Review on ACDelco D577 Original Equipment Ignition by John Collins

Luckily I had some gear at home to change the rivets that break when you change that spool. I can't believe the seller claims there are devices. I chose AC Delco as they were supposed to be OEM parts. This reel is made in China. IMPORTANT NOTE: When replacing the coil, it is recommended that the white heatsink compound (no dielectric or silicone grease) be reapplied between the ignition control module and the aluminum heatsink. The factory creates a minimum quantity there. Wipe it off and pour in a generous amount. Your ignition control module stays cooler and lasts longer.