I just did a fuel purge with seafoam and changed the fuel filters after.

I need to know the oring part number or size for the fuel filter thru bolt???

I am getting fuel leaking out the top big bolt head...

If you guys know it helps as I won't have to pull the filter and bolt at NAPA or the truck shop in town..

Thanks, Darryl

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77 300D- new to me, lots of "issues" to deal with. But a nice unit.
Diesel man- 84 Toyota Diesel cruiser