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04-05-2024, 09:17 AM
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#1
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Winnebago Watcher
Join Date: Apr 2024
Posts: 3
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2005 Itasca Horizon Air Filter Help Needed
We recently purchased a 2005 Itasca Horizon 36RD class A motor home with CAT 350hp C-7 engine. A previous owner had modified air intake with K&N filter into rear drivers side passage. No one had inspected the filter for some time due to issue of reaching it. I wish to put the original filter housing in however I am on my 4th filter and none fit. This seems to be a one off filter location as it is vertical mount on drivers rear side, 11" diameter and a 5" outlet in the side. The intake is above the trans side cooler and that port is 6.5" OD but not sure if filter goes around that port or into it. I have spent hours going through filter catalogs and I'm about to just build my own using a cartridge filter. Any help is highly appreciated.
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04-05-2024, 11:22 AM
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#2
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Winnebago Owner
Join Date: Mar 2024
Posts: 146
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The filter would go on the outside with a hose clamp around the filter.
It may not be a K&N filter set up, maybe CAI induction system.
I would call both suppliers with your dims, they should be able to provide a filter to fit!
Bill
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04-05-2024, 11:25 AM
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#3
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Winnebago Watcher
Join Date: Apr 2024
Posts: 3
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Thanks, I definitely do not want the K&N setup. I will look up CAI Induction system and see if we can come up with the right filter.
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04-05-2024, 01:22 PM
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#4
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Winnebago Owner
Join Date: Mar 2024
Posts: 146
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It looks like you would need a conical or at least cylindrical air filter with that intake port. Cold Air Inductions is another similar filter to K&N.
Are you against the cone filter shape or just that company brand?
I have the CAI brand on my Camaro for 12 years with no issues.
Bill
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04-05-2024, 02:01 PM
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#5
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Winnebago Master
Join Date: Aug 2005
Location: Nashua, NH
Posts: 1,833
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Quote:
Originally Posted by Bigtoe633
We recently purchased a 2005 Itasca Horizon 36RD class A motor home with CAT 350hp C-7 engine. ....
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The OEM filter for your coach should be the Parker|Racor ECO-BC #094973007 (see attached Racor brochure). I found the best prices in the past at my local Freightliner dealer.
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Chris Beierl
2005 Winnebago Vectra 36RD
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04-05-2024, 02:09 PM
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#6
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Winnebago Watcher
Join Date: Apr 2024
Posts: 3
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Chris, you have no idea what this means to me, thank you very much. I see you have the Vectra which is the same unit. You must have a reducer boot on the outlet to go from the 7" down to 5"? I don't know how far the previous customer took the modification so I may have to go further than just the filter.
Andy
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04-05-2024, 03:49 PM
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#7
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Winnebago Master
Join Date: Aug 2005
Location: Nashua, NH
Posts: 1,833
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Quote:
Originally Posted by Bigtoe633
Chris, you have no idea what this means to me, thank you very much. I see you have the Vectra which is the same unit. You must have a reducer boot on the outlet to go from the 7" down to 5"? I don't know how far the previous customer took the modification so I may have to go further than just the filter.
Andy
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Here's a BOM Parts List from the DTNAPortal (formerly AccessFreightliner) for my coach that ought to match yours as well--hopefully it's helpful.
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Chris Beierl
2005 Winnebago Vectra 36RD
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04-05-2024, 03:53 PM
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#8
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Winnebago Master
Join Date: Aug 2005
Location: Nashua, NH
Posts: 1,833
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Here's a BOM for the intake side as well.
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Chris Beierl
2005 Winnebago Vectra 36RD
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04-05-2024, 04:08 PM
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#9
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Winnebago Master
Join Date: Aug 2005
Location: Nashua, NH
Posts: 1,833
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Btw, given the last 6 characters of your VIN any Freightliner parts department ought to be able to access the same info for your specific coach.
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Chris Beierl
2005 Winnebago Vectra 36RD
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04-05-2024, 09:19 PM
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#10
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Winnebago Master
Join Date: Aug 2001
Location: North America somewhere
Posts: 2,340
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You are wise to be scrapping the K&N air filter. They performed the worst of all the air filters tested on a diesel engine.
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2000 Winnebago Ultimate Freedom USQ40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA 1SG, retired;PPA,Good Sam Life member,FMCA. "We the people are the rightful masters of both the Congress and the Courts - not to overthrow the Constitution but to overthrow men who pervert the Constitution." Abraham Lincoln
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04-10-2024, 05:18 PM
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#11
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Winnebago Watcher
Join Date: Sep 2018
Posts: 3
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The air filter is a Baldwin PA3493. I just ordered mine from Amazon. The elbows and clamps are listed on the Winnebago parts manual which you can find online.
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04-11-2024, 10:45 AM
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#12
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Winnebago Owner
Join Date: Dec 2006
Location: New Hampshire
Posts: 83
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My 05 Journey with cat C7 350hp takes a wix 46748 air filter.
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04-11-2024, 07:56 PM
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#13
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Winnie-Wise
Join Date: Mar 2011
Location: Fairfield, CA
Posts: 263
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Ive been using the Racor also since we bought our 04 Joureny39K, CAT 330hp in2010. I went to the Freightliner roving"Camp Freightliner" class offered back then and it was probably the best thing I did right away as this is our first diesel. I recall, Mike, the presenter, said to replace that air filter every 2 years whether you think it needs it or not. He said that one does not want the filter to "dust" the engine because the engine will be toast. I get mine from Sacramento FL every other December and replace it. They aren't that expensive and I have some peach of mind.
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Barry & Sue Miller("extended" RVer's, 6 mos + per/year) combined trips.
04 Journey 39K, C-7, 330 hp, towing:19 GMC Canyon 4WD or 2013 Ford Edge AWD, Aero 5050XL, ReadyBrake.
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04-15-2024, 06:04 PM
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#14
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Winnebago Master
Join Date: Aug 2001
Location: North America somewhere
Posts: 2,340
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Quote:
Originally Posted by doorguy
Ive been using the Racor also since we bought our 04 Joureny39K, CAT 330hp in2010. I went to the Freightliner roving"Camp Freightliner" class offered back then and it was probably the best thing I did right away as this is our first diesel. I recall, Mike, the presenter, said to replace that air filter every 2 years whether you think it needs it or not. He said that one does not want the filter to "dust" the engine because the engine will be toast. I get mine from Sacramento FL every other December and replace it. They aren't that expensive and I have some peach of mind.
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Yet Cummins says not to disturb the intake air filter unless the filter minder indicates, otherwise every time you remove a clamp you risk creating an unfiltered air leak which will dust the engine. When a clamp it replaced, it must be in the exact same position on the used rubber boot, again to prevent creating an air leak.
If you have a doubt, call Cummins customer service.
__________________
2000 Winnebago Ultimate Freedom USQ40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA 1SG, retired;PPA,Good Sam Life member,FMCA. "We the people are the rightful masters of both the Congress and the Courts - not to overthrow the Constitution but to overthrow men who pervert the Constitution." Abraham Lincoln
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