Fluval Filter Bracket for U4
Fits
Fluval U4
Part no.
A15404
Pack quantity
1 bracket
Genuine part
Genuine Fluval
Mount
Suction cups
Note
U4 only
Fluval Filter Bracket for U4
The genuine mounting bracket that holds a Fluval U4 internal filter flush against the aquarium glass. This is Fluval's Filter Bracket for the U4 Underwater Filter, manufacturer part A15404, a direct replacement for a cracked, lost or brittle original bracket.
Key features
- Genuine Fluval part – A15404, moulded to the exact mounting points on the U4 filter body.
- Suction-cup mount – holds the filter securely against the glass without drilling or adhesive.
- Sized for the U4's larger body – not interchangeable with the smaller U1/U2/U3 bracket.
Specifications
| Manufacturer part number | A15404 |
|---|---|
| Fits | Fluval U4 Underwater Filter (A480, up to 240 L / 65 US Gal) |
| Sold as | Single bracket |
Will it fit my filter?
This bracket fits the Fluval U4 internal filter only. The U1, U2 and U3 use a smaller bracket – see our separate U2/U3 Filter Bracket if that's your model. Check the model printed on the filter housing before ordering.
Suitable for, and not suitable for
- Suitable for: Fluval U4 owners whose original bracket has cracked, gone brittle with UV exposure, or been lost during maintenance.
- Not suitable for: the Fluval U1, U2 or U3, which mount on a smaller bracket.
Goes well with
- Fluval U4 Internal Filter Impeller Assembly – another common wear part for the U4.
- Fluval U4 Internal Filter Motor Unit – worth checking at the same time if the filter has slowed down or gone noisy.
- Fluval U4 Poly/Carbon Cartridge (2) – routine U4 media alongside a bracket replacement.
Warranty and delivery
Covered by Fluval's standard replacement-parts warranty against manufacturing defects, in addition to your rights under Australian Consumer Law. Standard parcel freight – small and lightweight.
Common questions
How do I know if I need this bracket or the U2/U3 version?
Check the model name moulded into the filter body. This bracket fits the U4 only, which is Fluval's largest internal filter, rated to 240 L; the smaller U1–U3 units use a different bracket.
Does the suction cup wear out and need separate replacement?
Suction cups do lose grip over time, especially with sustained UV exposure near bright lighting. This bracket is supplied complete with its mounting cup, so a full replacement resolves both issues at once.
Will this fit a second-hand or older Fluval U4?
Fluval hasn't revised the U4's mounting point since launch, so this bracket fits current and older units alike.
Does it come with mounting screws or hardware?
No separate hardware is needed – the bracket's suction cup is the mounting method, and it clips directly onto the existing points on the filter body.
