SET OF 4 PERFORMANCE SPARK PLUG Suzuki X-90 1.6L 16V with all engine serial nr. (1998-1995) * 24IP1DOR15LGSL48VB4 1. Higher HP and torque by up to 3 % 2. increased economy by up to 5% 3. 360 Firing Technology 4. Improved acceleration by up to 15 % 5. 25,000 miles - 40,000 km duration