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2006 fuel filter - which size or either?

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Old 06-14-2016, 08:16 PM
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Default 2006 fuel filter - which size or either?

Hey, quick question...

for my 2006 KR F150, I bought a new fuel filter today, Motorcraft FG-986-B as specified in my owners manual. Got under the truck to remove the old one (after releasing pressure) and found that filter number FG-1083 is currently installed. I figured maybe it was just a superceded number, but the inlet and outlet size is different than the filter I bought (3/8" vs. 5/16").

The truck was running fine with the current filter, no leaks, etc., so I am wondering if I should replace with the same even though it is not the part specified in my manual. Or will either work? The differing inlet/outlet size has me a bit spooked.

thanks for your help.
Old 06-15-2016, 07:31 AM
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You need to get the matching size to what came off. I'm not 100% sure why there are different line sizes, but don't try to make it fit. I ran into that problem a little while ago actually. Parts store gave me the wrong diameter. Left me kind of confused as well
Old 06-15-2016, 07:51 AM
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06 had a split in fuel filters based on production date.

Up to 12/05 they used 5/16. After they upped to 3/8.
Old 06-15-2016, 08:49 AM
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Cool info rivera, I was thinking it had something to do with flex fuel variants.
Old 06-15-2016, 12:04 PM
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It was for the FLEX Fuel option.
Old 06-15-2016, 12:06 PM
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So maybe I was right.....
Old 06-16-2016, 06:44 AM
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Originally Posted by SCORGE
So maybe I was right.....
sure are.. there is 2 sizes.. this is why some people have problems when removing their filter. they try to use the wrong size removal tool.
Old 07-03-2016, 05:51 PM
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Changed my fuel filter today. As you can see by the black fuel that leaked out it was in desperate need. Here's some info to help:

I have a 5.4L 2006 produced in 2006 according to the VIN. My truck used the filter beginning with 9. Other people have posted otherwise, so my best recommendation is to just take it out and see what you have if you have a 2006. If you change the filter when the engine is cold and just open the tank, that is all that is needed to de-pressurize the system. Also, if you break the clip that connects to the end towards the gas tank it isn't the end of the world. I bought my truck used and it was already broken. A zip tie was holding it sealed and after the change a zip tie still works. Hope this info helps. Go change that thing if you've been putting it off. It's easy pizzy.
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Old 07-03-2016, 06:30 PM
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Damn that dirty! Mine looked great after 3 yrs 20000 miles which was surprising
Old 07-03-2016, 06:44 PM
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Makes sense.. recommended intervalwith regular driving is 3 years.


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