Denso 6 COP Direct Ignition Coils & NGK 6 Ruthenium HX Spark Plugs Kit - Compatible with Infiniti Nissan Suzuki 3.5L 4.0L V6 VQ35DE VQ40DE Engines - Performance Upgrade for Smoother Acceleration & Better Fuel Efficiency

Kit Content:6 x Denso COP Direct Ignition Coils6 x NGK Ruthenium HX Spark PlugsItem Description:Thread Diameter(mm): (Spark Plugs) 14.00Center Electrode Core Material: (Spark Plugs) CopperCenter Electrode Tip Material: (Spark Plugs) RutheniumGround Electrode Quantity: (Spark Plugs) 1Electrical Terminal Type: (Spark Plugs) Non-Removable NutGround Configuration: (Spark Plugs) StandardInsulator Height(mm): (Spark Plugs) 50.50Reach(mm): (Spark Plugs) 26.5Ground Electrode Core Material: (Spark Plugs) NickelVoltage(VDC): (Direct Ignition Coils) 12Color: (Direct Ignition Coils) BlackSeat Type: (Spark Plugs) FlatManufacturer Heat Range: (Spark Plugs) 5Ground Electrode Tip Design: (Spark Plugs) Dual Fine Electrode - High IgnitabilityResistance(Ohms): (Spark Plugs) 5000Pre-Gap Size(in): (Spark Plugs) .044Hex Size(in): (Spark Plugs) 5/8