Distributor Cap & Rotor for Mercruiser 4.3L V6 Thunderbolt Ignition Kit contains: Distributor Cap, Rotor, Screws and Gasket Kit replaces Mercruiser #: 815407Q5 Distributor Cap replaces #: 13753A2, 815407A2. Rotor replaces #: 13524A6 RM300-03084.
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