These plugs are heat rating 8 which is 2 steps colder than the stock plug. This is good for modified engines and can help prevent detonation or pre-ignition caused when the spark plug tip gets hot- causing a 'hotspot'. Colder plugs transmit heat away from the plug tip faster to avoid this. For more mildly tuned engines we also stock NGK 7 rated plugs, as well as the stock 6 heat rated plugs. We have a large and rapidly expanding range of items for the Skyline- consumeables, performance upgrades, tuning items, as well as a wide range of suspension and steering parts- Wheels, wheel bearings, strut bars, camber arms, & performance uprated bushes. Please check out the other items in our shop for brakes, water pumps, spark plugs, filters, fuel pumps, and lots of other essential parts. Check out.
