The Waterco Trimline C50 takes the Waterco Trimline C50 / C100 cartridge element 62042 as its cartridge; Australian sellers list it from A$58.00 as of 7 November 2026. This fit is not yet confirmed against the manufacturer's list.
Your pool filter
Waterco Trimline C50
Pool filter
Not confirmed by Waterco — check your old partNot yet confirmed by Waterco's own list — check the code on your old part
Not yours? Change
Takes the 62042 cartridge
Trimline C50 / C100 cartridge element 62042 · check the code on your old part before ordering.
Your pool filter
Pool filter
Not confirmed by Waterco — check your old partNot yet confirmed by Waterco's own list — check the code on your old part
Takes the 62042
Cartridge · check the code on your old part.
Other Waterco pool filters that take the 62042
GenuineGenuine Waterco
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No genuine seller tracked yetNo genuine seller tracked yet
CompatibleCompatible option
$58.00
Heater and Spa Parts · 7 NovHeater and Spa Parts · checked 7 Nov
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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 · $58.00
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Compare 4 listings from 3 sellers
AUD, before delivery. Each price shows when it was checked.
Compatible options
4 listings from 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 Trimline C50
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:
- 62042
Sellers list any of these; they are the same part.
About your Waterco Trimline C50
Waterco pool filter — Trimline cartridge filter (earlier C series). Its cartridge is the Trimline C50 / C100 cartridge element 62042, part 62042.
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
Trimline C100. This filter takes 2, stacked with spacer 62078.
Common questions
- Which cartridge fits the Waterco Trimline C50?
- The Waterco Trimline C50 takes the Waterco Trimline C50 / C100 cartridge element 62042.
- Where can I buy the 62042 in Australia?
- We track 3 Australian sellers for the 62042; the lowest listed price when we last checked was A$58.00 at Heater and Spa Parts. Prices are re-checked daily and dated on this page.
- How do I fit the 62042 in a Waterco Trimline C50?
- 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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