Fitment: Replacement for GM, Hummer, & Isuzu 8 cylinder engines: V8 4.8L, 5.3L, 6.0L, 8.1L.. Note: Fits Square style Coil. Does not fit round style.. Ignition coil can convert the power of your vehicle from 12 volts to more than 25,000 volts.. Helps avoid spark plug failure, drivability complaints, pre-ignition and detonation.. Helps ensure proper engine performance, maximize fuel economy..
