The McCormick 1255306C5 Spark Plug is an essential OEM component designed for optimal engine performance in various McCormick tractor models, including the CX, MC, and MTX series. This genuine spark plug ensures efficient combustion and reliable starting, critical for agricultural and industrial machinery. It is also cross-referenced with Case IH and New Holland part number 87309977, highlighting its broad compatibility within CNH Industrial equipment. Regular replacement with this high-quality spark plug maintains engine efficiency and reduces emissions.