Fits
REEFER 170, REEFER 170A, REEFER NANO, REEFER XL 200, REEFER 250, REEFER 250 V3, REEFER 250 V3A, REEFER 250 G2, REEFER 350, REEFER 350 V3, REEFER 450, REEFER XL 425, REEFER XL 525
Part no.
42188
Red Sea Return Outlet Angled Nozzle Assembly
The genuine replacement for a cracked, missing or wrong-angle Reefer return nozzle. This is Red Sea's own Sump Pump Return Outlet Nozzle Assembly, part number 42188, letting you aim and shape the return flow across the display exactly as the factory-fitted nozzle did.
Key features
- Genuine Red Sea part — factory nozzle assembly, not a generic aftermarket substitute.
- Angled design — directs return flow across the display for better circulation and surface agitation.
- Push-fit replacement — swaps onto the existing return plumbing without re-plumbing the sump.
Will it fit my tank?
| Fits | Red Sea part number |
|---|---|
| REEFER 170, REEFER 170A, REEFER NANO, REEFER XL 200, REEFER 250, REEFER 250 V3, REEFER 250 V3A, REEFER 250 G2, REEFER 350, REEFER 350 V3, REEFER 450, REEFER XL 425, REEFER XL 525 | 42188 |
This nozzle is sized for the standard REEFER range listed above. It does not fit the REEFER XXL or Peninsula ranges, which use their own larger nozzle assembly, Red Sea part 42319 — check your model before ordering if you're running an XXL or Peninsula system.
Specifications
| Genuine part number | 42188 |
|---|---|
| Component | Sump pump return outlet nozzle assembly |
| Fitting | Push-fit onto existing return plumbing |
| Function | Aims and shapes return flow into the display |
Suitable for, and not suitable for
Suitable as a genuine replacement for a cracked, missing or worn nozzle, or to fine-tune return flow direction on any of the standard REEFER models listed above. Not suitable for the REEFER XXL or Peninsula ranges — order part 42319 for those.
Care and maintenance
Rinse periodically to clear coralline algae or detritus build-up around the nozzle opening, which can otherwise narrow the outlet and reduce surface flow over time.
Warranty and delivery
Covered by Red Sea's manufacturer warranty on parts, in addition to your consumer guarantee rights under Australian Consumer Law. Ships as a small parcel item, standard delivery.
Common questions
How do I know if I need this part?
If the factory nozzle has cracked, gone missing, or you've lost the ability to aim your return flow, this genuine replacement restores both.
Will this fit my REEFER XXL?
No. The REEFER XXL and Peninsula ranges use a larger nozzle assembly, Red Sea part 42319, not this one.
Do I need to drain the sump to fit it?
It's a push-fit onto the existing return plumbing, so a full sump drain generally isn't required — check the water level around the fitting point before you start.


