Distributor cap and rotor for Mercruiser, OMC Cobra and Volvo Penta 4.3 liter V6 sterndrives with the Delco EST electronic ignition. The cap and rotor replaces MerCruiser part numbers 850484T1, 850484T3, 850484T2, 8M0062084. OMC Cobra and Volvo Penta part numbers 3854331 and 3854311