The Waterpik Sonic-Fusion Professional takes the Waterpik Sonic-Fusion Brush Head (2-pack) as its brush head; replace it every 3 months; Australian sellers list it from A$15.91 as of 5 October 2026. Fitment confirmed against the manufacturer's compatibility list.
Your electric toothbrush
Waterpik Sonic-Fusion Professional
Electric toothbrush
Confirmed against Waterpik's listConfirmed against Waterpik Australia's compatibility list
Not yours? ChangeSave it · remind me every 3 months
Takes the Sonic-Fusion Brush Head brush head
Sonic-Fusion Brush Head (2-pack) · replace every 3 months · check the code on your old part before ordering.
Your electric toothbrush
Electric toothbrush
Confirmed against Waterpik's listConfirmed against Waterpik Australia's compatibility list
Takes the Sonic-Fusion Brush Head
Brush head · every 3 months · check the code on your old part.
Other Waterpik electric toothbrushes and their brush heads
The Sonic-Fusion Brush Head fits the Sonic-Fusion Professional only. These Waterpik models take a different brush head:
GenuineGenuine Waterpik
$15.91 each
2-pack $31.82
Amazon AU · 5 OctLowest genuine · Amazon AU · checked 5 Oct
CompatibleCompatible option
See seller
No compatible seller tracked yetNo compatible seller tracked yet
Genuine: made by Waterpik. Compatible: another brand. Check certification on the seller's page.Genuine is made by Waterpik. Compatible is made by another brand. Check the seller's certification details before choosing.
Lowest price · $15.91 each · 2-pack $31.82
Amazon AU. Every seller we track is listed below. Some links earn us a commission. Some seller links earn us a commission, at no extra cost to you.
Compare 2 sellers
AUD, before delivery. Each price shows when it was checked.
Genuine Waterpik
2 sellers
Opens Amazon AU in a new tab. Their page is the source of truth for price, delivery and returns.
How long it lasts
Usually every 3 months.
Not due yet?
Get a nudge when your filter is due — it's every 3 months. One email two weeks before, no newsletter. Manage or stop it anytime.
How to change the brush head in your Waterpik Sonic-Fusion Professional
Watch the guide or follow the steps.
- 1Pull the old head straight off the Sonic-Fusion handle.
- 2Push the new head on so the jet opening lines up with the handle's water outlet.
- 3Replace every 3 months.
Every number this part goes by
- Retail name:
- Sonic Fusion Brush Head
- Retail name:
- Sonic-Fusion Brush Head
Sellers list any of these; they are the same part.
About your Waterpik Sonic-Fusion Professional
Waterpik electric toothbrush, electric toothbrush — Sonic-Fusion. Its brush head is the Sonic-Fusion Brush Head (2-pack), part Sonic-Fusion Brush Head, changed every 3 months.
Where the model number is: The range name is printed on the handle; the type number is in small print on the underside of the handle.
Fits these 1 Waterpik model
Waterpik1 model
Common questions
- Which brush head fits the Waterpik Sonic-Fusion Professional?
- The Waterpik Sonic-Fusion Professional takes the Waterpik Sonic-Fusion Brush Head (2-pack) (part Sonic-Fusion Brush Head).
- How often should I replace the brush head in my Waterpik Sonic-Fusion Professional?
- Every 3 months, or sooner if it looks worn.
- Where can I buy the Sonic-Fusion Brush Head in Australia?
- We track 2 Australian sellers for the Sonic-Fusion Brush Head; the lowest listed price when we last checked was A$15.91 at Amazon AU. Prices are re-checked daily and dated on this page.
- How do I fit the Sonic-Fusion Brush Head in a Waterpik Sonic-Fusion Professional?
- No tools, a few minutes: 3 steps, listed on this page with the replacement video where the maker has one.
- What happens if I don't change it?
- Splayed bristles clean less and can hurt gums; the indicator bristles fade to show it is due.
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