Champion Spark Plug- 5843

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EZ Start 5843 Spark Plug, 14 mm Thread, 3/4 in, 3/8 in 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. No.5843 is equivalent to Nos.CJ8, CJ7Y, CJ8Y, RCJ8, RCJ7Y, RCJ8Y, J8C, and RJ8C. No. 5846 is equivalent to Nos. CJ14. No. 5861 is equivalent to Nos. J19LM, RJ19LM, J17LM, and RJ17LM.

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