darkvader

Just got a pf7977 filter and it does not clip into the cap(it does not have a lip, smaller dia at top than oem) Is this correct?
Clark

tryNto

It is the correct filter, Doesn't have to clip to the lid...

darkvader

Thanks. Just a little insecure I guess.
Clark

Polarlys

Used it on my '06 and it clipped on the lid just fine. Don't know why it wouldn't for you. I guess it just makes it easyier to remove.

darkvader

Just the top is to narrow diameter to clip into cap, no lip. Height and length are fine, cap pressure should hold filter down and in place I guess.
Clark

kully560

make sure you did not install it upside down it will not clip in

darkvader

one end is sealed. looks like oem but no lip.
Clark

darkvader

screwed down the cap and seems to have adequate down pressure. going with trynitro(I remember garlits and ed Iskiderian) unless someone is definite no no.
Just do not want to screw up.
Clark

surfram

New Napa Gold 3585XE fuel filters also no longer clip into the lid. No idea why they changed it. Clipping into the lid is only for ease of installation and removal. It has nothing to do with filtration because the filter seals at the bottom of the housing. Just push the new filter down into the housing until you feel it "thunk" and seal at the bottom. Please refrain from turning this into a filter war thread.

Lost Lake

my Baldwin 7977 clipped in.

CoastalDav

The Baldwin clipped into my cap as well.

alboy

I just got a case of the Baldwin s, they do not clip in.

annabelle

Unless they changed them from an 04 to 06.....mine clip in. Same as Fleetguard.

surfram

The design of the filters changed recently. Newly manufactured filters no longer clip in but have the same part number PF7977 for all 2003-2007 3rd gen 5.9 trucks.

thebestofindica

Works for me. One end always had larger diameter. One side would clip in, other would not.