ISX15 CM2250 fuel pump timeframe?

[Rawze]

If you have the older 3-piston pump,..you will need to upgrade it. that will cost you about $3000 roughly in parts alone to replace and upgrade.

If you have the newer pump, I think its about $800 in parts to replace the guts properly, maybe ask Mr. Hag, he will know better.

The recommendation on the forum here is to replace the guts in the fuel pump for the 2250 and 2350 engines no matter what guts they have, ceramic or otherwise, at every 400k miles intervals. Very few make it past 600k miles, so if yours is still going strong at that age you mentioned,.. you are on borrowed time.