The Ninja BN750 takes the Ninja 7 Fin Pro Extractor Blade Assembly (part 422KKU750ANZ) as its blade; Australian sellers list it from A$14.02 each as of 28 October 2026. Fitment confirmed against the manufacturer's compatibility list.
Your blender
Ninja BN750
Blender
Confirmed against Ninja's listConfirmed against Ninja's own compatibility list
Not yours? Change
Takes the 422KKU750ANZ blade
7 Fin Pro Extractor Blade Assembly · check the code on your old part before ordering.
Your blender
Blender
Confirmed against Ninja's listConfirmed against Ninja's own compatibility list
Takes the 422KKU750ANZ
Blade · check the code on your old part.
Other Ninja blenders that take the 422KKU750ANZ
GenuineGenuine Ninja
$43.99
Ninja Australia · 2 NovLowest genuine · Ninja Australia · checked 2 Nov
CompatibleCompatible option
$14.02 each
2-pack $28.04
Amazon AU · 28 OctAmazon AU · checked 28 Oct
Check sellerCheck seller details
Genuine: made by Ninja. Compatible: another brand.Genuine is made by Ninja. Compatible is made by another brand. Check the seller's page for the size and models it fits.
Lowest compatibleLowest compatible price · $14.02 each · 2-pack $28.04
Amazon AU. Compare with genuine below. Some links earn us a commission. Some seller links earn us a commission, at no extra cost to you.
Compare 3 listings from 2 sellers
AUD, before delivery. Each price shows when it was checked.
Compatible options
2 listings from 1 seller
Opens Amazon AU in a new tab. Their page is the source of truth for price, delivery and returns.
How long it lasts
Replace it when a blade is bent or damaged; Ninja says to check the blade assembly before each use and gives no set interval.
After replacing: No reset: Ninja blenders have no blade reminder.
How to change the blade in your Ninja BN750
Watch the guide or follow the steps.
- 1Unplug the motor base. When the blades stop, turn the cup anticlockwise and lift it off.
- 2Turn the cup upright and unscrew the old blade assembly. Hold it only by the outer edge of its base: the blades are sharp.
- 3Check the new blade assembly for bent or damaged blades before you use it.
- 4Fill the cup no higher than the MAX line, place the blade assembly on top and turn it clockwise to seal.
- 5Turn the cup over, line its tabs up with the slots on the base and turn it clockwise until it clicks.
Every number this part goes by
- Retail name:
- 422KKU750
- Retail name:
- 422KKU750ANZ
Sellers list any of these; they are the same part.
About your Ninja BN750
Ninja blender. Its blade is the 7 Fin Pro Extractor Blade Assembly, part 422KKU750ANZ.
Other blades the maker lists for this blender: Ninja Stacked Pitcher Blade (BL642, BL682, BN750, CT682). Two blades: the Pro Extractor Blade Assembly screws onto the single-serve cups; the Stacked Pitcher Blade sits in the 2.1 L pitcher.
Where the model number is: The model is on the label under the motor base, and on the box. Unplug the blender first.
Common questions
- Which blade fits the Ninja BN750?
- The Ninja BN750 takes the Ninja 7 Fin Pro Extractor Blade Assembly (part 422KKU750ANZ).
- Where can I buy the 422KKU750ANZ in Australia?
- We track 2 Australian sellers for the 422KKU750ANZ; the lowest listed price when we last checked was A$14.02 at Amazon AU. Prices are re-checked daily and dated on this page.
- How do I fit the 422KKU750ANZ in a Ninja BN750?
- No tools, a few minutes: 5 steps, listed on this page with the replacement video where the maker has one.
- What happens if I don't change it?
- Blunt blades blend more slowly and leave chunks.
- Is there anything to reset afterwards?
- No reset: Ninja blenders have no blade reminder.
Something looks wrong with the BN750 match? . Reports go to a person, not a bot.