Plastic to Stainless coolant line running under intake

Early 2nd gen 2.7 had a plastic cooling line that ran under the intake, & was prone to failure...No recall that I know of, but that line was switched to a stainless....Does anyone know the year this transition took place?.....

 

Not sure what year but it's easy to see which one you have, it's about a 2-3 hr job to replace it.

 

FYI, I just did mine a week ago. I'm reasonably mechanically inclined but, being the first time I've done this particular job, it took me about 4-5 hours, but I label everything and clean while I go along.

 

Anyone know what year the 2tr-fe got a metal water bypass pipe?

 

It wasn’t a 2010, I replaced my 2010 with a metal one

 

My 2012 2TR-FE has a metal pipe.

 

OK - So it looks like somewhere around 2011.....My 2014 has the stainless....