Really not tuning related at all. The age old argument of whether the genuine Cummins water pump is the only water pump one should use or if any old water pump is fine.
My old 2005, had about 460,000 miles on it by the time I crashed it and wrote it off, only changed the water pump 3 times for the some 370,000 miles I owned it. Never used a genuine Cummins water pump for replacement and never had any complaints to deliver on not using a genuine Cummins water pump.
Today had the what I?m assuming is the stock original water pump blow out on me on my 2012 at about 164,000 miles. I bought the truck used with 80,000 miles on it winter of 2018. There was an Autozone near by at the time, it was getting late in the day and didn?t feel like running around too long in the truck with a shot water pump so I bought $70 water pump they had there. Let?s see how long this Autozone pump lasts!