Yamaha Motor Co., Ltd. 39W-85520-10-00 Charge Coil Assembly

The Yamaha 39W-85520-10-00 Charge Coil Assembly is an OEM stator component that generates electrical power from the engine’s rotation to charge the battery and run ignition, lighting, and auxiliary systems. Commonly installed in Yamaha motorcycles and small engine assemblies where steady power generation is required, it supports replacement, repair, or retrofit to restore charging performance and maintain battery health. This charge coil provides AC output for battery charging within motorcycle alternator/stator systems, featuring copper windings with an insulated core and air cooling via the engine housing. It uses an OEM wiring harness interface and is a stator-mounted assembly, model-specific for Yamaha motorcycles. Common replacements include Yamaha 3Y1-85520-10-00, 2A6-85520-10-00, and 1T3-85520-10-00.