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Best Replacement Brushes for a Robot Vacuum: 5 Picks That Fit Right
Worn side brushes stop sweeping debris into the robot’s path, and the fix is usually a cheap multipack rather than a new machine. This guide covers the best replacement brushes for a robot vacuum across the two brands that dominate the category, Shark and Eufy, plus one generic kit for budget robots. It suits owners of Shark Matrix and Shark AI models, Eufy RoboVac households, and anyone running a low-cost robot that needs a full refresh kit. The overview table below lines up every pick by spec and price tier so a decision takes under a minute.
The Picks at a Glance
| Product | Key Spec | Best Use | Price Tier |
|---|---|---|---|
| 6 Pack Side Brushes for Shark Matrix | 6 side brushes | Shark Matrix owners buying spares in bulk | Budget |
| 4 Pack Side Brush for Shark AI | 4 side brushes | Shark AI and RV2500-series owners | Budget |
| Side Brush Replacement for Eufy RoboVac | 6 side brushes | Older Eufy RoboVac models | Budget |
| Robotic Vacuum Replacements for eufy Max | 1 roller brush, 6 side brushes, 5 filters | Full tune-up of Eufy Max robots | Mid |
| Replacement Parts for MAMNV BR151 and Others | 6 side brushes, 4 mop pads, 4 filters | Budget robots that also mop | Budget |
1. 6 Pack Side Brushes for Shark Matrix Robot Vacuum Cleaner
Type: Side brush multipack
Quantity: 6 brushes
Compatibility: Shark Matrix RV2310, RV2310AE, AV2310, AV2310AE, RV2300, RV2300S, RV2320S, UR2350AE
Intended use: Replacement of worn sweeper arms
These are the three-arm sweeper brushes that spin at the front corner of a Shark Matrix and flick crumbs toward the suction inlet. The pack of six covers a full set plus spares, which matters because side brushes are the fastest-wearing part on any robot. The arms are stiff enough to reach along baseboards but flexible enough to bend rather than snap when they catch a cable. This is the pick for Matrix owners who want to swap a brush the moment the bristles splay and never think about it again.
Trade-off: Six identical brushes mean no roller or filter in the box, so a robot that also needs a main brush and filter refresh requires a second order.
Best for: Shark Matrix households on a maintenance schedule. Not for: Shark AI or RV2500-series owners, whose mounting differs.
2. 4 Pack Side Brush for Shark AI AV2501S, AV2501AE, RV2502AE
Type: Side brush multipack
Quantity: 4 brushes
Compatibility: Shark AI AV2501S, AV2501AE, RV2502AE, RV2520AOUS, AV2510AOUS
Intended use: Replacement of worn sweeper arms
This four-pack targets the Shark AI family rather than the Matrix line, and the two are not interchangeable. The brushes are built for the AI series’ front-corner mount and sweep dust out of corners the round body cannot reach. Four units give one working set plus a spare pair, which is a sensible middle ground for a household that replaces brushes once or twice a year. It is the most popular pick in this roundup by purchase volume, which fits a large installed base of Shark AI robots.
Trade-off: Buyers with several Shark robots across different lines need to check each model against the list, because this pack will not serve a Matrix unit.
Best for: Shark AI and RV2500-series owners. Not for: Matrix RV2300 or RV2310 households.
3. Side Brush Replacement for Eufy RoboVac 11S, 12, 15C, 30, 30C, 35C
Type: Side brush multipack
Quantity: 6 brushes
Compatibility: Eufy RoboVac 11S, 12, 15C, 30, 30C, 35C
Intended use: Replacement of worn sweeper arms
Eufy’s RoboVac line has a large and long-lived install base, and this six-pack covers the non-Max versions of the 11S, 12, 15C, 30, 30C and 35C. The brushes use the snap-on hub Eufy favors, so a swap takes seconds with no tools. Six units is generous for the money and lets a household replace all sweeping arms at once when the bristles start curling outward. It is the straightforward choice for an older Eufy that still runs well but sweeps poorly.
Trade-off: The listing deliberately excludes the Max variants, so an 11S Max or 30C Max owner who orders this pack will find the brushes do not seat correctly.
