SET OF 6 PERFORMANCE SPARK PLUG Nissan Patrol 4.8L I6 with TB48E engine serial nr. (all model year) * 593IP1EOR15LGS59P2PL1 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