I'm about to drop the fuel tank to put in a lift pump and I'd like to replace what I understand are plastic fuel lines. I'm a little unclear on what is exactly needed. From one post I saw a "Napa Fuel Line Repair Kit" but when I went to Napa that info was not specific enough to sell me anything.

Fittings on metal fuel line are female. I think I need one male fitting to 3/8" fuel line and one male fitting to 5/16" fuel line, some hose and some clamps.

Is this correct?

How do I spec the right male fittings?

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05 Liberty CRD, Airtex Lift Pump,ProVent, AMM, Racor 245R, ORM, Fujimoto,16x8 Moab Rims, 235/70R16 Goodyear Wrangler Silent Armor

The Dodge lift pump is direct fit to Jeep supply and return lines - if using external pump and eliminating plastic lines, just replace the supply line only with 3/8" rubber hose and clamps - the return line is ok as-is

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'05 CRD Limited
Pricol EGT, Boost
GDE Hot '11; EDGE Trail switched
SEGR; Provent; Magnaflow;
Suncoast T\C, Transgo Tow'n'Go switch;
Cummins LP module, Fleetguard filter, Filterminder
2.5" Daystar f, OME r; Ranchos; K80767's, Al's lifted uppers
Rubicons, 2.55 Goodyears
Four in a row really makes it go

I am installing the Dodge lift pump. Notwithstanding the direct fit, I was under the impression that it would be good to replace both, what I understood to be, plastic lines. No?

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05 Liberty CRD, Airtex Lift Pump,ProVent, AMM, Racor 245R, ORM, Fujimoto,16x8 Moab Rims, 235/70R16 Goodyear Wrangler Silent Armor

Replace the lines only when improving the oem setup with the CP3 drawing from the fuel tank, or to facilitate installing an external lp - the oem Jeep lines exactly fit the Dodge lift pump

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'05 CRD Limited
Pricol EGT, Boost
GDE Hot '11; EDGE Trail switched
SEGR; Provent; Magnaflow;
Suncoast T\C, Transgo Tow'n'Go switch;
Cummins LP module, Fleetguard filter, Filterminder
2.5" Daystar f, OME r; Ranchos; K80767's, Al's lifted uppers
Rubicons, 2.55 Goodyears
Four in a row really makes it go

I like the stock quick disconnect although I hear they may leak over time.
Gmctd is the authority on lift pump changes.
Have you gone to the CRD tech and done your homework and read up on this?

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'06 Jeep Liberty Sport CRD with: GDE Hot Flash and Tranny Flash, ehm, Cummins fuel pump, 3" Magnaflow muff, Moog K3199's, Skids, 225-75-16 10 ply, OME springs, Euro T/C, Shift kit, Trans cooler w/thermal bypass, Bigboy bkt, Samco CAC, Brake controller, Trans temp gauge, Al's Upper Arms

I'd agree with gmctd on this one - fuel is going to be pressurized as soon as it leaves the tank with an in-tank pump. The big worry with the quick disconnects was air leaking in when sucking fuel thru under a vacuum.

Wouldn't hurt though to put a little oil or silicone dielectric grease on the connections when connecting them back - help keep the o-rings in good shape.

But if you really want to get rid of the plastic lines and go with rubber hose, then it'd be 3/8" ID hose for the supply and 5/16" ID for the return lines. NAPA does have high-grade diesel rated fuel line - not the cheap gasser stuff on the hose rack, you'll have to ask for it.

Plastic fuel lines have the female part, metal lines have the male half.

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Mitchell Oates
'87 MB 300D Diamond Blue Metallic
'87 MB 300D - R.I.P. 12/08
'05 Sport CRD Stone White
Provent CCV Filter/AT2525 Muffler
Stanadyne 30 u/Cat 2 u Fuel Filters
Fumoto Drain/Fleetguard LF3487 Oil filter
V6 Airbox/Amsoil EAA Air Filter
Suncoast TC/Shift Kit/Aux Cooler
Kennedy Lift Pump/Return Fuel Cooler