Makita Genuine 638849-4 Brush Holder Comp for Makita BHP451 / BDF4 Drills

The Makita 638849-4 Brush Holder Comp is a genuine OEM replacement part designed to restore reliable motor performance in compatible Makita cordless drill/driver models, including the BHP451 and BDF451.

Constructed from tough moulded engineering plastic with integrated copper contact tracks, the brush holder secures the motor's carbon brushes in precise alignment and routes current efficiently to the armature. A worn or heat-damaged holder can cause arcing, intermittent power, and accelerated commutator wear — replacing it as part of a routine brush service helps eliminate these issues and extends the working life of the tool.

Fitting is straightforward using standard hand tools, making it suitable for workshop servicing or on-site maintenance with minimal downtime. When paired with correctly specified replacement brushes, this component helps maintain consistent contact pressure and steady power delivery, even under sustained load — a key consideration for contractors and tradespeople relying on their tools across demanding duty cycles.

Features and Benefits:
• Genuine Makita part under OEM No. 638849-4 — assured fit and compatibility
• Moulded engineering plastic body with copper contacts for reliable current transfer
• Restores steady power delivery and reduces arcing or intermittent performance
• Precision fit maintains correct brush alignment and contact pressure
• Designed to withstand heat, vibration, and frequent duty cycles
• Compatible with Makita BHP451, BDF451, and listed cordless drill/driver models
• Straightforward installation with standard hand tools — minimal downtime
• Supports extended tool life when paired with correctly specified carbon brushes