don't know if i matters but it's not to warm the air, it allows the throttle body and mechanisms to be warmed to keep the plate, cables, etc freemly operating and not gummed up in cold climates.Allows the intake air to be warmed.
This is the interesting part about the OE part. If you pull the line off the car, it will be shaped like an "S" more or less. The new part will be shaped like an "L." I went back and forth at the dealer because I thought they kept giving me the wrong part. We checked multiple years and models and they're almost all the same. You need to just bend the hose for the second 90 degree bend. It would be easier and cheaper to just get some bulk hose. The sad part was none of the parts guys had ever heard of anyone replacing them; but the dealership will try and upsell radiator hoses when they're old.if they have tight bends in them they are best to get from the dealer. you can use regular hose just fine, just get a piece much longer as you'll need the length to approximate the bends without kinking.