2005 Itasca Horizon Air Filter Help Needed

[Bigtoe633]

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.

[Wmlunt]

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

[Bigtoe633]

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.

[Wmlunt]

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

[cbeierl]

Originally Posted by Bigtoe633

We recently purchased a 2005 Itasca Horizon 36RD class A motor home with CAT 350hp C-7 engine. ....

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.

[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

[cbeierl]

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

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.

[cbeierl]

Here's a BOM for the intake side as well.

[cbeierl]

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.

[Ray,IN]

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.

[Gary Harter]

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.

[Don G]

My 05 Journey with cat C7 350hp takes a wix 46748 air filter.

[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.

[Ray,IN]

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.

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.