Quick answer

Replacing the Dyson DC50 pre-motor filter is a DIY job of about 10 minutes. Compatible pre-motor filters currently start at $8.68. Replace it Every 3 months under normal use. Full step-by-step below.

The DC50 pre-motor filter is washable foam-and-fleece and lifts out from the top. Replace it only when rinsing no longer restores it — grey after washing, torn, or gone limp. A tired pre-filter shows as weaker suction and dust on the exhaust.

Compatible Pre-Motor Filter for the Dyson DC50

Prices pulled from Amazon and verified September 2026. “OEM” is a genuine Dyson part; the rest are tested aftermarket options.

PartTypePriceRating
3Pack Pre Filters Replacement for Dyson - Vacuum Filter Compatible with Dyson V6 V7 V8 DC59 DC58 Replaces Part 965661 01 (3 Pack) Aftermarket $9.99
$3.33/ea
4.85★ (3,842) Buy on Amazon
Fette Filter- HEPA Post-Motor Filter & Pre-Motor Filter Compatible with Dyson DC50. Compatible with Dyson Animal and Multi Floor. Compare to Part # 965081-01 & 965080-02 - Combo Pack Aftermarket $13.99 4.85★ (2,332) Buy on Amazon
ZXZHL Replacement Washable Pre Motor Filter for Dyson DC05, DC08, DC14, DC15 Vacuum Cleaner Motor, Replaces Part 905401-01 & 901420-02 Aftermarket $8.68 4.8★ (1,778) Buy on Amazon
Filter Replacement for Dyson DC41 DC65 DC66 UP13 UP20 UP30 Hepa Post-Motor Filter & Pre-Motor Filter, Multi Floor, Animal and Ball Vacuums Ball Animal 2 Ball Animal 3. Part#920769-01 & 920640-01 Aftermarket $13.99
$7.00/ea
4.95★ (145) Buy on Amazon
Goodsby 6 Pack Replacement Kit Pre & Post Motor HEPA Filter for Dyson DC50 Animal Multi Floor Complete Vacuum Cleaner Part # 965081-01, 965080-01 Aftermarket $27.95
$4.66/ea
3.95★ (0) Buy on Amazon
DC50 Filter Replacement Compatible with Dyson DC50 Animal & Multi Floor Exclusive Vacuum, 1 Pre-Filter & 1 Post-Motor Filter Washable, Compare to Part #965080-01 & 965081-01 Aftermarket $14.99 4.65★ (0) Buy on Amazon

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About the Dyson DC50

The Dyson DC50 is a compact corded Ball upright. Its pre-motor filter is the washable purple unit at the top of the machine — the filter that guards the motor and needs the most frequent attention on this model.

Step-by-Step: Replacing the Dyson DC50 Pre-Motor Filter

1
Power off and unplug
Disconnect the DC50 before opening the filter lid.
2
Open the filter lid
Lift the lid on top of the machine to reveal the purple pre-motor filter.
3
Remove the old filter
Lift the purple filter out, tipping it away from you so dust doesn't fall back in.
4
Insert the new (dry) filter
Seat the new filter flat; if reusing a washed one, confirm it's completely dry.
5
Close and test
Click the lid shut, plug in and check suction.

⚠ Common mistakes on the DC50

The DC50 mistake that harms motors is refitting the filter damp — Dyson specifies 24 hours of air-drying. The second is confusing it with the separate post-motor filter; they are different parts.

✓ OEM vs aftermarket for the DC50

Genuine Dyson gives a guaranteed seal; good aftermarket purple filters are inexpensive — just confirm the listing lists the DC50 specifically. A spare lets you keep cleaning while the washed one dries.

🔁 How often to replace

The Dyson DC50 pre-motor filter should be replaced Every 3 months under normal use — sooner with pets or daily heavy use. Signs it's due: Reduced suction.

How we made this page: the steps are written for the Dyson DC50 specifically; the compatible-part list is pulled from our parts database and price-checked against Amazon. Last verified September 2026.