Here is a video on how to install a engine Air filter on a 2010-2012 Chevy Equinox & GMC Terrain 2.4 4cylinder & 3.0 V6. Thought this video can assist anyone that has questions on this process, so hope it can be helpful to you!
Here is the part number
AC Delco A3138C
GM # 25899727
I know there is always great debates on using aftermarket filters like K&N, but I have ran those in my past vehicles, so starting with my Nox, I will just continue to use the stock filter. I will change it every 15K since I live in the Desert lol
I got mine off of Amazon for $23.41 and with free shipping since I bought the cabin filter at the same time. Otherwise shipping prob be around $5. Retail price on this filter is $44 but no need to pay that when you have the internet!
From doing research on this forum, it seems the Wix filters have issues sealing correctly because of some do not fit, so beware of them!