Brisk MR12ZS Premium Racing Plug 12mm 26.1mm Reach HR12 Gasket Seat

Brisk MR12ZS Premium Racing spark plug for race car engines. Features a 12mm thread, 26.1mm (1.03in) reach, and 16mm (5/8in) hex with a gasket seat. Heat Range 12, resistor, with a surface discharge design for improved spark and combustion in high-performance racing engines. Ideal for high-compression setups. Recommended torque: 10-15 ft-lbs. Gap: 0.020-0.035 inches. Sold as each.