Upgrade your BMW's ignition performance with this set of 6x Genuine NGK 97506 SILZKBR8D8S Laser Iridium Spark Plugs. 031" (0.8mm) Center Electrode Material: Iridium Type: Fine Wire Size: 1.0mm Projection: Extended Projection Ground Electrode Material: Platinum Type: Square Shape: Taper Cut Quantity: 1 Resistor: Yes Resistor Value: 5k Ohm Heat Range: 8 Features: Special Gasket Torque Specs: Cast Iron: 10.8-18 lb.
