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Old 01-06-2021, 02:53 PM   #1
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Brand: Thor Motor Coach
Model: Tuscany 45AT
State: Ohio
Posts: 12
THOR #16882
Tuscany Fuel Filters Cummins, ISl 8.9

Folks:

I neglected to check on the fuel filters that are installed in our 2018 Thor Tuscany MH prior to placing it in storage. I'd like to purchase them before we leave for Fl. as the Speedco we typically stop on the way down did not have the filters in stock any longer. This, after we have stopped at that location for the past 15 years. The mechanic advised me to buy our own and they would install them. Ours is the 450 hp Cummins.
Any help would be appreciated.

Thanks
Ron K.

2018 Thor Tuscany 45AT

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Old 01-06-2021, 03:39 PM   #2
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Brand: Thor Motor Coach
State: Missouri
Posts: 1,822
THOR #6903
Do you have the large or small water separator?

The large version is the one they usually don't carry

Will look up the numbers
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Old 01-06-2021, 03:43 PM   #3
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Brand: Thor Motor Coach
State: Missouri
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THOR #6903
FS19798

This is the large diameter water separator on mine

Some have the small unit
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Old 01-06-2021, 04:05 PM   #4
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Brand: Thor Motor Coach
Model: Tuscany 45AT
State: Ohio
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THOR #16882
Thank you for your reply.
Looking at the FS19798 filter I don't see the clear plastic water separator, on the lower end, that I know mine has.
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Old 01-06-2021, 04:34 PM   #5
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Brand: Thor Motor Coach
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THOR #6903
You have to exchange it or buying again
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Originally Posted by RonK View Post
Thank you for your reply.
Looking at the FS19798 filter I don't see the clear plastic water separator, on the lower end, that I know mine has.
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Old 01-06-2021, 04:37 PM   #6
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Brand: Thor Motor Coach
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THOR #6903
FF63009 is the final or secondary which seems to be common
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Old 01-06-2021, 04:38 PM   #7
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Brand: Thor Motor Coach
State: Missouri
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THOR #6903
I have a spare bowl and water sensor so that I can swap out the filter as a unit
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Originally Posted by RonK View Post
Thank you for your reply.
Looking at the FS19798 filter I don't see the clear plastic water separator, on the lower end, that I know mine has.
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Old 01-06-2021, 04:42 PM   #8
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Brand: Thor Motor Coach
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THOR #6903
ABP N122R50419 is the oem filter number

Some ISL have the smaller version
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Old 01-06-2021, 04:50 PM   #9
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Brand: Thor Motor Coach
State: Missouri
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THOR #6903
Racor Rk 30063 RK30063 Plastic Replacement Bowl Kit With Sensor Kit

Bowl kit complete
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Old 01-06-2021, 04:53 PM   #10
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Brand: Thor Motor Coach
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THOR #6903
RonK, check your old papers for the filter change and then you can determine if you have the large or small water separator

Noticed you had posted on IRV2 as well
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