Engine/Transmission (1994 - 1998) need part number

[birddog]

Looking for the part number for the oring on secondary fuel filter,(the one lower on the block with the screen it). It appears to be a standard flat cut oring, but cummins,dodge and multiple other places can't seem to help so I figured this would be the place?

 

[JDKammin]

Are you talking the O-ring on the bowl of your fuel heater?

 

[Joe G.]

This is a FleetGuard part number: 3907766-S. Cummins should have that.