John Deere M71939 Spark Plugs, Set of 2 are equipment manufacturer (OEM) parts designed to fit a variety of John Deere models including the 345 (except for engines marked FD611V-ES01445 except with engine marked ES01 or FS01), F725 (except for engines marked FS590-ES03), and F735LX178, LX188. This set includes two spark plugs that help ensure reliable engine performance and efficient operation. If you need assistance finding the right John Deere part or accessory, specialists are available Monday through Friday from 8:00 AM to 5:00 PM (EST) by calling 800-345-2396 or via email. Hartville Hardware strives to provide accurate parts recommendations based on reliable information, but compatibility can change without notice, so contacting customer support if uncertain is . Model Number: M71939