MTD E3.12 Spark Plug, 0.551 in Thread, 6

14 mm thread Dia, 3/8 in reach, 3/4 in hex socket. Quicker starts, Saves on fuel. Replaces Champion 5843, CJ6, CJ6Y, RCJ6, RCJ6Y, CJ7Y, RCJ7Y, CJ8, CJ8Y, RCJ8, RCJ8Y. Replaces NGK BPM4A, BPMR4A, BPMR4A10, BMR6A, BPM6A, BPMR6A, BPM6A10, BPM6Y, BM7, BM7A, BMR7A, BPM7A, BPMR7A, BPM7Y. Replaces Autolite 254, 255, 2974, XST254, XST255, XST2974.