Makita Genuine 191D84-4 Carbon Brush CB258

The Makita CB-258 Carbon Brush Set (MPN 191D84-4) is a genuine OEM replacement part designed to restore and maintain the motor performance of the Makita GA4550 angle grinder.

Manufactured from carbon/graphite material to OEM specification, these brushes maintain stable electrical contact with the commutator, minimising arcing, reducing wear on the armature, and keeping the grinder running consistently under load. Using the correct brush grade is essential for protecting the motor and commutator during heavy-duty cutting, grinding, and surface preparation work.

Supplied as a matched set, each brush comes pre-fitted with a flexible lead and spring assembly for straightforward installation during routine servicing. This makes them a practical choice for planned maintenance as well as urgent replacements when brushes are found to be worn, chipped, or critically short.

For contractors and tradespeople relying on the GA4550 in construction and fabrication environments, fitting the correct genuine part helps avoid unnecessary downtime and preserves the long-term reliability of the tool.

Features and Benefits:
• Genuine Makita replacement part — assured fit and performance on the GA4550
• Carbon/graphite composition engineered to OEM specification for correct hardness and wear rate
• Stable commutator contact reduces arcing and protects the armature
• Pre-fitted flexible lead and spring assembly for quick, straightforward installation
• Supplied as a matched set to support consistent motor performance
• Suitable for routine preventative maintenance or urgent worn-brush replacement
• Helps restore lost power and smooth running under load
• Clearly identified as CB-258 / MPN 191D84-4 for accurate parts ordering