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📑 Contents
⚡ Top picks for your Kärcher WD4
Stock checked on October 5, 2026
Kärcher WD4 bags in stock
Kärcher Filter Fleece Bags 4 Pack, Compatible with Karcher Wet Dry Vacuum Cleaner Models WD 4, WD 5, WD 5/P…
10pk Fleece Vacuum Bag for Karcher WD4/WD5/MV4/MV5/MV6
3 Pack Vacuum Bags fit Karcher WD4 WD5 WD5/P MV4 MV5 MV6 Wet & Dry, 2.863-006.0 Replacement Dust Bags
10 pcs Vacuum cleaner dust bags white non-woven filter bags Compatible With Karcher WD4/5/6 MV4/5/6 Wet & Dry…
EZ SPARES 12-Pack Fleece Bags Compatible with Karcher WD4 WD5, 2.863-006.0
5 Pack Fleece Filter Bags For WD4 WD5 MV4 MV5 MV6 Wet Dry Vacuum
See more compatible bags on Amazon →
BolsasPro score: combines the average rating and the number of buyer reviews on Amazon.
How to confirm it's your model
Find the vacuum's rating plate: it's usually on the bottom or under the bag compartment lid. It shows the exact model. If it matches the Kärcher WD4 or one of its variants (WD 4, WD4 Premium, WD 4 Premium, WD 4 P, WD 4 Car Kit, WD 4 S V-20/5/22), these bags will fit.
Tip: if you still have a used bag, check the cardboard collar. If it says 2.863-006.0, you're on the right track.
How to change the bag on the Kärcher WD4
- Unplug the vac and release the latches to lift off the motor head.
- Remove the used bag by pulling its collar off the inner intake port and throw it away sealed.
- Push the new bag's collar onto the tank's intake port until it's secure.
- Spread the bag across the bottom of the tank and reattach the motor head.
- For picking up liquids, always remove the bag (and on many models the paper filter too).
How often should you change the bag?
It depends on what you pick up. Fine construction dust (drywall, cement, sanding) clogs it in one or two sessions; cleaning out the garage or car it can last months. The clear sign is a loss of suction.
Equivalent part numbers
These part numbers all refer to the same bag. If a compatible pack lists any of them, it fits your vacuum:
- 2.863-006.0
- KFI 487
- 6.904-409.0
Other vacuums that use the Kärcher KFI 487 (WD 4 / WD 5 / WD 6) bag
If you own any of these vacuums, you can buy exactly the same bags:
More Kärcher models
Frequently asked questions
What bag does the Kärcher WD4 take?
The Kärcher WD4 uses Kärcher KFI 487 (WD 4 / WD 5 / WD 6) bags. The genuine part number is 2.863-006.0 (also listed as KFI 487, 6.904-409.0). Compatible bags that list that part number or the model in the title also fit.
Do compatible bags work in the Kärcher WD4?
Yes. Good-quality compatible bags have the same cardboard collar and are usually multi-layer microfiber, which filters as well as or better than the original paper. Pick packs with lots of reviews that list part number 2.863-006.0.
How often should you change the bag on the Kärcher WD4?
It depends on what you pick up. Fine construction dust (drywall, cement, sanding) clogs it in one or two sessions; cleaning out the garage or car it can last months. The clear sign is a loss of suction.
Can I use the Kärcher WD4 without a bag?
Yes, and you must remove it to pick up liquids. For dust and dry debris, always use a bag: it protects the filter, maintains suction, and keeps fine dust from blowing out the exhaust.