E3 E3 E3.10 Spark Plug, 13/16 in Fill Gap, 14 mm Thread, 13/16 in Hex, For: Two-Cycle, Four-Cycle Engines $6.59EachChecking...Fill Gap Size13/16 InThread Size14 MmThread Length3/8 In +2 more Hex Size13/16 InSuitable ForTwo-Cycle, Four-Cycle Engines
E3 E3 E3.12 Spark Plug, 14 mm Thread, 3/4 in Hex $6.59EachChecking...Thread Size14 MmThread Length0.375 InHex Size3/4 In