Set of 4 NGK 4912 Laser Iridium Spark Plugs ILKAR7B11 for Toyota Corolla Pontiac

Electrode Material: Iridium
Thread Size: 0.472"
Thread Reach: 26.5 mm
Ground Electrode Quantity: 1
Gap: 0.044"
Spark Plug Seat Style: Flat
Heat Range: 7
Longevity: 80-100k Miles
Thread Diameter: 12 mm
Overall Height: ISO
Resistance: 5 kOhm
Insulator Height: 50 mm
Center Electrode Core Material: Copper Core
Ground Configuration: Standard
Ground Electrode Core Material: Nickel Core
Ground Electrode Tip Design: Standard
Insulator Type: Projected
Nominal Gap: 0.044"

Designed for faster starts and quicker acceleration
Better fuel economy and lower emissions
OE approved design
Laser welded iridium center electrode tip
Platinum disc welded to backside of ground electrode
Ideal for applications with DIS (Distributorless Ignition System) “waste spark” ignition systems that require double precious metal spark plugs
Manufactured using triple-gasket sealing process to prevent leakage through the shell
Alumina silicate insulator for strength and optimal heat transfer
Cold-rolled threads for easier removal and installation
Corrugated ribs eliminate misfire causing “flashover”
Trivalent metal plating
Last 80 to 100 thousand miles