Hello!  We have an excellent used magneto from a Briggs 8P502 series engine that has been bench tested, cleaned and is ready for installation.  Mounting screws are included.  Engine is a 300 E series.  Part number is 593872.  This is a genuine OEM part.  Please feel free to ask any questions you may have and visit our store for complete small engines, small engine parts, antiques, collectibles, farm items, sewing supplies and so much more!  Thank you for viewing.