The Bosch BCS1051BAU takes the Bosch filter module 12049774 for Unlimited 10 as its filter; Australian sellers list it from A$65.64 as of 26 October 2026. Fitment confirmed against the manufacturer's compatibility list.
Your vacuum cleaner
Bosch BCS1051BAU
Stick vacuum
Confirmed against Bosch's listConfirmed against Bosch's own compatibility list
Not yours? Change
Takes the 12049774 filter
filter module 12049774 for Unlimited 10 · 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 12049774
Filter · check the code on your old filter.
Other Bosch vacuum cleaners and their filters and dust bags
The 12049774 fits the BCS1051BAU only. These Bosch models take a different filter:
GenuineGenuine Bosch
$65.64
Bosch Home Australia · 26 OctLowest genuine · Bosch Home Australia · checked 26 Oct
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 · $65.64
Bosch Home Australia. Out of stock when we checked. 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.
Other parts this vacuum cleaner takes
- Bosch Power for ALL 18V 5.0Ah battery (BHZUB1850 / 17006570)Open Bosch Home Australia$226.81
The battery. Separate from the filter.
- Bosch Power for ALL 18V 3.0Ah battery (BHZUB1830 / 17006127)Open Bosch Home Australia$189.00
The battery. Another Bosch Power for ALL 18V pack Bosch lists for this model; same slide-in fitting, different run time. Separate from the filter. Out of stock when we checked.
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 BCS1051BAU
Watch the guide or follow the steps.
- 1Switch off and take the dust container off the vacuum.
- 2Lift out the filter module (cartridge and fluff filter).
- 3Fit the new module, or tap the old one out and wipe the fluff filter with a slightly damp cloth. Never rinse the filters.
- 4Refit the module and click the container back on.
Every number this part goes by
- Retail name:
- 12049774
Sellers list any of these; they are the same part.
About your Bosch BCS1051BAU
Bosch vacuum cleaner, stick vacuum — Unlimited 10. Its filter is the filter module 12049774 for Unlimited 10, part 12049774.
Also in this vacuum cleaner:
- Bosch Power for ALL 18V 5.0Ah battery (BHZUB1850 / 17006570).
- Bosch Power for ALL 18V 3.0Ah battery (BHZUB1830 / 17006127). Another Bosch Power for ALL 18V pack Bosch lists for this model; same slide-in fitting, different run time.
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 BCS1051BAU?
- The Bosch BCS1051BAU takes the Bosch filter module 12049774 for Unlimited 10.
- Where can I buy the 12049774 in Australia?
- We track 1 Australian seller for the 12049774; the lowest listed price when we last checked was A$65.64 at Bosch Home Australia. Prices are re-checked daily and dated on this page.
- How do I fit the 12049774 in a Bosch BCS1051BAU?
- 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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