How long is the Detroit One-Box supposed to last?

See post #30. You probably have heard the saying you get what you pay for. There is a reason the cheap ones cost less. They use less of the precious metals (catalyst) that cost so much. Less means they don't last anywhere near as long. The DOC and SCR (C stands for catalyst) are just like a catalytic converter in a car.

 

Another reason they cost less, it's not marked up by a truck dealership.
I haven't compared quality, not sure how to check.
It would be nice if the parts could be replaced inside. Instead of having to replace the whole box.

 

if you can get a heart transplant, you can get a DOC transplant. for less than 18k jfc. *googles local precision welding*

 

I remember reading on here about some shop in Ohio that could replace them I believe. They could open the one box tourch them out and put the new ones. Then weld the them back in plces(the box that hold them) then put the one box back together. Kinda like Cummins they built their in 3 parts so you could replace just the parts that fail.