NGK

R5674-7; Non Automotive; Single

R5674-8; Without Resistor; Copper; Nickel With V-Groove; Racing; Single; 14 Millimeter Thread; 11 Millimeter Reach; 5/8 Inch Hex; Heat Range 8; 0.020 Inch Gap; Tapered Seat

R5674-9; Racing Spark Plug; Single

R5724-9; Without Resistor; Copper; Nickel With V-Groove; Racing; Single; 14 Millimeter Thread; 18 Millimeter Reach; 5/8 Inch Hex; Heat Range 9; 0.020 Inch Gap; Tapered Seat

R6061-11; Non Automotive; Single

R6061-9; Non Automotive; Single

R6252K-105; OE Replacement; Single; With Solid Terminal Nut

R7282-10; With Resistor; Copper; Iridium; Racing; Single; 14 Millimeter Thread; 19 Millimeter Reach; 5/8 Inch Hex; Heat Range 10; 0.024 Inch Gap; Gasket Seat

R7437-8; With Resistor; Copper; Iridium; Racing; 1.25 x 14 Millimeter Thread; 26.5 Millimeter Reach; 5/8 Inch Hex; Heat Range 8; 0.028 Inch Gap; Gasket Seat; Single

R7437-9; Racing Spark Plug; Single

BZ7HS-10; Non Automotive; Single

R6061-10; Without Resistor; Copper; Nickel; Racing; Single; 14 Millimeter Thread; 19 Millimeter Reach; 13/16 Inch Hex; Heat Range 10; 0.031 Inch Gap; Gasket Seat