I see it mentioned all over the forum but I'm unsure as to what you are talking about. Forgive my ignorance.
I.C.-Integrated circuit, Internal Combustion, Intra Cranial, Instant Coffee, Indica cannibis etc.....

 

All good guesses, but no cigar.
InterCooler Pump.
It circulates the engine cooling fluid through the supercharger intercooler on SRT6's.

Seems the supercharger heats the intake air to 6.735 gazillion degrees as it compresses it, so it needs to be cooled a bit before it is sucked into the cylinders.

 

Using the Google custom Search at the top of the page and typing in 'IC pump" I got the following 3,100+ answers, take your pick.