NGK 94290 Spark Plug

NGK Laser Iridium Spark Plug 94290

NGK Laser Iridium Spark Plug 94290 is an OE-style ignition component built for precise combustion performance and long service life. It uses an iridium center electrode, nickel ground electrode, and a 0.032 in. pre-gap to support consistent spark delivery in select Porsche Cayenne and Audi A8 Quattro applications.

Laser Iridium Series Details

The NGK Laser Iridium Spark Plug line focuses on OE-level fit, stable ignition performance, and durability for modern engines. Part number 94290, also identified as ILZKR8A, follows the original equipment style used in the listed applications and is engineered with a flat seat, 12 mm thread diameter, 5/8 hex, copper core center electrode, and 1000 ohm resistance.

• Iridium center electrode tip material for precise spark delivery
• Nickel ground electrode with standard tip design and standard configuration
• 0.032 in. pre-gap for the listed vehicle applications
• Flat seat design with 12 mm thread diameter and 26.5 reach
• Non-removable nut terminal for OE-style ignition connection
• Heat range 8 for the specified engine applications

Vehicle Fitment

• Fits 2017-2018 Porsche Cayenne, N/A; gap 0.032"; actual OE manufacturer; 40,000 mi OE Mfr recommended service interval; Laser Iridium Spark Plug.
• Fits 2011-2014 Porsche Cayenne, N/A; gap 0.032"; actual OE manufacturer; 40,000 mi OE Mfr recommended service interval; Laser Iridium Spark Plug.
• Fits 2012-2016 Audi A8 Quattro, N/A; gap 0.032"; actual OE manufacturer; 35,000 mi OE Mfr recommended service interval; Laser Iridium Spark Plug.
• Fits 2016 Porsche Cayenne, N/A; gap 0.032"; actual OE manufacturer; 30,000 mi OE Mfr recommended service interval; Laser Iridium Spark Plug.

What This Spark Plug Helps Address

• Misfires caused by worn or fouled spark plugs
• Hard starting from weak ignition output
• Rough idle and inconsistent combustion
• Reduced throttle response from degraded spark performance
• Service replacement for OE-style maintenance intervals

Installation Notes

Verify engine application by year, make, and model before installation. Confirm the specified 0.032 in. gap and inspect the ignition system, coil condition, and plug wells during service. Use the correct torque procedure for the cylinder head material and thread size to help prevent damage.

Quality Assurance

NGK is a long-established OE supplier with broad coverage across domestic and import vehicles in North America. Part number 94290 reflects NGK’s OE-focused manufacturing approach for the listed Porsche Cayenne and Audi A8 Quattro applications. This part cross-references Volkswagen/Audi 101 905 622 A for the same application.