Distributor Cap & Rotor for Mercruiser V8 Engines with Thunderbolt Ignition Fits Mercruiser 5.0L, 5.7L and 7.4L Engines Kit Contains: Distributor Cap, Rotor, and Gasket Kit replaces Mercruiser #: 805759Q3 Distributor Cap replaces #: 16457A4 Rotor replaces #: 13524A5 RM300-03085.
eBay