Karcher WD4, WD5, WD5 P and WD6 PS fleece filter bags
If your machine is one of the models below, the bag you need is the Karcher fleece filter bag, part number 2.863-006.0.
Karcher WD4, WD5, WD5 P and WD6 PS wet and dry vacuum ranges.
Specification
| Reference | Karcher fleece filter bag, part number 2.863-006.0 |
|---|---|
| Fits | Karcher WD4, WD5, WD5 P and WD6 PS wet and dry vacuum ranges |
| Capacity | Matched to the WD4 to WD6 tank size (typically 20 to 30 litres tank, bag sized accordingly) |
| Material | Non-woven fleece |
| Bags per box | 5 bags (standard retail pack) |
What to check before you order
This is a larger fleece bag than the WD2/WD3 reference and the two are not interchangeable between machine sizes.
How to replace it
- Unplug the vacuum and open the tank lid.
- Lift out the full fleece filter bag by its card or plastic collar, keeping it level so it does not spill.
- Check the collar shape against the Karcher fleece filter bag, part number 2.863-006.0 before fitting the new one; a bag that does not sit flush will not seal.
- Slide the new fleece filter bag collar into the machine's bag holder until it clicks or seats fully home.
- Close the compartment door. Most machines will not run, or will run with reduced suction, if the door is not fully latched.
- Run the vacuum briefly on an empty patch of floor to confirm suction feels normal before doing a full clean.
Common mistakes
- Buying by vacuum model number alone instead of checking the bag shape, which leads to a bag that does not seal.
- Reusing a bag past the fill line printed on it, which chokes airflow and can strain the motor.
- Forcing a bag from a different reference into the holder; if it does not seat without pressure, it is the wrong one.
How this reference sits in the Karcher range
Karcher also uses the Karcher WD2/WD3 fleece filter bag shape, and the two are not interchangeable. Compare before you order:
| Other Karcher reference | Fits | Capacity |
|---|---|---|
| Karcher WD2/WD3 fleece filter bag | Karcher WD2 and WD3 wet and dry vacuum ranges | Matched to the WD2/WD3 tank size (typically 12 to 17 litres tank, bag sized accordingly) |
How long a pack lasts
A retail pack holds 5 fleece filter bags. At the usual rhythm of one change every four to eight weeks in an average household, that pack covers roughly 5 to 10 months, so most people buy bags once or twice a year rather than monthly.
The 30 litre capacity is the volume the bag holds, not a fitting measurement: two bags of the same capacity can have completely different collars. Use it to judge how often you will be changing the bag, and the collar shape to judge whether it fits. Our guide on how often to change a vacuum bag explains what shortens that interval.
Where this information comes from
The specification above is taken from Karcher official accessories documentation, part number 2.863-006.0 (karcher.com). References are re-checked when a manufacturer renumbers a pack; if you find a discrepancy with your own machine, tell us and the page is corrected.