Willow Go Replacement Parts Set: Which Pieces to Swap and When

Start with the 90-day rule

If you use your Willow Go regularly, the simplest maintenance schedule is to replace your parts every 90 days. That is the interval Willow specifies for optimal output, and it is also the checkpoint to move up if you notice discomfort or signs of wear before the three-month mark.

The Willow Go Replacement Parts Set gives you a complete swap in one box, so you are not hunting for individual pieces when the calendar or your comfort tells you it is time.

What the replacement interval covers

• Willow Go® Replacement Parts Set: For optimal output, replace every 90 days (or when you notice discomfort or signs of wear). This is the manufacturer's own guidance for when to refresh your pump parts, so you can plan replacements instead of reacting to a drop in performance.

  

Which pieces to swap and how to check them

The Willow Go Replacement Parts Set is designed as a full refresh, but not every piece wears at the same rate. Use this checklist when you open a new set or inspect your current parts.

• Flange: Check the flange for cloudiness, cracks, or a loose fit. A worn flange can affect suction and comfort. The replacement set includes a fresh flange so you can restore a secure seal.
• Duckbill valve: Look for tears, stretching, or residue buildup that does not wash away. A damaged duckbill valve can reduce suction. Swap it whenever you replace the set or sooner if you see wear.
• Diaphragm: Inspect the diaphragm for pin holes, stiffness, or milk residue. A worn diaphragm may not seal properly. Replace it with the new one from your set.
• Other parts in the set: The Willow Go Replacement Parts Set contains the pieces you need for a complete replacement. Refer to the set's contents or your pump manual to confirm every part is swapped.

How to replace your Willow Go parts step by step

Set aside a few minutes in a clean workspace. Wash your hands, and have your replacement parts and pump manual nearby.

1. Disassemble the pump: Take apart the pump according to your manual. Keep the pieces together so you do not lose small parts.
2. Remove old parts: Take off the flange, duckbill valve, diaphragm, and any other parts included in your replacement set.
3. Clean and dry the pump body: Wipe down the pump body if needed. Make sure all surfaces are dry before adding new parts.
4. Install new parts: Fit the new flange, duckbill valve, diaphragm, and other pieces from the set. Press them firmly into place so they seal correctly.
5. Test the seal: Reassemble the pump and check that everything fits snugly. A quick test run can help you confirm suction feels normal before you pump for a feed.

When to replace sooner than 90 days

The 90-day interval is a baseline, not a hard limit. Move your replacement date up if you notice discomfort while pumping, a visible change in the parts, or any sign of wear. Discomfort and wear are the two signals Willow names alongside the calendar, so trust them.

If you pump more frequently or sterilize parts often, you may see wear earlier. Keep a spare set on hand so you can swap immediately when something feels off.

Why a spare set belongs in your pump bag

• Willow Go® Replacement Parts Set: Willow Go Replacement Parts Set is available for USD 21.99 (catalog comparison price USD 43.98). Having a complete set ready means you can replace worn parts without waiting for a delivery, which helps you stay on schedule with pumping.

Keep your pump maintenance simple

Mark your calendar for the 90-day replacement, and do a quick visual check of your parts each time you clean them. If you spot wear or feel discomfort, swap in your spare set right away. The Willow Go Replacement Parts Set makes that swap straightforward so you can get back to pumping with confidence.