Where is the IAC on my car

Here's what it looks like. Appears to be held on with one bolt, three hoses, and an electrical connector. Having the new one in hand first will verify you found the right part on the engine. It will be on the side of the throttle body. There's an almost identical actuator with only two hose connections instead of three. Both are listed for your engine, but only the one in this photo matches the number you listed.

I don't know how you determined it is defective but be aware engine sensors and actuators are monitored by the Engine Computer which can detect problems and set related diagnostic fault codes in memory. While it's true the sensor or actuator is indeed the problem at least half of the time, those codes only mean that's the circuit or system that needs further diagnosis. There could be a wiring problem, corroded connector pin, cracked rubber hose, the air passages could be blocked with carbon, etc. Many people waste money on a sensor then find out it didn't solve the problem. Mechanics perform a number of tests first to rule out most other possibilities before they spend money on a part they can't return.