ACCEL 0526-4 Copper Core Spark Plug， (Pack of 4)<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Considerably hotter spark creates a more efficient burn of the air fuel mixture in the combustion chamber</li><li>Significantly more power at high RPM with less fouling misfire and flame dissipation</li><li>Redesigned to reflect advancements in cylinder head and fuel management technology</li><li>Instant throttle response and noticeably better fuel economy</li><li>Machine rolled 14MM threads protect your cylinder heads</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51rQCjBMpoL.jpg" noproxy>