This genuine DeWalt replacement part is a 40UF 370V capacitor for use with generators. A properly functioning capacitor is essential for the safe and reliable use of a generator. The capacitor is an electrical device with two terminals, and is used to store energy through an electrical field. The two main functions of the capacitor are to regulate voltage and induce voltage into the rotor. A bad capacitor will result in the generator giving a low voltage reading. The capacitor may become worn out or damaged with extended use, necessitating replacement. Remember to check the capacitor periodically to spot any wear or damage. This part is an identical replacement for a capacitor that is missing, worn out, or damaged. Prior to working with this part, please refer to the original product manual for a full list of included parts and installation instructions. Additional tools may be required for installation of this part. For safety, always wear gloves and ensure unit is powered down prior to performing any installation or repair.This high quality OEM replacement part is sourced directly from the manufacturer, and it is sold individually. This part is compatible with Porter Cable, DeWALT, DeVilbiss, and more generators.