E3.18 diamond fire spark plug. Lifetime assured. More power, efficiency & fewer emissions. Replaces champion n4c, n5c, n7yc, rn4c, rn5c, rn7yc, replaces ngk b4es, b5eb, b5es, bev, b6eb, b6eb11, b6es, b6es11, b6eb, b7eb, b7eb11, bp7es, bp7es11, bpr7es, bpr7es11, br4es, br5eb, br5es, br6eb, br6eb11, br6es, br6es11, br7eb11, bur7ea11, bur7eb11, replaces autolite 403, 404, 4055, 4056 & xst4055. Specifications Size: Small Weight: 0.16
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