Fluval FX5 Giant Lid Fastener 1
Fits
Fluval FX5
Part no.
A20214
Fluval FX5 Giant Lid Fastener 1
The genuine oversized clamp for the Fluval FX5's lid – it does not fit the FX4 or FX6. The FX5 used a larger giant lid fastener than the standard FX4/FX6 clamp, so if your FX5's lid won't seal, this is the specific replacement to order rather than the standard A20215 fastener.
Key features
- Genuine Fluval part (A20214) – the correct oversized clamp for the FX5, not a substitute part.
- Clips directly onto the FX5 rim – no tools needed to fit.
- Restores a tight, airtight lid seal, which is what keeps the canister self-priming.
- Sold individually, so you can replace only the fasteners that have failed.
Will it fit my FX filter?
This is the FX5-specific "giant" lid fastener. It fits the Fluval FX5 only – it does not fit the FX4 or FX6, which use the smaller standard fastener (A20215). Check your filter model before ordering; the two clamps are not interchangeable.
Specifications
| Manufacturer part number | A20214 |
|---|---|
| Fits | Fluval FX5 only |
| Does not fit | Fluval FX4, FX6 |
| Pack quantity | 1 fastener |
| Barcode | 015561302142 |
Suitable for, and not suitable for
Suitable as a genuine replacement rim clamp for the Fluval FX5. Not suitable for the FX4 or FX6 – fitting the wrong clamp will not seal the lid. If you're unsure which filter you have, check the model name printed on the canister body before ordering.
Care and maintenance
Check all lid fasteners at each service. A single loose or cracked fastener is enough to let air in and stop the filter self-priming, even if the rest are sound.
Goes well with
- Fluval FX4/FX5/FX6 Lid Fastener – the standard clamp used on the FX4 and FX6, worth confirming against before you order if you're not certain which your FX5 needs.
- Fluval FX4/FX5/FX6 Filter Lid O-ring – the seal these fasteners clamp against.
- Fluval FX4/FX5/FX6 Rim Connector & Clips 3 – related rim hardware on the giant rim.
Warranty and delivery
New, genuine Fluval part, covered by your rights under Australian Consumer Law in addition to any manufacturer terms. Small parcel item – no special freight handling applies.
Common questions
How do I know if my FX5 needs this or the standard fastener?
The FX5 uses the giant fastener (A20214) shown here. The standard fastener (A20215) is for the FX4 and FX6. If you're not sure, compare the size of your existing clamp, or check the model printed on the unit.
Does this fit the FX6?
No. The FX6 uses the smaller standard lid fastener, not this part.
How many do I need?
Order one for each fastener that has cracked, stretched or stopped clamping tight – most FX canisters use eight around the rim.
