High Performance Custom Marine Inc CMI Gen-X 525EFI, 600SCI & 700SCI Marine Headers:

West Coast Offshore carries all the CMI Gen-X Marine Headers including 525EFI replacement headers, 600SCI replacement headers & 700SCI replacement headers.

More About CMI Gen-X Headers:

Direct factory replacement headers for Mercury HP525 EFI, HP600 SCi, and HP700 SCi engines.

  • Improved water fill provided by downturn collector.
  • Greater horsepower and torque performance due to equalized primaries.
  • Same 316L Stainless Steel used in CMI race header systems.
  • Dual bolt pattern for both standard Mercury platform and GM Pattern.
  • Minimized possibility of engine water ingestion due to patented “Cool Collar” flange.

Works with existing tailpipes.

Displaying 1 - 9 of 9 results

Recommended Products