Mercury - Quicksilver 808483Q1 Distributor Cap Kit Marinized GM V8 Engines Delco HEI Ignition 808483Q1. Overview. There's a certain satisfaction when your V8 lights off clean and even - no hesitation, no stutter, just that deep, steady rumble you can feel through the deck. The Quicksilver 808483Q1 Distributor Cap Kit helps keep that feeling alive. It's built for 1997 and older GM-based MerCruiser engines running Delco HEI ignition systems, giving you the kind of spark reliability that seasoned b