1OE Number: The referencing OE number of this voltage regulator are 21066?7012, M149302, AM138443, M149660, which is molded depend on the original data. 2Fitment: The electronic regulator is a replacement for John Deere 325, 335, 345, 737, 757, GT235, GT235E, GT245, GX255, GX325, GX335, LT190, LX277 lawn Tractors. 3Rectifier Operation: The rectifier uses semiconductor diodes to conduct current to rectify and control the power supply and improve machine efficiency. 4Function: The rectifier can provide a stable voltage for the battery and improve the ignition efficiency of the lawn tractor engine. 5Ideal Replacement: Can directly replace the old or damaged rectifier. It is strong, anti aging and wear resistant, ensuring long term use and stable performance.