napa 3512 fuel filter o-ring

I thought these came with the correct o-ring. Mine would not fit into the grove and I had to stretch it pretty good then came the leaks. Anyone else have this problem?

Is this the correct o-rinng 15211? from WIKI

napa 3540 will have the correct o-ring. Same filter.

I use the NAPA 5070 for the fuel cans. Not sure about the 15211.

DieselBob said:

I use the NAPA 5070 for the fuel cans. Not sure about the 15211.

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for secondaries? isn't that the same for oil?

3540 is not the same filter as the 3512

3512 is a 10 micron filter............used in the secondary filter housing

3540 is a 6 micron filter...........used in the final filter housing

While both are physically the same size and can go in either housing it is advised to use them in the correct way.............as the filter set up was designed to work.

As for the "O" ring I have to look for where my spare one is and get you the part # the ones that come with the filters were not the right ones...........however in the Wix boxes they give you 2 different gaskets("O" rings) and I haven't tried one yet but another member said that the correct one is in there.

By the way just add a 3 in front of the two previous numbers and that is the Wix number.

dstang97 said:

for secondaries? isn't that the same for oil?

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IIRC it is the NAPA 5119 for the oil filter cans. You are correct that the gasket that comes with the 3512 is wrong.

The secondary/final gasket number is Napa #5070
The primary gasket number is Napa #5131
The oil gasket is Napa # 5119 it is a fiber gasket and is correct.

These are all good numbers, I buy them 100 at a time.

john-today i realized why your kits are so great

jatonka said:

The secondary/final gasket number is Napa #5070
The primary gasket number is Napa #5131
The oil gasket is Napa # 5119 it is a fiber gasket and is correct.

These are all good numbers, I buy them 100 at a time.

Click to expand...

I just ordered some filters online from FleetFilter, I thought there were going to be WIX but they were Napa Gold... For the price I can't complain.

Anyhow, I'm not sure if the supplied gaskets will work (just got my deuce so I have yet to change the oil & fuel filters)... I looked up those parts online and the #5131 does not show up in the search results??? If I go to the store or call will I (hopefully) have better luck?

I think eventually I'll probably get me some of the spin-on adapters once I can afford them.

FleetFilter states that the NAPA Gold are built by WIX and are the same. the o-rings that came with the filters fit in the groove that the can rests in. I had trouble putting them in as they are smaller and have to be stretched nicely to slide in. I found that soaking them in fuel for a few minutes helps make them more pliable (the ~3.5" dia 1/8" thick o-ring) the little round ones i fount fit on the top bolt but i had a real soft o-ring that i kept on to make a better seal

Ah okay, thanks for the info!