The Makita Genuine Yoke Unit (MPN 638396-5) is a motor field and stator assembly designed to restore correct electrical performance in compatible Makita impact drivers, including the BTD130F, BTD134, and BTD140. As the core component that surrounds the armature and generates the magnetic field driving the motor, the yoke unit plays a critical role in delivering consistent torque and speed. When the original unit becomes worn or damaged, performance degradation is often gradual — reduced power, inconsistent output, or rough running are common indicators that replacement is required. Constructed with laminated steel cores, copper windings, and durable insulation, this OEM component is built to withstand the demands of regular site use. As a genuine Makita part manufactured to original specification, it ensures a direct fit without the guesswork or compromises associated with aftermarket alternatives. Supplied as a complete assembly, it is suitable for professional maintenance operations, workshop repair, or in-field refurbishment of high-use cordless tools. Competent users with basic repair skills and appropriate disassembly knowledge will find it straightforward to fit. Features and Benefits: • Genuine Makita OEM part (MPN 638396-5) for assured fit and reliability • Laminated steel yoke with copper windings for long service life • Restores smooth motor operation, torque stability, and driving efficiency • Direct replacement for listed models — BTD130F, BTD134, and BTD140 • Built to Makita OEM specification for consistent performance and longevity • Helps extend tool life and reduce downtime on site • Supplied as a complete unit for straightforward installation
