OEM NGK spark plug, same part used to service your BMW 97506 -(2 step colder for N54, 1 step colder for N55) 95770 - (1 step colder for N54, Stock heat range for N55) Spark plugs are an often overlooked maintenance item. If your BMW has developed a misfire, studders, or feels down on power it could be due to worn out spark plugs. Please note Tightening torque for this spark plug is 23 ± 3 Nm, a special 14mm, 12 point spark plug socket is required for removal and installation of this plug. Spark Plug Failure Symptoms: Misfiring Check Engine Light Hesitation Loss of Power Poor Fuel Economy SPECIFICATIONS Actual Product Weight: .10 lbsThread Size: 12mmPreset Gap (in): 0.030 InchGround Electrode Tip Material: PlatinumCenter Electrode Core Material: CopperCenter Electrode Tip Material: IridiumApproximate Resistor Value (Ohm): 5000 Ohm
