repeatedly
- 107/207 media basket cover — stops water bypassing the media
- 07 Series primer assembly — for a canister that will no longer self-prime
Warranty and delivery
Supplied as a genuine Fluval replacement part. Your rights under the Australian Consumer Law apply in full and nothing here limits them. Fluval does not quote a separate warranty term on wear parts. Ships as a standard small parcel anywhere in Australia.
Common questions
Does the Fluval A20109 impeller fit a 307 or 407?
No. A20109 is the 107 and 207 impeller. The 307 uses A20149 and the 407 uses A20169, and each magnet is matched to a different motor.
Will my old Fluval 106 impeller fit the 107?
No. The 06 and 07 canisters share several moulded parts, but the impeller is not one of them. The 106 and 206 have their own assembly.
How often should the impeller be replaced?
Fluval does not publish a fixed interval. Replace on condition: chipped vanes, a cracked magnet, or a ceramic shaft with a worn step. On a hard-working filter that is commonly every year or two.
My filter hums but does not start. Is the impeller the cause?
Usually. A seized or cracked impeller lets the motor energise without turning. Try cleaning the well first; if it still will not start turning by hand freely, the assembly is due.
Do I get the ceramic shaft with it, or is that separate?
The shaft and rubber bushings are included in this assembly. The shaft is also sold on its own as A20039 for when the impeller itself is still good.
