NGK Laser Iridium Spark Plug Box of 4 (SILZKAR7B11) for Select 2011-2019 Subaru

Fits select 2011-2019 Subaru Crosstrek, Forester, Impreza, Legacy, Outback, and XV Crosstrek. This set of 4 NGK Laser Iridium High Ignitability spark plugs is engineered specifically for OE applications, providing a direct-fit replacement for factory-installed components. Designed for distributorless ignition systems, these plugs utilize a dual-precious-metal construction to optimize combustion efficiency and service life.

The center electrode features a laser-welded iridium tip, which is six times harder than platinum, ensuring a stable spark even under high-load conditions. The ground electrode is equipped with a raised platinum pad or fine wire tip to resist electrical erosion and maintain the precise gap throughout the service interval. A 98% pure copper core facilitates rapid heat dissipation to prevent pre-ignition and overheating, while the high-grade pure alumina ceramic insulator provides superior dielectric strength and thermal conductivity.

• Manufacturer Part Number: SILZKAR7B11
• Center Electrode: Iridium-tipped fine wire
• Ground Electrode: Platinum pad/tip for even wear
• Shell Finish: Trivalent metal plating for anti-corrosion and anti-seizing
• Internal Seal: Triple gaskets to prevent combustion gas leakage
• Insulator: Pure alumina silicate ceramic for heat transfer and strength
• Core Material: 98% pure copper for maximum heat removal