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Old 12-05-2021, 11:18 AM   #1
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Fuel Filters, ISB 6.7

I need confirmation on fuel filters for a 2017 ISB 6.7 Cummins. I just got off the phone with FCCC and Cummins Care this morning and came away knowing less than when I called. What I think I need is the FF63054NN fuel filter and FS 1098 fuel filter. I went on ďQuickserveĒ and saw the progression of filters to the ones l put here. MH is in storage now, so canít go crawl under it quickly.
Ami on the right set of filter numbers here before I order them?
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Old 12-05-2021, 11:28 AM   #2
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Those are the ones I have on our 2020 Tiffin 33AL with PowerGlide chassis.
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Old 12-06-2021, 07:47 AM   #3
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Go to the Cummins Parts site, enter your engine serial number and it should give you the correct numbers. Lots of items have been superseded over the years so it can get a little confusing.
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Old 12-07-2021, 01:19 PM   #4
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Quote:
Originally Posted by Caymanedge View Post
Go to the Cummins Parts site, enter your engine serial number and it should give you the correct numbers. Lots of items have been superseded over the years so it can get a little confusing.
Actually, the Cummins Quickserve is where I got the numbers from. The confusion for me was when I actually spoke to customer service people at FCCC and Cummins, I got different info from each one. Also, neither could tell me both filter numbers, and none of the numbers given me were at the current level. So, guess Iíll go and crawl around under my rig and see what the filters call out and cross reference, if necessary.
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Old 12-07-2021, 05:57 PM   #5
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I would trust FCC more than Cummins AFAIK Cummins only supplies engine and FL adds all the ancillary items.

I can confirm the filters that are on my 2013 Newmar VTDP 3433 Cummins ISB w/ FL chassis.
NAPA Water Sep (used w/ plastic bowl) #3813
NAPA Fuel filter #3966

I have some other brand #s but they are unconfirmed as the above are what has been used on my MH.
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Old 12-08-2021, 03:16 PM   #6
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Those are the ones I have on our 2020 Tiffin 33AL with PowerGlide chassis.

That is interesting. I have the same coach as you. Mine is a 2019 but allegedly they are identical. My fuel filter numbers are FS1098 and FF63009.
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Old 12-08-2021, 03:54 PM   #7
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The FF63009 has been replaced with the FF63054.
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Old 12-08-2021, 03:58 PM   #8
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Hereís a flyer on the new filter
Attached Files
File Type: pdf FF63054NN Fuel Filter Flyer.pdf (1.93 MB, 6 views)
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Old 12-08-2021, 04:03 PM   #9
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Hereís a flyer on the new filter


Thanks for the info.
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Old 12-08-2021, 07:24 PM   #10
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Crawled around a bit more and turns out that the fuel water filter is an Alliance R50149. Iím thinking g that this has been superseded by the Fleetguard FS1098. The FF63054NN will work as it replaces the 63009. Sure gets frustrating chasing these all to ground.
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Old 12-09-2021, 06:26 AM   #11
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Crawled around a bit more and turns out that the fuel water filter is an Alliance R50149. Iím thinking g that this has been superseded by the Fleetguard FS1098. The FF63054NN will work as it replaces the 63009. Sure gets frustrating chasing these all to ground.

I agree with your comment on chasing these things to ground. I thought I had it all figured out on the fuel filters until I read dwaugh10's post and realized while I did have it right several months ago, the 63009 is now superseded. I keep OneNote notebook on my phone where I record all of this for future reference. I am wondering how long that Alliance has been on there. Maybe you know and maybe not too long, but without me having any other knowledge I would be suspicious that it's been on a very long time. Good that you're changing them out.
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Old 12-09-2021, 11:43 PM   #12
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Finally got all this sorted out after talking with FCCC, Cummins, and Cummins Care. When Cummins sold the engine to Freightliner, it did not have the filters attached. Freightliner uses Alliance filters, in this case the R50419 (with the bowl). Freightliner could not give me any info on filter numbers other than the fuel water filter. Cummins could only tell me that the Ff63054NN is the current filter, but could not define anything about the fuel water filter. Finally, Cummins Care told me that the Alliance filter could be replaced by the FS1098. Took a week to arrive at a confirmed answer. We just bought this coach in September and it only has about 12K miles on it, so pretty sure these are the original filters. They will get changed out in the spring, when it warms up.
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Old 12-11-2021, 05:51 AM   #13
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Finally got all this sorted out after talking with FCCC, Cummins, and Cummins Care. When Cummins sold the engine to Freightliner, it did not have the filters attached. Freightliner uses Alliance filters, in this case the R50419 (with the bowl). Freightliner could not give me any info on filter numbers other than the fuel water filter. Cummins could only tell me that the Ff63054NN is the current filter, but could not define anything about the fuel water filter. Finally, Cummins Care told me that the Alliance filter could be replaced by the FS1098. Took a week to arrive at a confirmed answer. We just bought this coach in September and it only has about 12K miles on it, so pretty sure these are the original filters. They will get changed out in the spring, when it warms up.



Yes, after I read this thread and dwaugh10 informed me of a filter change on the fuel side, I decided to e-mail fleetguard filtration who then forwarded it to Cummins Care to confirm precisely from the manufacturer what filters I need. Response: "The fuel filter FF6309 supersedes to a FF63054NN. Your fuel water separator stays the same as a FS1098, and the lube filter stays as a LF3970." Just as dwaugh10 indicated. As for the filters on yours likely being the original, it sounds like the prior owner was taking a gamble. The attached quick reference from Cummins shows the mileage and time limit. My time limit is 12 months. Perhaps that is overkill, but I've read some threads on here from people far more knowledgeable than me that the time limit has more to do with the break down of the filter media and not necessarily the filtered particle buildup/differential pressure. Anyway you likely know all of this after all of your research you've been doing. I'll be changing mine out again in February at the 12 month mark. Good luck!


ISB 6.7 Maintenance and Operation Brochure.pdf

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