Machine-rolled threads prevent seizing or cross-threading
100% pre-fired to assure highest possible quality
Exceptional strength & thermal conductivity
Five rib insulator prevents flashover
Denso Iridium TT Spark Plugs (like this IW27) combine iridium and platinum with Denso’s 360° laser-welding process to machine-engineer a spark plug capable of over 150,000 kilometres of driving. The premium design technology allows for spark minimisation and ignitability maximisation, meaning better power transference, greater torque and improved fuel economy for your vehicle.
Cast Iron: 26-30 lb. ft. Aluminum: 15-22 lb. ft.