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HEI Ignition Coil For MerCruiser Thunderbolt IV & V - 392-7803A4, 392-805570A2 - Automotive Authority

HEI Ignition Coil For MerCruiser Thunderbolt IV & V - 392-7803A4, 392-805570A2

Automotive Authority

HEI Ignition Coil for MerCruiser

Brand New aftermarket HEI ignition coil for MerCruisers. For MerCruiser Thunderbolt IV & V ignition systems. Please check your part numbers to confirm fitment. 

  • Replaces Mercury part # 392-7803A4, 392-805570A2, 18-5438
  • This ignition coil meets or exceeds OEM specifications
  • Direct replacement

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