im under the impression they are all the same as well, i had a 03 common rail and the water pump went out, and the parts store i was close to only had a water pump for a 6.7, i installed it in the parking lot, and it has worked just fine ever since. but these i have now look the same as the 6.7 one, and the vp truck i just looked at the water pump, also very similiar, just has blow by all over it LOLLOL:hehe: