Exhaust pipe flex cracked

I believe an exhaust leak under the cab is an OOS violation.

I'm surprised the emissions sensors aren't going off like Christmas tree lights.

The old straight exhaust pipe, I would wrap with exhaust tape put a clamp on it. Not sure that would hold very long on flex pipe.

 

TA sold me this clamp until I was able to get the truck into a shop...

 

If your emissions are intact you won’t be getting the correct pressures for everything to be working as it should. Peterbilt has a similar piece and it broke on my 2017. If it regens at all you’ll get a bunch of white smoke coming out from under your cab.

 

Get a new one asap. Start calling dealers along the way. Easy dyi repair. Dealership is probably the place to buy anyways. Sometimes prices can fluctuate a lot between Dealers. Needs repair, might as well fix it and be done. Biggest problems probably going to be finding it in stock. Might have to make a lot of calls and have it shipped to your house. $100 or $800. Might be happy to pay, once if you can find it. I’d consider checking the junkyards. They’re often a good source for otherwise super expensive dealer items. Intake piping comes to mind. They often have a pile of stuff like that to rummage through and match up.

 

Sensors control mechanical stuff. I don’t know much about the emission sensors. I think the biggest issue is excess heat. Wires melt easier on the newer hotter engines even when everything’s correct.