The Kubota RG51847520 Side Glass Guide is an authentic OEM replacement part designed to maintain the smooth and secure operation of the side window in various Kubota M-Series agricultural tractors. This genuine guide helps to prevent rattling and ensures the window tracks correctly within its frame, contributing to the overall comfort and integrity of the operator's cab. Manufactured to Kubota's exact specifications, it guarantees a precise fit and reliable performance for models such as the M7040, M8540, M9540, M9960, M108S, M100GX, M110GX, M126GX, M135GX, and M135GXS.