NGK TR6 Spark Plugs

These are very common with mildly modded LS cars...They are slightly colder heat range than the stock recommendation which is good for most bolt-on cars as well as heads/cam package cars. -NGK V-Power plugs feature a unique v-cut in the center electrode that directs the spark to the edge of the electrode, helping the spark develop more rapidly, increasing ignitability and reducing quenching. -Trivalent metal plating provides superior anti-corrosion and anti-seizing properties -Corrugated ribs prevent flashover -Pure alumina silicate ceramic insulator, provides superior strength and better heat transfer -Copper core aids in heat removal -Triple seals prevent leakage -Plug Specs Below Thread Diameter 14mm Thread Pitch 1.25mm Seat Type Tapered Reach 18mm (.709") Hex Size 5/8" (16mm) Terminal Type Solid Overall Height ISO Gap .039" (1.0mm) Center Electrode Material Nickel Type V-Cut Size 2.5mm Projection Projected Ground Elect