NGK 3657 Laser Iridium Spark Plug IZFR5K11

Laser Iridium ® spark plugs provide superior ignitability and long service life. The smallest tip diameter available Iridium / Platinum surfaces ensure a slow wear rate providing stable idle, superior anti-fouling, improved fuel efficiency, and lower emissions. Features & Benefits Laser Welded Iridium Center Electrode Tip Platinum Disc Welded To Backside Of Ground Electrode Provides Long Life Trivalent Metal Plating Provides Superior Anti-Corrosion And Anti-Seizing Properties Faster Starts And Quicker Acceleration Better Fuel Economy And Lower Emissions Best OEM Iridium Spark Plug Available No Supplier Warranty Attributes Resistor: Yes Electrode Type: Taper Cut Electrode Core Material: Iridium Electrode Tip Material: Platinum Insulator Type: Extended Projection Thread Size (IN): 0.551 Inch Quantity: Single Reach: 3/4 Inch Seat Type: Gasket Wrench Diameter: 5/8 Inch