cummins "53"

d_denver wrote:
I believe the 53 block was only on the Cummins ISB.

That is correct.

I believe the 53 block was only on the Cummins ISB. I doubt the Endeavor has the ISB small block

I have a 1999 code 53 ISB. Had it 14 yrs, no problems (have to admit, was quite concerned when I learned about the potential issue after I'd bought the coach).
Re. what you are looking at, I believe the cracked block issue would have occurred by now. If it passes a pressure test now, I wouldn't worry.

thanks for the response, I am going out this morning to check it out, this motorhome has 89,000 miles on it, i'll see what it looks like ...

Here is an explanation of the issue and years of production-- note, this is the year the ENGINE was built, so coach year could be somewhat later:

http://www.cumminshub.com/cummins-53-block.html

The years for these blocks were from 1998 to 2002, they were cast in Brazil. I had the misfortune of getting stuck with one of these failures in a MH.

Yes, 99-01 I would check the block. Yes, this applies to Cummins B engine ONLY.