Red Sea Reefer/Peninsula Large Return Outlet Nozzle Assembly
Fits
Reefer XXL, Peninsula
Part no.
42319
Red Sea Reefer/Peninsula Large Return Outlet Nozzle Assembly
Restores adjustable factory return flow to a Reefer or Peninsula display.
This is Red Sea's genuine large-bore return outlet nozzle assembly (Red Sea part 42319) for Reefer and Peninsula systems — the adjustable nozzle fitted at the return outlet that directs and shapes flow back into the display. It's the direct factory replacement for a cracked, seized or lost original nozzle, restoring the flow pattern the system was designed around rather than improvising with a generic fitting.
Key features
- Genuine Red Sea part 42319 — direct factory fit, no adapting required.
- Large-format, adjustable — suited to the higher return flows of larger display sizes.
- Restores the designed flow pattern — aim and adjust the return the way Red Sea engineered the system's circulation.
Specifications
| Manufacturer part number | 42319 |
|---|---|
| Fits | Reefer XXL and Peninsula return plumbing |
| Fitting | Direct-fit replacement, no cutting required |
Will it fit my tank?
Confirmed against Reefer XXL and Peninsula systems, matching this listing's own naming. Retailer parts catalogues also list this nozzle against the 300 XL, 425 V3 and 525 V3 — we haven't been able to verify that wider list directly against Red Sea's own documentation, so if your system is one of those three and not an XXL or Peninsula, check the outlet diameter against your old nozzle before ordering, or ask us to confirm from your model number.
What it doesn't fit
This is the large-format nozzle for the higher-flow return outlets on bigger systems. Smaller Reefer models use a different, smaller-bore nozzle — fitting the large nozzle to a small-bore outlet won't seal correctly.
Suitable for, and not suitable for
Suitable for replacing a damaged, cracked or missing return nozzle on a Reefer XXL or Peninsula system. Not suitable for smaller Reefer models, which take a different, smaller nozzle.
Warranty and delivery
Covered by your consumer guarantee rights under Australian Consumer Law. Small parcel item, ships standard.
Common questions
How do I know if I need the large or standard nozzle?
Compare the outlet bore against your original nozzle, or check your model against the fits list above — the large-format nozzle is specifically for Reefer XXL and Peninsula-class return outlets.
What causes these to fail?
UV exposure and age make the plastic brittle over time, and the adjustable ball joint can shear if knocked during aquascaping or maintenance.
Does it come with mounting hardware?
It's a direct-fit assembly for the existing return outlet — no separate mounting hardware is needed.
Can I use it on a non-Red Sea sump?
It's sized to Red Sea's own return outlet fittings; on a different brand's plumbing it may not seal without an adapter.
