2nd Gen Non-Engine/Transmission Down pipe to turbo elbow connection

[TRAMPLINEMAN]

This is for a '99 Cummins. I'm wondering if anyone knows the size of the 2 bolts that hold the down pipe flange to the turbo elbow flange!? Thanks in advance!

 

[Diesel Gunner]

When I installed my Pac Brake many years ago, it had to be a 9/16 or a 13mm, if my feeble old mind isn't trickin' me. Or some other common size.



Whatever it is, just climb under the truck, and if you have standards or metrics, and you will be able to do or undo as you please.

 

[MLee]

Your asking BOLT size, right? Not socket----

 

[TRAMPLINEMAN]

Yes, the size of the bolt. Can't really compare to the old ones, they're gone.

 

[MLee]

I lost one of mine and used a manifold to head bolt, it was longer than I needed so I shimmed it. I belive there 10MM as I recall. When done double check that they are still there and tight periodically.

 

[TRAMPLINEMAN]

Thank you.