The Bosch BCH3PT25AU takes the Bosch motor protective filter 12026520 for Flexxo (inner) as its filter; Australian sellers list it from A$26.51 as of 6 November 2026. Fitment confirmed against the manufacturer's compatibility list.
Your vacuum cleaner
Bosch BCH3PT25AU
Stick vacuum
Confirmed against Bosch's listConfirmed against Bosch's own compatibility list
Not yours? Change
Takes the 12026520 filter
motor protective filter 12026520 for Flexxo (inner) · check the code printed on your old filter before ordering.
Your vacuum cleaner
Stick vacuum
Confirmed against Bosch's listConfirmed against Bosch's own compatibility list
Takes the 12026520
Filter · check the code on your old filter.
Other Bosch vacuum cleaners and their filters and dust bags
The 12026520 fits the BCH3PT25AU only. These Bosch models take a different filter:
GenuineGenuine Bosch
$26.51
Bosch Home Australia · 6 NovLowest genuine · Bosch Home Australia · checked 6 Nov
CompatibleCompatible option
See seller
No compatible seller tracked yetNo compatible seller tracked yet
Genuine: made by Bosch. Compatible: another brand.Genuine is made by Bosch. Compatible is made by another brand. Check the seller's page for the size and models it fits.
Lowest price · $26.51
Bosch Home Australia. 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
- Bosch outer filter 12026519 for FlexxoOpen Bosch Home Australia$13.37
Separate from the filter. Reduces dust.
Compare 1 seller
AUD, before delivery. Each price shows when it was checked.
Opens Bosch Home Australia in a new tab. Their page is the source of truth for price, delivery and returns.
How long it lasts
Replace it when it is damaged or no longer comes clean; clean it when dirty. Bosch gives no interval.
After replacing: No reset.
How to change the filter in your Bosch BCH3PT25AU
Watch the guide or follow the steps.
- 1Switch off and unlock the dust container from the handheld unit.
- 2Lift the filters out of the container: the outer filter, and the inner motor protective filter behind it.
- 3Fit the new filter in the same position, or the rinsed one once fully dry.
- 4Refit the filters, close the container and click it back onto the vacuum.
Every number this part goes by
- Retail name:
- 12026520
Sellers list any of these; they are the same part.
About your Bosch BCH3PT25AU
Bosch vacuum cleaner, stick vacuum — Flexxo Series 4 2-in-1. Its filter is the motor protective filter 12026520 for Flexxo (inner), part 12026520.
Also in this vacuum cleaner: Bosch outer filter 12026519 for Flexxo.
Where the model number is: The rating label is on the underside or the back of the main body; the old part usually has its own code printed on it.
Fits this Bosch model
Bosch1 model
Common questions
- Which filter fits the Bosch BCH3PT25AU?
- The Bosch BCH3PT25AU takes the Bosch motor protective filter 12026520 for Flexxo (inner).
- Where can I buy the 12026520 in Australia?
- We track 1 Australian seller for the 12026520; the lowest listed price when we last checked was A$26.51 at Bosch Home Australia. Prices are re-checked daily and dated on this page.
- How do I fit the 12026520 in a Bosch BCH3PT25AU?
- 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.
- Is there anything to reset afterwards?
- No reset.
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