iRobot Roomba i4558 – Plus.Parts® Replenishment Kit

The iRobot Roomba i4558 is a numeric variant of the Roomba i4+, the self-emptying version of iRobot’s mid-range i4. The Clean Base dock captures debris in a sealed AllergenLock bag automatically after each run, so the robot can clean on its own schedule without a bin to empty after every session. Navigation uses iAdapt 2.0, which reads optical floor patterns to move methodically through rooms rather than relying on random bounce paths. Twin rubber extractors, interlocking rollers rather than bristle brushes, lift hair and debris from hard floors and carpet while resisting the tangling that affects traditional brush rolls. The maintenance reality of any self-emptying robot is that those extractors and filters see heavy use: the rubber hardens gradually with age, the filter media loads with fine particulate that restricts airflow, and the side brush loses its outward arc. These are expected wear patterns, not faults, and keeping fresh parts on hand is how the i4558 stays at its baseline.

That is what this replenishment kit is for. It contains Plus.Parts® components designed as a direct-fit alternative to the original iRobot consumables: dual rubber brushes, 3 side brushes, 3 filters and a cleaning tool. Nine parts matched to the i4558 mounting points and service schedule. The filters use a media density that holds its capture rate across the full replacement interval, and the rubber brush compound is formulated to stay flexible rather than hardening the way cheaper aftermarket alternatives tend to do after a few months.

Components built to the replacement cadence the i4558 runs. If you have a question about which set fits a specific variant of the i4+ or anything else about your order, the team is reachable and answers personally.

At a glance

• Direct-Fit Compatibility – Every component matches the i4558 mounting points and clip dimensions, making replacement as straightforward as swapping the original parts.
• Designed for Daily Use – Rubber brush compounds and filter media rated for daily operation across a full replacement cycle, not just the first few weeks of use.
• Responsive Support – A real team behind every order, reachable for compatibility questions or anything else about your purchase.