Cat Fountain Pump Replacement: When and How
By Real Pet Store | Published: 2026-10-21
Category: Product Reviews
Learn when to replace your cat fountain pump and how to do it step by step. Includes tips for Catit LED and Pixi fountain pumps.
Quick answer
Replace your cat fountain pump every 6–12 months or when flow weakens, noise increases, or cleaning no longer restores performance.
Why pump replacement matters
A sluggish or noisy pump means your cat may drink less, which can lead to dehydration. Regular replacement keeps water circulating and filtered, encouraging your cat to stay hydrated.
Cat fountain pumps are not universal. Always match the pump model to your fountain brand and series. Using the wrong pump can cause leaks, poor flow, or damage to the fountain.
Signs it’s time to replace
If the pump runs but water trickles instead of flows, or if it makes a grinding or rattling sound, replacement is due. Another clear sign: the pump stops working entirely after cleaning and checking the power adapter.
Some pumps, like the Catit Replacement Pump for LED Flower Fountains 50038, work only with specific models and require a separate USB adapter (sold separately). Always verify compatibility before buying.
Step-by-step replacement guide
- Unplug and disassemble: Turn off and unplug the fountain. Remove the top, water reservoir, and any filter covers to access the pump chamber. Common mistake: forgetting to unplug first can cause electrical shock or pump damage.
- Remove the old pump: Lift the pump out of its housing. Disconnect any tubing or attachments. Note the orientation and tubing connections for reinstallation. Check if the old pump has a removable pre-filter sponge; if so, clean or replace it separately.
- Prepare the new pump: If using a Catit pump, attach the included tubing and pre-filter sponge (if supplied). Do not connect the USB adapter yet. Common mistake: installing the pump without the pre-filter sponge can allow debris to clog the impeller quickly.
- Install the new pump: Place the new pump into the chamber in the same orientation as the old one. Reattach any tubing and replace the filter covers and water reservoir. Make sure the pump sits flat and the tubing is not kinked — kinks reduce water flow.
- Connect power and test: Plug the USB adapter into the pump cord, then into a wall outlet. Fill the fountain with water and turn it on. Check for steady flow and quiet operation. If the pump does not run, verify the USB adapter is compatible (Catit pumps require #50043 adapter) and that the outlet is working.
- Run a cleaning cycle: Let the fountain run for 5–10 minutes, then discard the first batch of water. This flushes out any manufacturing residue from the new pump. Common mistake: skipping this step can leave a slight plastic taste that may discourage your cat from drinking.
Product facts
- Catit Replacement Pump for LED Flower Fountains 50038: Replacement pump for use with Catit LED Flower Fountains; requires USB adapter #50043 (sold separately). If you own a Catit LED Flower Fountain, this is the correct replacement, but you must have or buy the separate USB adapter to power it.
Catit Replacement Pump for LED Flower Fountains 50038 - Catit Pixi Fountain Replacement Pump 44833: Replacement pump for Catit Pixi Fountains (not SMART fountain); requires a separate USB adapter. Owners of Catit Pixi fountains (white, pink, blue, green, or stainless steel) need this specific pump, and should note it does not include the USB adapter.
Catit Pixi Fountain Replacement Pump 44833
