Spark Plug - NGK Iridium IX - 14 mm Thread - 0.708 in Reach - Tapered Seat - Stock Number 3689 - Resistor - Each
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Spark Plug - NGK Laser Platinum - 14 mm Thread - 0.749 in Reach - Gasket Seat - Stock Number 5255 -
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Spark Plug - NGK Laser Iridium - 14 mm Thread - 17.5 mm Reach - Tapered Seat - Stock Number 5599 - R
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Spark Plug - NGK Standard - 14 mm Thread - 0.708 in Reach - Tapered Seat - Stock Number 3623 - Resis
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Spark Plug - NGK Iridium IX - 14 mm Thread - 0.749 in Reach - Gasket Seat - Stock Number 2668 - Resi