T27516 Idler Guide Plate Fits John Deere 350, 350B, 350C, 350D, 1010, 400GOne New Aftermarket Replacement Idler Guide Plate Fits John Deere Crawler Dozers and Construction Equipment This aftermarket replacement idler guide plate (also referred to as a wear plate) is part of the front idler and track adjuster assembly on Fits John Deere crawler dozers and construction equipment. It mounts within the track adjuster system to guide and retain the front idler, reducing wear and maintaining proper track alignment. Each machine