Replacement Brushes for Kärcher B 40

Brushes used on the Kärcher B 40

OEM part numbers are listed for cross-reference only. Sizes are confirmed against your old brush or drawing before production.

Fill options

• Disc scrub brush (D43 head): Red, medium (standard maintenance scrubbing) - 4.905-022.0; Natural, soft (cleaning and polishing textured floors) - 4.905-023.0; White, very soft (sensitive floors) - 4.905-024.0; Black, hard (deep cleaning of hard-wearing floors) - 4.905-025.0
• Disc scrub brush (D51 head): Red, medium (standard maintenance scrubbing) - 4.905-026.0; Natural, soft (cleaning and polishing textured floors) - 4.905-027.0; White, very soft (sensitive floors) - 4.905-028.0; Black, hard (deep cleaning of hard-wearing floors) - 4.905-029.0
• Cylindrical scrub brush (R55 head): White, soft (sensitive floors, polishing) - 4.762-409.0; Red, medium (standard) - 4.035-184.0; Orange, high/low bristle (structured floors and joints) - 4.762-410.0; Green, hard (stubborn dirt, hard-wearing floors) - 4.762-411.0; Black, very hard (very sticky dirt, deep cleaning) - 4.762-412.0
• Cylindrical scrub brush (450 mm roller): White, soft (sensitive floors, polishing) - 4.762-405.0; Red, medium (standard) - 4.762-392.0; Orange, high/low bristle (structured floors and joints) - 4.762-406.0; Green, hard (stubborn dirt, hard-wearing floors) - 4.762-407.0; Black, very hard (very sticky dirt, deep cleaning) - 4.762-408.0

Matching products we build

Disc Scrub Brush for Kärcher BD Scrubber-Dryers

Polypropylene (poly) bristle

Built to your B 40's dimensions

45 in Double-Chevron Cylindrical Scrub Brush for Tennant S30

Nylon, poly, Proex or mixed wire on plastic core

Built to your B 40's dimensions

Cylindrical Roller Brush for Rotowash-Type Floor Scrubbers

Nylon bristle on black plastic core

Built to your B 40's dimensions

Short-Trim Pad Driver, 12–21 in (Tennant 1220222 type)

Polypropylene short-trim bristle

Built to your B 40's dimensions

Variants and what to check

Identify the head before ordering: D43 = one 430 mm disc, D51 = one 510 mm disc, roller version = two rollers. The B 40 roller datasheet lists both 550 mm and 450 mm rollers; the 550 mm set matches the 55 cm roller configuration, while the 450 mm set belongs to a narrower roller head - measure your old roller length. Kärcher also offers roller pads, stripping rollers and microfibre rollers for the roller head.

What to send us for a quote

• Outer diameter of the brush or pad driver, measured across the bristle tips.
• The drive hub on top: clutch-plate type, number of lugs, or the hole pattern — a clear photo is usually enough.
• Trim length (how far the bristles stick out of the block) and the current fill: polypropylene, nylon or abrasive grit.
• For cylindrical decks: overall length, core diameter and the shape of the drive ends.
• Your machine model (Kärcher B 40) and, if you have it, the OEM part number from the old brush.

Frequently asked questions

Does the Kärcher B 40 use disc or roller brushes?

Both exist: D43/D51 heads take one disc brush (430 or 510 mm); the roller head takes two cylindrical brushes.

How long are the B 40 roller brushes?

Kärcher lists 550 mm rollers for the 55 cm roller head, and also a 450 mm roller range; check the length of your current roller.

Which roller suits grouted tile on a B 40?

The orange high/low roller is Kärcher's choice for strongly structured floors and deeper joints.

Machines sharing these part numbers

Other Kärcher machines

Further reading