The Shark AZ3900 takes the Shark Filters Post Motor Filter and Cover (XHFAZ3900UKT) as its filter; replace it every 12 months; Australian sellers list it from A$39.99 as of 22 October 2026. Fitment confirmed against the manufacturer's compatibility list.
Your vacuum cleaner
Shark AZ3900
Stick vacuum
Confirmed against Shark's listConfirmed against Shark Australia's compatibility list
Not yours? ChangeSave it · remind me every 12 months
Takes the XHFAZ3900UKT filter
Filters Post Motor Filter and Cover (XHFAZ3900UKT) · replace every 12 months · check the code printed on your old filter before ordering.
Your vacuum cleaner
Stick vacuum
Confirmed against Shark's listConfirmed against Shark Australia's compatibility list
Takes the XHFAZ3900UKT
Filter · every 12 months · check the code on your old filter.
Other Shark vacuum cleaners and their filters and dust bags
The XHFAZ3900UKT fits the AZ3900 only. These Shark models take a different filter:
GenuineGenuine Shark
$39.99
Shark Au · 22 OctLowest genuine · Shark Au · checked 22 Oct
CompatibleCompatible option
See seller
No compatible seller tracked yetNo compatible seller tracked yet
Genuine: made by Shark. Compatible: another brand. Check certification on the seller's page.Genuine is made by Shark. Compatible is made by another brand. Check the seller's certification details before choosing.
Lowest price · $39.99
Shark 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.
This vacuum cleaner also takes a pre-filter
- Shark Filters Pre Motor Foam and Filter (XFFKAZ3900UKT)Open Shark Au$29.99
Separate from the filter. Replace every 12 months.
Compare 1 seller
AUD, before delivery. Each price shows when it was checked.
Opens Shark Au in a new tab. Their page is the source of truth for price, delivery and returns.
How long it lasts
Usually every 12 months.
After replacing: Shark: rinse filters in water only (no soap), squeeze out and air-dry for at least 24 hours before refitting; a damp filter can damage the motor. No reset.
Flow slows and taste drops off as the filter fills up. Changing on time is the whole point.
Not due yet?
Get a nudge when your filter is due — it's every 12 months. One email two weeks before, no newsletter. Manage or stop it anytime.
How to change the filter in your Shark AZ3900
Watch the guide or follow the steps.
- 1Unplug the vacuum and lift the dust cup off.
- 2Unclip the filter grille low on the front of the base and lift it off.
- 3Pull the old HEPA filter out, push the new one in and refit the grille until it clicks.
- 4Rinse the HEPA filter yearly and let it dry 24 hours before refitting.
Every number this part goes by
- Retail name:
- XHFAZ3900
- Retail name:
- XHFAZ3900UKT
Sellers list any of these; they are the same part.
About your Shark AZ3900
Shark vacuum cleaner, stick vacuum — PowerDetect. Its filter is the Filters Post Motor Filter and Cover (XHFAZ3900UKT), part XHFAZ3900UKT, changed every 12 months.
Also in this vacuum cleaner: Shark Filters Pre Motor Foam and Filter (XFFKAZ3900UKT) (every 12 months).
Where the model number is: The rating label is on the underside or the back of the main body; the bag or filter type is usually printed on the old part.
Fits these 1 Shark model
Shark1 model
Common questions
- Which filter fits the Shark AZ3900?
- The Shark AZ3900 takes the Shark Filters Post Motor Filter and Cover (XHFAZ3900UKT) (part XHFAZ3900UKT). Compatible filters made to the same specification also fit.
- How often should I replace the filter in my Shark AZ3900?
- Every 12 months. Flow slows and performance drops off as the filter fills up, so it's worth doing on time.
- Where can I buy the XHFAZ3900UKT in Australia?
- We track 1 Australian seller for the XHFAZ3900UKT; the lowest listed price when we last checked was A$39.99 at Shark Au. Prices are re-checked daily and dated on this page.
- How do I fit the XHFAZ3900UKT in a Shark AZ3900?
- No tools, a few minutes: 4 steps, listed on this page with the replacement video where the maker has one.
- What happens if I don't change it?
- Suction drops and the vacuum may cut out on a blocked filter, and a full bag loses suction well before it looks full.
- How do I reset the reminder?
- Shark: rinse filters in water only (no soap), squeeze out and air-dry for at least 24 hours before refitting; a damp filter can damage the motor. No reset.
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