The Hayward C100S takes the Hayward SwimClear C100S cartridge element CX100XRE as its cartridge; Australian sellers list it from A$128.00 as of 28 October 2026. Fitment confirmed against the manufacturer's compatibility list.
Your pool filter
Hayward C100S
Pool filter
Confirmed against Hayward's listConfirmed against Hayward's own compatibility list
Not yours? Change
Takes the CX100XRE cartridge
SwimClear C100S cartridge element CX100XRE · 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 CX100XRE
Cartridge · check the code on your old part.
Other Hayward pool filters and their cartridges
The CX100XRE fits the C100S only. These Hayward models take a different cartridge:
GenuineGenuine Hayward
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No genuine seller tracked yetNo genuine seller tracked yet
CompatibleCompatible option
$128.00
Heater and Spa Parts · 28 OctHeater and Spa Parts · checked 28 Oct
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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 · $128.00
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AUD, before delivery. Each price shows when it was checked.
Compatible options
3 sellers
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How long it lasts
Replace it when cleaning no longer brings the pressure down; clean it when the pressure rises 0.5–0.7 bar (7–10 psi) above the starting pressure.
After replacing: No reset light. Hayward says to clean or replace the cartridge when the gauge rises 7–10 psi (0.5–0.7 bar) above the starting pressure.
How to change the cartridge in your Hayward C100S
Watch the guide or follow the steps.
- 1Shut off the pump. If the filter is below water level, close the valves.
- 2Take out the drain plug and open the manual air relief valve to drain the filter.
- 3Press the safety latch and unscrew the lock ring anticlockwise. Lift off the filter head with the ring.
- 4Lift the cartridge out. Hose it inside and out (do not pressure wash), or fit a new one.
- 5Sit the cartridge evenly on the hub in the base, refit the head with its O-ring and tighten the lock ring until the safety latch engages.
Every number this part goes by
- Retail name:
- C-9440
- Retail name:
- CX100XRE
Sellers list any of these; they are the same part.
About your Hayward C100S
Hayward pool filter — SwimClear single-element cartridge filter. Its cartridge is the SwimClear C100S cartridge element CX100XRE, part CX100XRE.
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 C100S?
- The Hayward C100S takes the Hayward SwimClear C100S cartridge element CX100XRE.
- Where can I buy the CX100XRE in Australia?
- We track 3 Australian sellers for the CX100XRE; the lowest listed price when we last checked was A$128.00 at Heater and Spa Parts. Prices are re-checked daily and dated on this page.
- How do I fit the CX100XRE in a Hayward C100S?
- 5 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 says to clean or replace the cartridge when the gauge rises 7–10 psi (0.5–0.7 bar) above the starting pressure.
Something looks wrong with the C100S match? . Reports go to a person, not a bot.