Hitachi 4 Ignition Coils & NGK 4 Ruthenium HX Spark Plugs Kit - Compatible with Scion xA, xB, Toyota Echo, Prius, Yaris 1.5L Naturally Aspirated Engine - Improve Performance & Fuel Efficiency for City Driving & Daily Commutes

Kit Content:4 x Hitachi Ignition Coils4 x NGK Ruthenium HX Spark PlugsItem Description:Manufacturer: (Ignition Coils) HitachiThread Diameter(mm): (Spark Plugs) 14.00Center Electrode Core Material: (Spark Plugs) CopperElectrical Terminal Type: (Spark Plugs) Non-Removable NutGround Electrode Quantity: (Spark Plugs) 1Center Electrode Tip Material: (Spark Plugs) RutheniumPre-Gap Size(in): (Spark Plugs) .044Hex Size(in): (Spark Plugs) 5/8Resistance(Ohms): (Spark Plugs) 5000Manufacturer Heat Range: (Spark Plugs) 5Ground Electrode Tip Design: (Spark Plugs) Dual Fine Electrode - High IgnitabilitySeat Type: (Spark Plugs) FlatInsulator Height(mm): (Spark Plugs) 50.50Ground Configuration: (Spark Plugs) StandardGround Electrode Core Material: (Spark Plugs) NickelReach(in): (Spark Plugs) .75