Astralpool / Zodiac Joiner ZX 310 Element Coupler 78078

Astralpool ZX 310 / Zodiac ZXC 310 Cartridge Element Coupler (Joiner) - 78078

Genuine Astralpool element coupler, part number 78078. It joins the two cartridge elements end-to-end inside the twin-element ZX 310 filter. This is a ZX 310 only part - the single-element ZX filters (50 to 250) do not use a coupler.

• Physically Stocked, unlike most "drop-shipping" websites.
• Shipped from VIC, NSW, WA, QLD

The ZX 310 is the same twin-element filter whether it is badged Astralpool ZX 310, Hurlcon ZX 310 or Zodiac ZXC 310. The Zodiac ZXC is simply the Zodiac-badged Astralpool ZX.

ZX 310 Only - Check Before Ordering

This part fits one filter: the twin-element ZX 310 (Zodiac ZXC 310). Open your filter - if you find two elements stacked end-to-end, the coupler sits between them and this is your part. If your filter has a single element, it does not take a coupler and this is not the right part.

Goes With

• ZX310 cartridge elements - 78088 (supplied as a pair)
• ZX310 tank body - 7821702
• ZX / ZXC lid assembly - SP7820502

Will Not Fit

• ZX50 to ZX250 (single element) - these run one element with no coupler.
• Astralpool XC - a separate, unrelated filter series. Contact us with your model and a photo.

Part Numbers & Search References

78078 · SP78078 · Joiner ZX 310 Element Coupler · ZX310 element joiner · Zodiac ZXC310 cartridge coupler · Hurlcon ZX310 element connector · twin cartridge filter joiner.

Frequently Asked Questions

Which filter uses this coupler?
Only the twin-element ZX 310 (Zodiac ZXC 310), which runs two 78088 elements joined by this part.

My ZX filter has a single element. Do I need this?
No. The single-element ZX filters (50 to 250) do not use a coupler.

My filter is a Zodiac ZXC 310. Is this the right coupler?
Yes. The Zodiac ZXC 310 is the same filter as the Astralpool ZX 310, just Zodiac-badged, so this coupler fits.

My filter is an Astralpool XC. Is this the right part?
No. The XC is a separate, unrelated filter series. Contact us with your model and a photo and we will match the correct part.

Manufacturer Catalogues, Diagrams & Part Numbers

Need exploded views, spare part numbers, product numbers, diagrams, or more product information? See the manufacturer catalogues: Astralpool Catalogue 2026 | Zodiac Catalogue 2026

As with all products, these must be diagnosed and fitted by a qualified and experienced person. This is a special-order item.