Accel 8198 | Shorty 14mm Thread 0.460in Reach Tapered Seat Copper Spark Plugs(8)

Brisk RR15YS Silver Racing spark plug for race car engines. Features a 14mm thread, 25mm (1in) reach, and 16mm (5/8in) hex with a tapered seat. Heat Range 15, resistor, with a silver center electrode...

Brisk RR12S Silver Racing spark plug for race car engines. Features a 14mm thread, 25mm (1in) reach, and 16mm (5/8in) hex with a tapered seat. Heat Range 12, resistor, with a silver center electrode...

Brisk RR10S Silver Racing spark plug for race car engines. Features a 14mm thread, 25mm (1in) reach, and 16mm (5/8in) hex with a tapered seat. Heat Range 10, resistor, with a silver center electrode...

Brisk RR14YS Silver Racing spark plug for race car engines. Features a 14mm thread, 25mm (1in) reach, and 16mm (5/8in) hex with a tapered seat. Heat Range 14, resistor, with a silver center electrode...

Brisk GR14YS Silver Racing spark plug for race car engines. Features a 14mm thread, 18mm (0.71in) reach, and 16mm (5/8in) hex with a tapered seat. Heat Range 14, resistor, with a silver center...