The Waterco Opal XL 270 takes the Waterco Opal 180 cartridge element 701038 as its cartridge; Australian sellers list it from A$143.00 as of 28 October 2026. Fitment confirmed against the manufacturer's compatibility list.
Your pool filter
Waterco Opal XL 270
Pool filter
Confirmed against Waterco's listConfirmed against Waterco's own compatibility list
Not yours? Change
Takes the 701038 cartridge
Opal 180 cartridge element 701038 · check the code on your old part before ordering.
Takes one 701038 on top and one 701041 (90 sq ft) below it, joined with joiner 61216.
Your pool filter
Pool filter
Confirmed against Waterco's listConfirmed against Waterco's own compatibility list
Takes the 701038
Cartridge · check the code on your old part.
Takes one 701038 on top and one 701041 (90 sq ft) below it, joined with joiner 61216.
Other Waterco pool filters that take the 701038
GenuineGenuine Waterco
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No genuine seller tracked yetNo genuine seller tracked yet
CompatibleCompatible option
$143.00
Heater and Spa Parts · 28 OctHeater and Spa Parts · checked 28 Oct
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Genuine: made by Waterco. Compatible: another brand.Genuine is made by Waterco. Compatible is made by another brand. Check the seller's page for the size and models it fits.
Lowest compatibleLowest compatible price · $143.00
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This pool filter also takes a lower cartridge
- Waterco Opal 90 sq ft cartridge element 701041Open Heater and Spa Parts$98.00
The lower half of the two-element set, joined to the 701038 with joiner 61216. Separate from the cartridge. Reduces dirt, dust and fine particles in pool water.
Compare 2 sellers
Compare 3 sellers
AUD, before delivery. Each price shows when it was checked.
Compatible options
3 sellers
Opens Heater and Spa Parts in a new tab. Their page is the source of truth for price, delivery and returns.
How long it lasts
Replace it when it has a hole or cleaning no longer works; clean it at 50 kPa above the normal pressure, at least every 12 months.
After replacing: No reset light. Waterco says to clean the cartridge when the gauge reads 50 kPa above the normal operating pressure, and at least every 12 months.
How to change the cartridge in your Waterco Opal XL 270
Watch the guide or follow the steps.
No clear video for this part yet. The steps cover it.
- 1Turn the pump off and close the valves. Open the air bleed screw on the lid to let the pressure out.
- 2Unscrew the lid lock ring and lift the lid off (Opal XL: lift the dome lid by its grip handles).
- 3Lift the cartridge out (Trimline C100 and Opal XL 270: two elements are stacked, with a spacer or joiner between).
- 4Hose the pleats clean, or soak the cartridge overnight in cartridge cleaner. Fit a new one if it has a hole or will not come clean.
- 5Seat the cartridge, check the lid O-ring is in place and screw the lock ring down without over-tightening. Restart and bleed the air.
Every number this part goes by
- Retail name:
- 701038
- Retail name:
- C-9444
Sellers list any of these; they are the same part.
About your Waterco Opal XL 270
Waterco pool filter — Opal XL cartridge filter. Its cartridge is the Opal 180 cartridge element 701038, part 701038.
Also in this pool filter: Waterco Opal 90 sq ft cartridge element 701041. The lower half of the two-element set, joined to the 701038 with joiner 61216.
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 these 2 Waterco models
Waterco2 models
Opal XL 270. Takes one 701038 on top and one 701041 (90 sq ft) below it, joined with joiner 61216.
Common questions
- Which cartridge fits the Waterco Opal XL 270?
- The Waterco Opal XL 270 takes the Waterco Opal 180 cartridge element 701038. Takes one 701038 on top and one 701041 (90 sq ft) below it, joined with joiner 61216.
- Where can I buy the 701038 in Australia?
- We track 3 Australian sellers for the 701038; the lowest listed price when we last checked was A$143.00 at Heater and Spa Parts. Prices are re-checked daily and dated on this page.
- How do I fit the 701038 in a Waterco Opal XL 270?
- 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. Waterco says to clean the cartridge when the gauge reads 50 kPa above the normal operating pressure, and at least every 12 months.
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