Iridium Spark Plug

They feature a fine, 0.6mm diameter iridium alloy center electrode, which ensures a strong spark and durability even under demanding conditions, such as in turbocharged vehicles with standard turbine setups. These spark plugs are intentionally designed with a heat range of 7, making them two grades colder than standard. This cooler heat range is crucial for reducing under-hood temperatures and mitigating the risk of pre-ignition and detonation in higher-performance or modified engines. The plug's specifications include a M14x1.25 thread size, a 19mm thread length, a total length of 69.5mm (excluding the electrode), and a 16mm socket size, ensuring compatibility with a wide range of applications. The Greddy Iridium Tune spark plugs are identified by their ISO number IT 07 ISO and cross-reference with the NGK number T7340T-7. They are ideal for engines that have undergone light to moderate tuning, offering improved acceleration and power delivery.