Originally Posted by two bonnies
His UIM prolly won't need replaced since it is the newer one.
It is great of you to help out "hands on."
Because you will be removing it anyway, take a few minutes to probe the EGR bore of that UIM with a sharp point like a dental pick or an upholstery needle to make sure the plastic has not begun to soften. Doesn't matter if it is newer or not, unless it has a metal sleeve for a heat shield in the EGR bore. Unshielded EGR bores can look deceivingly good because they typically become coated with a shiny black layer of petroleum coke that mimics new plastic, but the coke will not stand up under a probe test if the plastic underneath has suffered heat damage. It would be a shame to have removed and replaced a UIM that later failed.