Pack of 6 High Performance Ignition Coils for Altima NV Murano Frontier Maxima Pathfinder Quest Xterra Infiniti I35 QX4 V6 Compatible with AIC-3012G Lifetime Warranty, brand new ignition coil in original box guarantee to improve overall performance Adds 20% more voltage to your spark plugs compared to OEM coils, more horsepower and efficient use of fuel Direct OEM Replacement, LOW PRICE but HIGH QUALITY, copper coils, 20% more resistance to shocks and vibration Ignition coils produce the high voltage necessary to ignite the air/fuel mixture in the combustion chamber When not replaced, vehicle could experience no or hard start, long crank time, misfire, and catalytic converter failure