Best for: Standard Eufy RoboVac owners. Not for: Eufy Max-series robots, which need the kit in the next section.
4. Robotic Vacuum Replacements for eufy 11S Max, 30C Max, 15C Max
Type: Full replacement kit
Contents: 1 roller brush, 6 side brushes, 5 unibody filters
Compatibility: eufy 11S Max, 30C Max, 15C Max
Intended use: Complete maintenance refresh
This is the only pick here that refreshes the whole cleaning path rather than just the sweeper arms. One roller brush restores pickup on carpet and hard floor, six side brushes handle edges, and five unibody filters keep exhaust air clean and suction strong. Buying the three part types together usually costs less than sourcing them separately. It suits a Eufy Max owner who has run the robot for a year or more and noticed weaker pickup alongside poor corner sweeping.
Trade-off: The kit is tied to the Max variants only, and the roller brush is a single unit, so heavy households may want a second roller on hand.
Best for: Eufy 11S Max, 30C Max and 15C Max owners doing a full tune-up. Not for: Standard 11S or G30 robots, which this kit explicitly does not fit.
5. Replacement Parts for MAMNV BR151, ZCWA BR151 and Compatible Robots
Type: Combined sweep and mop kit
Contents: 6 side brushes, 4 mop pads, 4 filters
Compatibility: MAMNV BR151, ZCWA BR151, MANVINS G20, Kilgone G20, ONSON BR151, MANVN BR151, ZC WAS BR151, iMartine BR151
Intended use: Maintenance for budget sweep-and-mop robots
Budget robots sold under several brand names often share one chassis, and this kit covers that cluster. Six side brushes, four washable mop pads and four filters address every consumable on a sweep-and-mop unit in one purchase. The mop pads are the practical inclusion here, since fabric pads thin out and stop gripping grime long before the robot itself fails. It is the pick for a household running an entry-level robot that mops as well as vacuums.
Trade-off: The broad compatibility list reflects shared budget hardware, so a buyer with an unusual or rebranded model should match the exact name before ordering.
Best for: Owners of the listed BR151 and G20 budget robots. Not for: Shark or Eufy owners, whose mounts and filters are entirely different.
Before You Buy
- Compatibility: Match the exact model code, not just the brand. Shark Matrix and Shark AI brushes do not interchange, and Eufy Max robots use different parts from standard models.
- Material: Stiff nylon-type bristles sweep better on hard floor; softer arms survive cable tangles. Cheap packs vary, so inspect a brush before fitting the full set.
- Quantity: Side brushes wear fastest, so a six-pack usually beats a two-pack on cost per brush for a long-term owner.
- Included accessories: A kit with roller brush and filters saves a second order if the robot is due a full service.
- Care: Rinse brushes and mop pads, dry them fully, and pull hair from the hub before refitting to keep the motor load low.
- Storage: Keep spares in a dry bag away from sunlight, since bristles stiffen and warp when left exposed.
Frequently Asked Questions
- How often should robot vacuum side brushes be replaced? Every three to six months in a busy home, or sooner once the arms splay outward and stop reaching corners.
- Can brushes from one Shark model fit another? Not reliably. Matrix and AI series brushes mount differently, so the model code on the robot is the deciding factor.
- Do aftermarket brushes perform like original parts? For side brushes the difference is small, since the part is simple plastic and bristle; roller brushes and filters vary more in quality.
- Is it worth buying a kit with mop pads and filters? Yes when the robot is due a full service, because one order covers every consumable and usually costs less than separate purchases.
- What signals a worn side brush? Bristles bent permanently to one side, missing arms, or visible debris left along baseboards after a clean cycle.
- Should brushes be cleaned between replacements? Yes. Rinsing and drying them weekly removes hair and grit that accelerate wear and strain the brush motor.
Bottom Line
The best replacement brushes for a robot vacuum are the ones that match the exact model code, and the 6 Pack Side Brushes for Shark Matrix is the top pick for Matrix owners who want a full set of spares at a budget price. Eufy Max households should go straight to the full kit with roller brush and filters, while standard Eufy and Shark AI owners have a dedicated pack each. Confirm the model number once, and the rest is a two-minute swap.
