The Kubota W21CSH1452 is a genuine OEM spark plug designed for optimal performance in a wide range of Kubota gasoline engines found in B, BX, F, G, GR, RTV, and ZD series machinery. This high-quality spark plug ensures reliable ignition and efficient combustion, contributing to the longevity and smooth operation of your equipment. It is a direct replacement for several older Kubota part numbers, including 16871-67710, 16871-67712, 16871-67713, and 16871-67714.