NGK 4091 (R5671A-7) Racing Plug Standard Nickel Gap 031 (0.8mm)

NGK Spark Plug (Racing) Standard Nickel (Pre-Gap 0.032) 4091 (R5671A-7)

NGK 4091 Spark Plug

NGK Racing Spark Plug Stock 4091 Nickel w/ V-Groove Tip .032in R5671A-7

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NGK V-Power Non Resistor Set Of 4 Racing Spark Plugs R5671A-7 4091

NGK Spark Plug p/n JR9B or JR9A #40 NOS 12 x 19 mm Suzuki GSX1100 R1100 1988-93

NGK - 4091 - Spark Plug #4091/04