Im not sure what this turbo is. The guy that has it is a dip**** and can not understand how to messure anything on it. The only thing he said is that it is a 88mm and t4 off a John Deere
might be their 12.5L out of their 9400 + series, but im just guessing that. I should go check out our neighbors tractors, they are newer but may have some interesting turbos