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HP Copper Spark Plug; 1 Heat Range Colder Than Stock; 0.028 in. Gap; 5/8 in. Hex Size/ 1 in. Reach; Resistor; Tapered Seat Type; 1.25mm Thread Pitch; 14mm Thread Size; 6 Pack;

HP Copper Spark Plug; 2 Heat Ranges Colder Than Stock; 0.026 in. Gap; 5/8 in. Hex Size; 1 in. Reach; Resistor; Tapered Seat Type; 1.25mm Thread Pitch; 14mm Thread Size; 4 Pack;

HP Copper Spark Plug; 1 Piece; 1 Heat Range Step Colder Than Stock; 9/16in. Hex Size; Resistor; 1.04in. Reach; Tapered Seat Type; 1.25mm Thread Pitch; 12mm Thread Size; 8 Pack;

HP Copper Spark Plug; 1 Pc. C-Cut; 1 Range Colder Than Stock; 0.032in. Gap; 5/8in. Hex Size; 1in. Reach; Resistor; TaperedSeatType; 1.25mm Thread Pitch; 14mm Thread Size; 8 Pack;