4in down pipe.

[Beans71086]

I have the MBRP one on my truck and it fits fine and has the ball and socket. I dont know i any of the downpipes for the 6.4 dont have them.

Good info, after some more searching I found an MBRP 4in t409 stainless for $187 and free shipping. I feel if its a better quaility steel and it fits just as good.... why not. Not trying to put powerstroker67s product down by any means but Im all about saving where I can.

 

[JonathanN]

Got the DP that came with our Elite EGR Delelte w/wastegate... fit perfect. It is dual-walled is probably alot closer to 3" like the others said.