Makita 424331-7 — Motor Rubber Ring B (genuine Makita)

Keep your Makita cordless vacuum running like new with the genuine Makita 424331-7 Motor Rubber Ring B. This molded rubber seal/cushion is the small but critical part that sits around the vacuum motor assembly to absorb vibration, maintain alignment, and help prevent dust from entering the motor housing.

Key details

- Part number: 424331-7. Listed as "Motor Rubber Ring B" in Makita parts diagrams.

- Material & purpose: durable molded rubber designed to cushion the DC motor, reduce vibration/noise, and provide a basic dust-sealing function between the motor and housing.

- Location: fits on the motor/housing assembly (see item 18 on the DVC350/DVC340 parts diagram).

- Condition/packaging: sold as a single, new genuine Makita replacement part.

Example compatible models

- DVC350Z / DVC350 (Makita cordless vacuum series) and DVC340Z / BVC340 / BVC350 — shown in official parts diagrams and parts lists as the matching motor rubber ring. Confirm your model against the parts diagram—item 18 corresponds to 424331-7.

Quick notes for repair

- Inspect the old ring for cracking, flattening, or hardening; replacement restores proper motor cushioning and helps prevent vibration-related wear.

- Installation is typically a simple press-fit into the motor housing area—no specialty tools required, but follow the device’s service manual or parts diagram for access and reassembly.

If your Makita vacuum’s motor is making more noise or you see dust tracking where the motor meets the housing, replacing part 424331-7 is a low-cost way to restore proper sealing and reduce vibration.