6637 tubing for install - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 13 (permalink) Old 08-07-2013, 11:58 PM Thread Starter
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6637 tubing for install

I just bought my 6637 air filter and outerwear pre filter. I called up my local auto parts stores to try and source a piece of 4inch exhaust tubing. This seems to be a bit harder to find than I thought. Nobody has just 4 inch od exhaust tubing laying around. Everybody has 4 inch id couplers.

Where have you guys found some tubing?

I went to the local NAPA and they said they could order it but the shortest piece they could get is 8 inches and it would cost 20 bucks. I thought that to be excessive so hopefully you guys can give me some direction!
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post #2 of 13 (permalink) Old 08-08-2013, 01:25 AM
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Re: 6637 tubing for install

Do you know anyone with exhaust on their trucks? They come with enough for a cclb so if the configuration is shorter they'll have some left over
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post #3 of 13 (permalink) Old 08-08-2013, 01:27 AM
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Re: 6637 tubing for install

WLK-42247

just google that its a walker part number for 4in piece of pipe with 45* bend

1996 F250 SCLB 4x4 Built E4OD 4.10, napa 6637, 3" dp,3.5" delete pipe, 4" side pipe, TS 6 pos, switched ebpv
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post #4 of 13 (permalink) Old 08-08-2013, 03:36 AM
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Re: 6637 tubing for install

Until you find a short piece of 4" tubing, you can use a 3 1/2" PVC connectir from the hardware store, The ID is a little smaller but it is a work around you can use. (That connector is 4" OD, same as the exhaust tubing)

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post #5 of 13 (permalink) Old 08-11-2013, 06:45 PM
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Re: 6637 tubing for install

I bought a chunk of 4 in tubing at my local NAPA. they sell in foot lengths for around $6.50
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post #6 of 13 (permalink) Old 08-16-2013, 02:20 AM Thread Starter
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Re: 6637 tubing for install

Quote:
Originally Posted by ford_shooter View Post
I bought a chunk of 4 in tubing at my local NAPA. they sell in foot lengths for around $6.50
Checked with the local NAPA and the smallest section they would sell me was 18 inches for 30 bucks. Went down the road to the Tuffy were I take my fire departments vehicles for service and he hooked me up with a 5 inch piece for FREE. Can't beat that deal.

Anyway I got my filter in the mail from Fleetfilter today and did the install. I snapped a couple pics.





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post #7 of 13 (permalink) Old 08-16-2013, 04:22 AM
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Re: 6637 tubing for install

A piece of intercooler piping off a tractor trailer truck will work well also. If you have any junk yards around.

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post #8 of 13 (permalink) Old 08-16-2013, 02:11 PM
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Re: 6637 tubing for install

Some of the big chain dept stores have 4" conduit. Not sure on the price tho. I found the piece I needed for the filter install at the local muffler shop. Got a foot long piece for $5 from the scrap pile
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post #9 of 13 (permalink) Old 02-13-2015, 06:33 AM
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Re: 6637 tubing for install

found it!

Dynomax Performance 41987 - Walker Exhaust Pipe Connectors

http://www.summitracing.com

Just type in 41987 in the search field.



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post #10 of 13 (permalink) Old 02-13-2015, 11:42 PM
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Re: 6637 tubing for install

Look on eBay for 4" intake pipe. I bought a 5" long aluminum intake pipe and it has the ribbed ends like an intercooler pipe. Was only like $14 shipped if I remember right.
I did use the 3.5" pvc for a bit. Used a die grinder and rounded the inlet edge for smoother flow.

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