The Husqvarna Aspire T28-P4A takes the Husqvarna spool and line A15B, 3-pack (534 16 21-01) as its spool; Australian sellers list it from A$10.67 each as of 30 October 2026. Fitment confirmed against the manufacturer's compatibility list.
Your line trimmer
Husqvarna Aspire T28-P4A
Line trimmer
Confirmed against Husqvarna's listConfirmed against Husqvarna's own compatibility list
Not yours? Change
Takes the 534 16 21-01 spool
spool and line A15B, 3-pack (534 16 21-01) · check the code on your old part before ordering.
Your line trimmer
Line trimmer
Confirmed against Husqvarna's listConfirmed against Husqvarna's own compatibility list
Takes the 534 16 21-01
Spool · check the code on your old part.
Other Husqvarna line trimmers that take the 534 16 21-01
GenuineGenuine Husqvarna
$10.67 each
3-pack $32.00
Husqvarna Australia · 30 OctLowest genuine · Husqvarna Australia · checked 30 Oct
CompatibleCompatible option
See seller
No compatible seller tracked yetNo compatible seller tracked yet
Genuine: made by Husqvarna. Compatible: another brand.Genuine is made by Husqvarna. Compatible is made by another brand. Check the seller's page for the size and models it fits.
Lowest price · $10.67 each · 3-pack $32.00
Husqvarna 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.
Compare 1 seller
AUD, before delivery. Each price shows when it was checked.
Opens Husqvarna Australia in a new tab. Their page is the source of truth for price, delivery and returns.
How long it lasts
Replace it when the line runs out; the A15B head feeds line automatically until then.
After replacing: No reset needed.
How to change the spool in your Husqvarna Aspire T28-P4A
Watch the guide or follow the steps.
- 1Release the power trigger, switch off with the on/off button and remove the battery.
- 2Press the tabs on the A15B head cover and lift off the cover, then take out the old spool.
- 3Fit a new pre-wound spool and feed each line end out through its eyelet, leaving about 12.5 cm out.
- 4Press the cover back on until it clicks.
- 5Clean the head cover each time you fit new line to prevent vibration.
Every number this part goes by
- Retail name:
- 534 16 21-01
- Retail name:
- 534162101
- Retail name:
- 7392930883741
- Retail name:
- A15B spool
Sellers list any of these; they are the same part.
About your Husqvarna Aspire T28-P4A
Husqvarna line trimmer — Aspire 18V (POWER FOR ALL). Its spool is the spool and line A15B, 3-pack (534 16 21-01), part 534 16 21-01.
Where the model number is: The model is on the rating label on the motor housing or the shaft (Ryobi OLT1832, Ozito PXCLTS-018). Take the battery out or switch off before you turn the head over; the old spool's own code is often moulded on it.
Fits these 2 Husqvarna models
Husqvarna2 models
Common questions
- Which spool fits the Husqvarna Aspire T28-P4A?
- The Husqvarna Aspire T28-P4A takes the Husqvarna spool and line A15B, 3-pack (534 16 21-01).
- Where can I buy the 534 16 21-01 in Australia?
- We track 1 Australian seller for the 534 16 21-01; the lowest listed price when we last checked was A$10.67 at Husqvarna Australia. Prices are re-checked daily and dated on this page.
- How do I fit the 534 16 21-01 in a Husqvarna Aspire T28-P4A?
- 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?
- The trimmer stops cutting when the line runs out, and line of the wrong diameter jams the head or strains the motor.
- Is there anything to reset afterwards?
- No reset needed.
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