Package List: 1 x Rectifier Rectifier that meets the original standard and is ideal for replacing old and damaged rectifiers. Rectifiers use semiconductor diodes to conduct current , thus rectifying and controlling the power supply, providing stable voltage to the battery and improving the ignition efficiency of the engine. note： Please double check the part number of your item, matching information is for reference only. If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!