The Hayward C900 takes the Hayward Star-Clear Plus C900 cartridge element CX900RE as its cartridge; Australian sellers list it from A$118.00 as of 28 October 2026. Fitment confirmed against the manufacturer's compatibility list.
Your pool filter
Hayward C900
Pool filter
Confirmed against Hayward's listConfirmed against Hayward's own compatibility list
Not yours? Change
Takes the CX900RE cartridge
Star-Clear Plus C900 cartridge element CX900RE · check the code on your old part before ordering.
Your pool filter
Pool filter
Confirmed against Hayward's listConfirmed against Hayward's own compatibility list
Takes the CX900RE
Cartridge · check the code on your old part.
Other Hayward pool filters and their cartridges
The CX900RE fits the C900 only. These Hayward models take a different cartridge:
GenuineGenuine Hayward
See seller
No genuine seller tracked yetNo genuine seller tracked yet
CompatibleCompatible option
$118.00
Heater and Spa Parts · 28 OctHeater and Spa Parts · checked 28 Oct
Check sellerCheck seller details
Genuine: made by Hayward. Compatible: another brand.Genuine is made by Hayward. Compatible is made by another brand. Check the seller's page for the size and models it fits.
Lowest compatibleLowest compatible price · $118.00
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AUD, before delivery. Each price shows when it was checked.
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How long it lasts
Replace it when cleaning no longer brings the pressure back down; Hayward gives no Star-Clear cleaning pressure.
After replacing: No reset light. Hayward publishes no cleaning pressure for the Star-Clear; its SwimClear filters are cleaned when the gauge rises 7–10 psi (50–70 kPa) above the starting pressure.
How to change the cartridge in your Hayward C900
Watch the guide or follow the steps.
No clear video for this part yet. The steps cover it.
- 1Turn the pump off, close the valves and open the air relief valve.
- 2Spin off the locking knob and lift off the filter cover.
- 3Lift the cartridge out and hose it off, or fit a new one.
- 4Refit the cartridge, the cover and the locking knob, then restart and bleed the air.
Every number this part goes by
- Retail name:
- C-8409
- Retail name:
- CX900RE
Sellers list any of these; they are the same part.
About your Hayward C900
Hayward pool filter — Star-Clear Plus cartridge filter. Its cartridge is the Star-Clear Plus C900 cartridge element CX900RE, part CX900RE.
Where the model number is: The model is on the label on the filter tank or under the lid (Zodiac CS150, Hayward C150S). On an above-ground pump it is on the pump's label or the box (Intex model 604 or item 28604, Bestway 58383); on an inflatable spa, on the box or the pump unit's label (Lay-Z-Spa Miami, Intex SB-H20). If the label has worn off, measure the old cartridge's length and diameter.
Fits this Hayward model
Hayward1 model
Common questions
- Which cartridge fits the Hayward C900?
- The Hayward C900 takes the Hayward Star-Clear Plus C900 cartridge element CX900RE.
- Where can I buy the CX900RE in Australia?
- We track 1 Australian seller for the CX900RE; the lowest listed price when we last checked was A$118.00 at Heater and Spa Parts. Prices are re-checked daily and dated on this page.
- How do I fit the CX900RE in a Hayward C900?
- 4 steps, listed on this page with the replacement video where the maker has one.
- What happens if I don't change it?
- A clogged cartridge slows the flow and the pump works harder, and a torn one lets dirt back into the water, so the pool or spa clouds.
- Is there anything to reset afterwards?
- No reset light. Hayward publishes no cleaning pressure for the Star-Clear; its SwimClear filters are cleaned when the gauge rises 7–10 psi (50–70 kPa) above the starting pressure.
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