NGK 94712 Spark Plug

NGK Laser Iridium Spark Plug 94712

NGK 94712 is a Laser Iridium High Ignitability spark plug built for OE-style ignition performance and long service life. It uses an iridium center electrode, platinum ground electrode tip, and a copper-core design to support consistent starts, stable combustion, and controlled heat transfer in modern turbocharged and direct-injection engines.

Compatible With Audi A3, A3 Quattro, A4 allroad, A4 Quattro, A5 Quattro, A5 Sportback, A6 Quattro, A8 Quattro, Q5, Q5 PHEV, Q5 Sportback, RS3, RS7, S6, S7, S8, TT RS Quattro, Porsche Macan, Volkswagen Atlas, Atlas Cross Sport, and GTI applications that call for NGK 94712 or service number SILFER8C7ES.

Key Features

• Laser Iridium High Ignitability design for OE application requirements
• Iridium-tipped center electrode for durability and stable spark delivery
• Platinum ground electrode tip with J-gap configuration for even wear
• Copper core construction and high-grade ceramic insulator for heat control
• Resistor plug with 1000 ohm resistance
• Pre-gapped at .028 in. / 0.7 mm
• M14 x 1.25 thread, 5/8 in. hex, flat seat, 1.043 in. reach

Product Details

NGK Laser Iridium High Ignitability spark plugs are engineered around OE specifications for vehicles that demand precise ignition performance. The fine-wire iridium center electrode and platinum ground tip help maintain consistent spark characteristics over extended service intervals, while the copper core and alumina ceramic insulator support thermal stability. This NGK 94712 spark plug is a direct-fit style replacement for many Audi, Porsche, and Volkswagen engines, including select Audi A3, A4 allroad, Q5, RS3, and TT RS Quattro applications.

This part cross-references NGK SILFER8C7ES for the same application.

Common Issues This Part Addresses

• Hard starting or extended crank time
• Rough idle and inconsistent combustion
• Misfire codes related to worn spark plugs
• Reduced throttle response from weakened ignition output
• Service interval replacement on Audi, Porsche, and Volkswagen engines

Installation Notes

Verify the engine code and OE service specification before installation. Check the pre-gap against the vehicle requirement, and install to the manufacturer’s torque specification using the correct spark plug socket for the 5/8 in. hex. Because this plug is used across multiple Audi, Porsche, and Volkswagen platforms, confirm fitment by year, model, and engine application before service.

Quality Assurance

NGK manufactures this Laser Iridium High Ignitability spark plug to OE-level standards for durability and consistent ignition performance. The iridium and platinum electrode materials are selected for wear resistance, and the copper-core construction supports reliable thermal management in demanding factory applications.