The NGK CMR7A-5 spark plug (Fricke 15270377) is a high-quality, genuine replacement part designed for optimal ignition in various small engines. This resistor-type spark plug features a 10 mm thread diameter, 12.7 mm thread reach, and a 16 mm hex size, ensuring precise fitment and efficient combustion. It is a direct equivalent to NGK 3066 and is widely used in applications requiring a reliable, durable spark plug for consistent engine operation.