Increased performance with World's smallest Iridium Center Electrode (0.4mm). To increase ignitability, the important point is to let the flame kernel produced by the spark to grow unobstructed. Normally, this can be accomplished by widening the spark gap. However, this causes spark voltage to incre...

4 New NGK IRIDIUM IX Spark Plug BR6HIX # 3419, Iridium IX Plug, 14mm Thread Size, 12.7mm (1/2") Reach, 13/16" (20.6mm) Hex Size, Gasket Seat, Resistor, Removable Terminal Nut, Fine Wire (0.6mm) Iridium Center Electrode, Tapered Cut Ground Electrode, .031" (0.8mm) Gap, Heat Range 6

ONE PIECE PERFORMANCE PLUG. If you need utmost ignition performance & spark voltage at unparalleled levels don't miss the chance to purchase our racing plugs. Misfires are now controlled & racing plugs will allow you to have steadily high levels of improved acceleration & throttle response. Due to B...

NGK iridium plugs represent the ultimate evolution of spark plug technology and performance. The iridium center electrode is both stronger and harder than platinum. This tapered cut iridium center electrode reduces the voltage requirement for spark. This

Dependable performance. This Champion spark plug features a copper core electrode that provides increased conductivity and heat control for good overall wear.

ONE PIECE PERFORMANCE PLUG. If you need utmost ignition performance & spark voltage at unparalleled levels don't miss the chance to purchase our racing plugs. Misfires are now controlled & racing plugs will allow you to have steadily high levels of improved acceleration & throttle response. Due to B...

Dependable performance. This Champion spark plug features a copper core electrode that provides increased conductivity and heat control for good overall wear.

ONE PIECE PERFORMANCE PLUG. If you need utmost ignition performance & spark voltage at unparalleled levels don't miss the chance to purchase our racing plugs. Misfires are now controlled & racing plugs will allow you to have steadily high levels of improved acceleration & throttle response. Due to B...