8x NGK Racing Spark Plug Stock 5034 Nickel Core Tip Standard 0.032in R5674-7

8x NGK Racing Spark Plug Stock 7173 Nickel Core Tip Standard 0.032in R5672A-8

8x NGK Racing Spark Plug Stock 2817 Nickel Core Tip Standard 0.028in R5673-7

8x NGK Racing Spark Plug Stock 7317 Nickel Core Tip Standard 0.020in R5724-8

8x NGK Racing Spark Plug Stock 7942 Nickel Core Tip Standard 0.020in R5672A-10

8x NGK Racing Spark Plug Stock 5657 Nickel Core Tip Standard 0.020in R5674-8

8x NGK Racing Spark Plug Stock 3354 Nickel Core Tip Standard 0.032in R5670-8

8x NGK Racing Spark Plug Stock 4091 Nickel Core Tip Standard 0.032in R5671A-7