ER12S Silver Racing Spark Plugs (Set of 16)

The Brisk Racing ER12S spark plugs are a high-performance upgrade recommended for cars with performance software, turbocharger upgrades, and increased boost pressure. The ER12S features a non-projected tip, making it safer for nitrous applications, and is suitable for naturally aspirated and boosted GEN3 HEMI applications that use a crush sleeve spark plug fitment. Silver is the best thermal and electrical conductor of all metals, providing superior electron flow for optimal spark delivery. This results in consistent peak spark performance, promoting efficient combustion, which can lead to increased horsepower. The plugs also feature a special high dielectric strength insulator for exceptional dielectric strength, preventing dielectric breakdown and spark blowout in extreme conditions. They are beneficial for easier cold starts and operation under partially fouled conditions. Key specifications include a 14mm thread size, 26.5mm reach, 16mm hex size, and a gasket seat type. The design utilizes a silver center electrode and tapered ground electrodes, with a resistor included. The non-projected tip design adds protection to the spark plug's electrode. The plugs replace part numbers 06K 905 601 D and 06K 905 601 M. For installation, it is recommended to torque the plugs to 20-30 Nm (18-21.6 ft.lb) and apply a thin coating of high-temperature anti-seize to the threads. Applications include OEM+ replacements for various Audi models such as the C7 S6/S7/RS7 4.0t, 8S TTRS & 8V.5 RS3 2.5 TFSI, and 8J TTRS 2.5T. They are also recommended as one step colder than OEM for Stage 1 & 2 upgrades on numerous Volkswagen and Audi models, including the GTI, Golf R MkVII, Alltrack EA888.3 1.8T, 8S TT/TTS 2.0t, 8V/8V.5 A3/S3, and B9 A4 2.0t. The cooler heat range aids in detonation resistance for high power applications.