Something funny is going on here. Just got off the phone after talking to Cummins Cumberland in Louisville, the night shift boys, the ones who have always been so knowledgeable and a better help than the day shift.
Anyway, the lift pump number is 3990105, same as the one I have now.
The technician who answered the phone said that all Cummins parts numbers start with a 3 or a 4. (my best friend at work is a certified Cummins mechanic, and he confirmed this, though it's been 2 years since he worked on them)
5080885AA didn't ring a bell with the Cummins guy in Louisville... maybe it's a model number?
So anybody got the straight scoop on this? Did they drop the ball on this?
Anyway, the lift pump number is 3990105, same as the one I have now.

5080885AA didn't ring a bell with the Cummins guy in Louisville... maybe it's a model number?
So anybody got the straight scoop on this? Did they drop the ball on this?