As an Amazon Associate I earn from qualifying purchases.Updated: March 19, 2026
The Post-Motor Filter in your Dyson V7 Motorhead is crucial for trapping fine dust and allergens after the air passes through the motor. Over time, it accumulates debris and loses efficiency, leading to reduced suction power and potential motor strain. Replacing this filter regularly ensures your vacuum cleaner continues to operate at its best.
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Function: The Post-Motor Filter captures microscopic particles that escape the primary filter, ensuring clean exhaust air.
Signs it needs replacing: Reduced suction power, increased noise, and a musty odor from the device are common indicators.
OEM vs aftermarket: OEM filters guarantee compatibility but can be pricier. Aftermarket options often provide good value for money, but always verify fitment before purchase.
Installation: Replacing the Post-Motor Filter is generally straightforward and involves unclipping the old filter and inserting a new one.
Replacement schedule: every 6 months
Compatibility warning: always verify part number matches your exact model before ordering
Pros & Cons
Pros
✓ Restores device to original performance without buying a new unit
✓ Significantly cheaper than a full device replacement
✓ Multiple options available from OEM and aftermarket sellers
Cons
✗ OEM parts cost more than third-party alternatives
✗ Wrong part number will not fit — model verification is essential
Common Use Cases
Scheduled maintenance: replacing on the every 6 months schedule
Performance restoration after noticing reduced output or efficiency
Preventive replacement before a worn part causes secondary damage
Who Should Buy This
This replacement part is ideal for Dyson V7 Motorhead owners who are experiencing decreased performance and want to extend the life of their vacuum cleaner.
Not ideal for: If your device is significantly damaged or outdated, a full replacement might be more cost-effective than individual part replacements.
Good to Know Before Buying
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Always confirm your exact model number (304111-01) before ordering. Part numbers vary between model variants and production years. Check the label on your device or original documentation to be sure.
Frequently Asked Questions
What is the part number for the Dyson V7 Motorhead Post-Motor Filter?
The part number is 965662-04. Always verify this matches your exact model (304111-01) before ordering, as similar models may use different parts.
How often should I replace the Post-Motor Filter on my Dyson V7 Motorhead?
every 6 months
Will aftermarket Post-Motor Filter replacements work in my Dyson V7 Motorhead?
Third-party parts are widely available and often cheaper than OEM. Look for listings that specifically mention compatibility with model 304111-01 and check buyer reviews for fit confirmation before purchasing.
Prices change frequently. See the latest deal on Amazon.