The Kubota W21CSH1418 is a genuine OEM spark plug designed for optimal performance in a wide range of Kubota diesel engines and machinery. This high-quality spark plug ensures reliable ignition and efficient combustion, contributing to the longevity and smooth operation of your equipment. It features a 14mm thread diameter, 9.5mm thread reach, and a 19mm hex size. The W21CSH1418 is a direct equivalent to NGK BPMR7A and Denso W22MPR-U spark plugs, providing a reliable replacement for routine maintenance.