Filter details

Replacement for WD-G3-N3CB

Check the fit, understand the replacement, and see the sources behind it.

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Replacement details

Filter identified

Original manufacturer option

Waterdrop CB replacement cartridge

Filter WD-G3-N3CB

Your search matches the manufacturer’s listed filter identifier.

1100 gallonsManufacturer-rated capacity
12 monthsManufacturer’s suggested replacement timing
Why this filter

Before you buy

One maintenance cartridge, not all the filters in your system. Use the label and system reminder to identify the stage you need.

How this compares

This is a checked replacement, not a Best Overall or Best Value winner yet. Before choosing a winner, we need other filters we can trust, a fair comparison of how they work and how reliable they are, and current prices including shipping.

Filtration tests and details

These records explain which filter results we have checked and what their limits are. The same certification name does not mean two filters work equally well.

What we have verified about filtration

We have not yet verified the exact model's health-related contaminant reductions against a current independent certification listing. Manufacturer claims alone do not establish that this filters better than another option.

View sources

These sources explain the fit, features and filter test results described above. They are not retailer price checks.

WaterdropWaterdrop CB replacement cartridge identity and stage fitChecked Oct 9, 2026Opens in a new tab.WaterdropG3P600 manual: stage-specific replacement, reset and flushChecked Oct 9, 2026Opens in a new tab.WaterdropG3P800 manual: separate CF, CB and RO replacement instructionsChecked Oct 9, 2026Opens in a new tab.
Installation and care

Installing the replacement

For G3P600 only: close the faucet and wait 30 seconds before removal. Remove the new cartridge’s wrap and cap; match the CB position and twist clockwise into place. Hold the CB indicator for seven seconds to reset it, then open the faucet for a 15-minute flush. Use your own manual for G3P800 or another system.

For G3P800 only: close the faucet and wait 30 seconds before removal. Twist the old CB cartridge counterclockwise to remove it and fit the new CB cartridge clockwise. Hold the CB indicator for seven seconds until the system beeps, then open the faucet for a 15-minute flush. Keep a towel ready, follow the full G3P800 manual and check for leaks.

Where to buy

No verified offer available

We haven’t confirmed a current price and availability for this filter. Shopping comparisons are not available yet.