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About IAC Survival Kit

The Marine Design Corporation IAC Survival Kit is designed specifically for  Mercury Racing 600SCi, 662SCi, 700SCi, 496MAG and 496MAG HO engines.  Our kit eliminates  costly PCM damage that can occur when an IAC fails, which can be a common occurrence.   The kit was developed for twin engine applications and includes two plug-and-play IAC harnesses that are fused to prevent a direct short to the PCM.  Also  included are two Tier 1 OEM IAC units with gaskets, spare fuses and a canvas storage pouch.  Replacement IACs and fuses are also available. 

The IAC Harnesses only kit will fit the above engines as well as the 496MAG, 496MAG HO, 525EFI, 850SCi, 1075/1200SCi

IAC without bolts


  • IAC Survival Kit - $299.99

  • IAC Harnesses (2 Per Kit) - $59.99

About Replacement IACs

Our Replacement IACs are Tier 1 OEM and MADE IN THE USA.



Fits 1075SCi, 1200SCi & 1025SCi,  Direct replacement for Mercury Racing #8M0050118.  (2) Required per engine.  MADE IN THE USA

  • $219.99 each


Fits Mercury 496MAG / MAG HO, 600SCi, 662SCi, and 700SCi engines. Direct replacement for Mercury Racing #8M0181068 or 862998.  MADE IN THE USA

  • $199.99 each

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