Champion 861ECO/5861 Spark Plug 0.022 to 0.028 in Fill Gap 0.551 in Thread 0.819 in Hex - Pack of 8

Fine wire center and side electrodes concentrates spark energy for easier starts under all conditions. Booster gap delivers maximum firing voltage. Projected core nose offers peak performance. #5843 is equivalent to #CJ8, CJ7Y, CJ8Y, RCJ8, RCJ7Y, RCJ8Y, J8C and RJ8C. #5846 is equivalent to #CJ14. #5861 is equivalent to #J19LM, RJ19LM, J17LM and RJ17LM.