Mercury - 808483K2 Distributor Cap and Rotor Kit GM Marinized V8 Engines Delco HEI Ignition 808483K2. Overview. When you turn the key on a well-tuned MerCruiser, you can feel it - that instant spark, that steady rumble that lets you know the ignition system is doing its job. The Mercury 808483K2 Distributor Cap and Rotor Kit keeps that spark strong and reliable, delivering the consistency your V8 depends on every time you head out on the water.. Designed specifically for marinized GM V8 engines