03 Cummins 5.9?

But if your going to look at a 2003 motorhome with a Cummins ISB 5.9, it could very well be a 2002, or even possiblily a 2001 Cummins engine. So be careful. If you can get the engine #, you can call Cummins Care (800-343-7357) and they should be able to tell you.
Here's some more info: Cummins ISB 53 Block

And Brian, would you please PM or email me!!!
Pat

I wonder how many thousands were dumped into that engine over that problem. Unreal.

wolfe10 wrote:
It was "53" castings and that was for 1998- 2001.

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

Oops thanks, I never was good at math :W

It was "53" castings and that was for 1998- 2001.

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

That was the infamous #52 block and it was long gone by the 03 model year.
The Common Rail Cummins eng of 03 is arguably one of the best diesel engines ever built. Very reliable, fuel efficient and devoid of crummy emissions junk like EGR valves.