For what a jet would damage
Some surfaces should never meet a jet: paintwork, soft wood, plastic garden furniture, a caravan side. A water-fed brush cleans them by contact, at low pressure, without lifting the finish. We compare bristle softness, rotary against fixed heads, and telescopic handles — where reach usually costs rigidity.
One handle, three functions — the closest thing to a complete car wash in a single accessory.
Contact cleaning at low pressure: the right tool for everything a jet would damage.
The bigger sibling of the WB 130 — more surface per pass, and the same grit discipline.
A bristle that is too stiff holds a grain of sand and walks it across the panel. The stated bristle hardness decides whether the brush goes on a car or only on concrete.
Kärcher WB 130 Rotating Wash Brush
A narrow brush doubles the number of passes and the overlap marks. The stated brushing diameter says how many passes a whole car takes.
Kärcher WB 120 Rotating Wash Brush
Not by itself. What scratches is a grain of sand caught in the bristles. Rinsing the brush before and during the wash practically removes the risk.
It has to match the lance connector and the permitted pressure. A brush rated for 130 bar fitted to a 160 bar machine wears fast and can come loose.
On a car, a shampoo applied beforehand markedly improves the result and reduces friction. On furniture, water alone is usually enough.
Rinse it with clean water after each use and let it dry bristles upwards. A brush stored damp and squashed loses its shape and holds particles.
No, it complements it. Stripping hard surfaces remains the nozzle's job; the brush handles what the nozzle would damage.
Yes, and it is often the best method: it cleans without raising the fibres, unlike a direct jet which leaves greyed wood rough.
They lie down and shorten over time. A brush whose bristles no longer stand back up cleans much less well and should be replaced.
On these accessories the jet drives the brush: without enough flow it simply sits still. The stated minimum flow is therefore a condition, not an indication.
The brush is what lets you use a pressure washer on what it would otherwise damage: car, furniture, wood. Choose bristle hardness according to the surface, rinse it before every use, and treat it as a consumable.
A figure has to be published by four machines in five to earn its column. Below that, we would be comparing empty cells.
| Model | Price | Amazon reference | Type |
|---|---|---|---|
| Kärcher WB 130 Rotating Wash Brush | 30 £ | B09TRQX1X8 | Rotating, water-fed |
| Kärcher WB 7 Plus 3-in-1 | 35 £ | B0BZRNJX1L | Original Kärcher accessory |
| Kärcher WB 120 Rotating Wash Brush | 45 £ | B07L6QX46L | Rotating, water-fed, with universal brush head |
Specifications: manufacturer sheets for cleaning machines and the matching Amazon product pages. Prices and availability: Keepa. Every figure in this table names its source.
Most recent revision in this category: August 15, 2026.
Prices quoted in these summaries are dated readings. The live price is shown next to each product.