Join Date: Mar 2014
Location: Keyser, WV.
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It's a charcoal filter used in conjunction with gas engines. Gasoline expands and contracts much more than diesel. Gasoline fumes are explosive, so that filter takes care of the fumes when the gasoline expands as it warms up. (ie. when you fill it up at the pump where the fuel is ~55 degrees and its 80+ degrees outside)
If you're installing a Diesel, toss it.
My neighbor did a Cummins swap on his Ford. It ended up being very expensive and fraught with problems. I told him that he needed to put anti-rejection drugs in the diesel fuel.
2017 F350 CCSB King Ranch Ultimate 6.7
2002 F250 ECLB, XLT, 7.3 PSD, 4X4, Auto, TW 6pos. Tuner, 4" SS Exhaust, Britebox, EZ Down tailgate assist, Rear Air Bags, 6.0 trans cooler, Wicked Wheel 2, Corey's HPX, Dieselsite Water pump w/built-in filter, 203 degree thermostat, Max A/C assist, Oil drain valve, Non EBV pedestal & Flange, S.S. bellowed up pipes, Dieselsite Lifetime Rad. hoses & Intercooler hoses, New oil cooler