The Case-IH 87556016 is a genuine OEM spark plug designed for optimal ignition and reliable engine operation in various Case-IH compact tractors and utility vehicles. This essential component ensures efficient starting and consistent performance across compatible models, including DX25E, DX31, DX33, DX34, DX35, Farmall 30C, Farmall 35C, Farmall 40C, Farmall 45C, and Farmall 50C. Using genuine Case-IH parts helps maintain the integrity and longevity of your machinery.