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 From AT545 to MT643 behind a 5.9 Cummins
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oklahoma-todd
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4 Posts

Posted - 10/13/2015 :  11:42:46 AM  Show Profile  Reply with Quote
My Bus has a 545, I am cooking the thing so I bought a MT643. I have scoured the interweb for HOURS and cannot find a definitive answer.

Without pulling the 545, I have to assume its SAE#2 bellhoushing....

So are the Flywheel and adapter (not bellhousing) different between the 545 and 643?

Is the Flywheel and adapter (for MT643) the same between the 5.9 and 8.3 Cummins?

I have the part #'s for 5.9 to MT643, but i can not find the part numbers fro 5.9 to AT545....

23045240 is the 643 to 5.9 Flywheel
23045241 is the 643 to 5.9 "adapter"

Anyone know anything else for sure??
I can't be the only person to do this...!!!

THANKS, Todd S.

P.S. I know this is my first post. I have been lurking here for a while! This is the first question I havent found the answer to.

Edited by - oklahoma-todd on 10/13/2015 12:07:47 PM

oklahoma-todd
New Member

4 Posts

Posted - 10/13/2015 :  12:44:34 PM  Show Profile  Reply with Quote
Here is the drawing I have for AT545 to "B" cummins


[URL=http://s23.photobucket.com/user/scooter141/media/IMG_5731.jpg.html][/URL]



And here is the drawing I have for MT643 to "B" and "ISB" cummins.


[URL=http://s23.photobucket.com/user/scooter141/media/6EED3557-AF67-4B48-80F2-5FE1F6CA02FE.jpg.html][/URL]
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