The NGK Spark Plugs Iridium IX LKAR6AIX-11 spark plug is designed to provide dependable ignition performance, efficient combustion, and long service life for compatible automotive applications. Manufactured by NGK Spark Plugs, this premium spark plug uses an iridium center electrode that is 25% smaller than a platinum electrode and approximately one-quarter the size of a conventional nickel electrode.
The ultra-small diameter center electrode requires less voltage to create a strong spark, helping reduce the load on the ignition system while supporting consistent engine operation. Its fine-wire design promotes reliable starts, smooth performance, and efficient fuel combustion when properly matched to the vehicle’s engine requirements. The NGK Iridium IX series is engineered for drivers seeking durable replacement spark plugs with advanced electrode technology.
A newly designed metal shell plating provides enhanced resistance to corrosion, helping protect the spark plug in demanding operating environments and supporting easier removal during future service. This LKAR6AIX-11 model is identified by NGK manufacturer and vendor part number 91187. Confirm the vehicle’s year, make, model, engine, and original equipment specifications before installation to verify fitment, reach, heat range, and gap requirements.
Features:
- Iridium Electrode: Provides advanced spark plug technology for reliable ignition and long service life.
- Fine-Wire Center Electrode: Uses an electrode approximately 25% smaller than platinum and one-quarter the size of conventional nickel designs.
- Reduced Voltage Requirement: Helps create a strong spark with less voltage, reducing ignition system demand.
- Ignition System Support: Promotes efficient operation and may help extend ignition component life.
- Corrosion-Resistant Shell: Enhanced metal shell plating helps protect against corrosion and supports easier servicing.
- Application Fitment: Designed for compatible vehicles using the NGK LKAR6AIX-11 spark plug specification.
- Brand: NGK Spark Plugs.
- Manufacturer Part Number: 91187.
- Vendor Part Number: 91187.